ANTENNA FEEDS NETWORKS 归档 - DOLPH MICROWAVE https://dolphmicrowave.com/product-category/antenna-feeds-networks/ Precision Waveguide Components - Station Antennas Mon, 31 Aug 2026 03:03:45 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.4 https://dolphmicrowave.com/wp-content/uploads/2024/02/cropped-icon-1-32x32.png ANTENNA FEEDS NETWORKS 归档 - DOLPH MICROWAVE https://dolphmicrowave.com/product-category/antenna-feeds-networks/ 32 32 WR75 Waveguide Bandpass Filter https://dolphmicrowave.com/product/wr75-waveguide-bandpass-filter-bpf/ Wed, 13 Aug 2025 06:12:30 +0000 https://dolphmicrowave.com/?post_type=product&p=3127 WR75 waveguide bandpass filters configured from the required passband, rejection bands, insertion loss, return loss, power, flange and mechanical envelope. Send the filter mask for engineering review.

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Dolph Microwave – Waveguide filtering

Define the filter mask before confirming the WR75 build.

Dolph Microwave supplies WR75 waveguide bandpass filter configurations. Passband, rejection, insertion loss, return loss, power handling and mechanical dimensions are project-specific until confirmed by the current datasheet or drawing.

Send the Filter Mask

Waveguide
WR75 interface
Response
Project-defined passband
Rejection
Specify stopband mask
Release
Datasheet or drawing
Configuration inputs

Send the details that control the final configuration

01

Passband

Lower and upper passband edges plus allowed ripple.

02

Rejection bands

Stopband ranges and required attenuation at each range.

03

Loss and match

Maximum insertion loss and return-loss/VSWR requirement.

04

Power and mechanics

CW/peak conditions, flange, envelope and mounting limits.

Do not release a filter from a center frequency alone.

The passband, transition regions, stopband rejection, power and physical envelope must be reviewed together. Attach a frequency mask or existing drawing when possible.

Request Configuration Review

Engineering handoff

A complete filter mask shortens the engineering review.

Mark the passband, rejection bands and any points with special attenuation limits. Include the source/load match, power and flange requirements in the same request.

RFQ checklist

  • Passband edges and ripple
  • Stopband/rejection mask
  • Insertion loss and return loss/VSWR
  • CW/peak power, flange and dimensions
Related RF path

Continue with the matching component family

Waveguide Transitions

Align the filter with a different waveguide interface.

Waveguide Switches

Route the filtered RF path between operating states.

Double-Ridged Waveguide Straights

Continue the waveguide run with drawing-controlled sections.

Ready for a model check?

Send the operating conditions and interface requirements. We will return the next technical step.

Start an RFQ

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]]> Microwave Feedhorn https://dolphmicrowave.com/product/microwave-feedhorn/ Mon, 29 Jan 2024 07:30:56 +0000 https://beizhifeng.t.lxi.cn/?post_type=product&p=213 Microwave feedhorns are specialized antennas designed for focusing and directing microwave signals into or out of transmitting equipment. They play a crucial role in satellite communication, radio telescopes, and radar systems by ensuring efficient signal collection and transmission, optimizing system performance across various microwave frequencies.

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Microwave Feedhorn Overview

Precision Feed Solutions for Reflector Antenna and Microwave Systems

Introducing the Dolph Microwave Feedhorn, a cutting-edge solution designed for the precise focusing and directing of microwave signals. Engineered with meticulous attention to detail, this feedhorn covers a wide range of frequency bands including C, X, Ku, and Ka, ensuring versatility across numerous microwave communication applications. Constructed from high-quality aluminum or copper, the Dolph Microwave Feedhorn is synonymous with durability and high performance. Available in both standard and customized configurations, it meets the diverse needs of modern satellite communication, radar systems, and radio telescopes.

Frequency BandsC, X, Ku and Ka
PolarizationLinear / Circular, Dual or Co-polarization
Published VSWR1.2:1
ConstructionAluminum or Copper

Performance and Integration

Key Features

The feedhorn configuration should be matched to the operating band, reflector geometry, polarization requirement, waveguide interface and target radiation performance of the complete antenna system.

  1. Wide Frequency Coverage: Supports C, X, Ku, and Ka bands, catering to a broad spectrum of microwave communication needs.
  2. Advanced Polarization Options: Offers Linear/Circular, Dual, or Co-polarization, enhancing signal clarity and reducing interference.
  3. Exceptional VSWR: Boasts a Voltage Standing Wave Ratio (VSWR) of 1.2:1, indicating minimal signal reflection and maximum transmission efficiency.
  4. Premium Material Construction: Precision machined from Aluminum (Al) or Copper (Cu), ensuring robustness and longevity.
  5. High Performance: Designed for superior signal focusing and direction, optimizing the efficiency of microwave transmission systems.
  6. Customization Availability: Provides options for both standard and tailored designs to perfectly fit specific system requirements.
  7. Ease of Integration: Engineered to seamlessly integrate with existing microwave transmission equipment, simplifying setup and installation.
System Function

How a Feedhorn Supports Antenna Performance

A feedhorn forms the RF transition between a waveguide or feed network and free space. In reflector antenna assemblies, its geometry and position influence how energy illuminates the reflector, how efficiently the aperture is used and how unwanted spillover is controlled.

Transmit Operation

The feedhorn converts guided microwave energy into a controlled radiated field directed toward the reflector or target coverage region.

  • Supports controlled reflector illumination.
  • Provides the required polarization at the antenna feed point.
  • Connects to the selected waveguide or feed-network interface.

Receive Operation

The feedhorn collects microwave energy from the reflector and couples it into the receiving waveguide chain with the required impedance and polarization characteristics.

  • Supports efficient signal collection.
  • Helps control cross-polarization and spillover performance.
  • Integrates with OMT, polarizer, filter or receiver assemblies as required.

01

Define the Band

State the exact transmit and receive frequency ranges rather than only the general band designation.

02

Match the Reflector

Provide reflector type, focal ratio, feed position and required illumination or edge-taper target.

03

Confirm the Interface

Specify waveguide size, flange type, polarization orientation and the available mechanical envelope.

Typical Uses

Application Areas

  • Satellite Communication: Vital for transmitting and receiving signals in satellite communication systems, ensuring global connectivity.
  • Radar Systems: Enhances radar signal direction and focus, crucial for accurate detection and tracking in defense and weather forecasting.
  • Radio Telescopes: Plays a key role in focusing signals for radio astronomy, enabling the study of celestial phenomena.
  • Wireless Communication: Improves signal direction and focus in wireless communication networks, enhancing data transmission reliability.
  • Broadcasting: Essential for focusing signals in broadcasting systems, ensuring clear transmission of audio and video content.
Published Product Data

Technical Specifications

To provide a clearer understanding of the Dolph Microwave Feedhorn’s capabilities, here is a brief overview of its technical specifications:

Specification Details
Frequency Bands C, X, Ku, Ka
Polarization Linear/Circular, Dual, Co-polarization
VSWR 1.2:1
Material Aluminum (Al), Copper (Cu)

This table underscores the precision engineering and performance capabilities of the Dolph Microwave Feedhorn, highlighting its adaptability to various system requirements.

Specification note: Published catalog examples use different frequency ranges, reflector types, f/D values, horn diameters and interfaces. The final VSWR, radiation pattern, cross-polarization, material, flange and dimensions should be confirmed for the selected model and approved drawing.
Catalog Reference

Published Feedhorn Configuration Examples

The following rows consolidate representative configurations shown in the downloadable Dolph Microwave Feedhorn catalog. They are useful for preliminary comparison and do not replace a model-specific quotation or approved technical drawing.

Band Published Frequency Range VSWR f/D Taper Half Illumination Angle Cross Pol. Horn Diameter Interface Antenna Type
S 2.025–2.12 / 2.2–2.4 GHz 1.3 0.33–0.45 5 dB 60° 25 dB 210 mm TBD Offset Antenna
C 3.4–4.2 GHz 1.3 0.33–0.45 5 dB 60° 25 dB 200 mm TBD Prime Focus
C 3.7–4.2 GHz 1.3 0.32–0.425 5 dB 60° 25 dB 200 mm TBD Prime Focus
C 3.4–6.725 GHz 1.2 0.575 8 dB 25° 25 dB 185 mm Φ19 mm Offset Antenna
Ku 10.7–12.75 GHz 1.2 0.33–0.45 8 dB 25° 25 dB 185 mm WR75 / C120 Prime Focus
Ku 10.7–12.75 GHz 1.2 0.64 8 dB 27.5° 25 dB 95 mm WR75 / C120 Offset Antenna
C & Ku 3.4–4.2 / 10.7–12.75 GHz 1.35 0.35 11–12 dB 30° 30 dB 364 mm TBD Cassegrain
C & Ku 3.625–4.2 / 10.7–12.75 GHz 1.4 0.35 11–12 dB 25° 30 dB 333 mm TBD Cassegrain
Ka 17.7–21.2 / 27.5–31.0 GHz 1.35 0.35 11–12 dB 30° 30 dB 50 mm TBD Cassegrain
Configuration Review

Polarization, Reflector and Interface Options

A useful feedhorn specification must define the complete electromagnetic and mechanical interface. Band name alone is not enough to select a production configuration.

Polarization

State linear H/V, circular polarization sense, dual-polarized or co-polarized operation, together with the required port arrangement and isolation or cross-polarization target.

Reflector Geometry

Identify prime-focus, offset or Cassegrain architecture and provide focal length, reflector diameter, f/D ratio, feed location and mechanical clearance.

Waveguide and Flange

Provide the waveguide size and required cover, grooved, choke, circular or project-specific flange. Confirm whether an IEC, EIA or customer drawing controls the interface.

Specification-Based Quotation

Information to Include in a Feedhorn RFQ

Providing complete system inputs reduces avoidable redesign and makes it possible to review electrical performance and mechanical integration together.

Request Technical Review

  • Frequency PlanExact transmit and receive ranges, bandwidth and any guard-band requirements.
  • PolarizationLinear or circular mode, orientation or sense, number of ports and isolation target.
  • Reflector DataReflector type, diameter, focal length, f/D and required illumination or edge taper.
  • RF PerformanceVSWR, return loss, cross-polarization, gain or pattern requirements and test method.
  • Mechanical InterfaceWaveguide, flange, mounting pattern, envelope, feed position and flange clocking.
  • Material and FinishAluminum or copper, surface treatment, paint, corrosion protection and environment.
  • Operating ConditionsPower level, temperature, pressure, outdoor exposure, vibration or other project conditions.
  • DocumentationRequired drawings, test data, inspection records, quantity and delivery schedule.
Engineered Feed Solutions

Elevating Microwave Systems to New Heights

The Dolph Microwave Feedhorn represents the pinnacle of microwave signal direction technology. It not only offers unparalleled precision and performance but also ensures that systems operate at their optimal parameters. With its robust construction, wide compatibility, and customization options, this feedhorn stands as a pivotal component in advancing microwave technology applications. Embrace the future of microwave transmission with the precision and reliability of Dolph’s Microwave Feedhorn, where every signal leads to new possibilities.

Need a standard or customized feedhorn?

Submit the frequency plan, polarization, reflector geometry, interface, quantity and required documentation for technical review.

Contact Dolph Microwave

Technical Documents

Downloads

Use the product catalog for preliminary configuration review and the flange document to compare published interface designations.



Product PDFMicrowave Feedhorn




Reference PDFFLANGE TYPE DESIGNATIONS INFORMATION

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]]> Waveguide Filter https://dolphmicrowave.com/product/waveguide-filter/ Mon, 29 Jan 2024 07:30:27 +0000 https://beizhifeng.t.lxi.cn/?post_type=product&p=211 Waveguide filters are essential components in microwave systems, designed to selectively allow signals within a certain frequency range to pass while blocking others. They are crucial for minimizing interference, enhancing signal quality, and ensuring efficient communication in various applications such as radar, satellite, and wireless communication systems.

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The Dolph Waveguide Filter emerges as a cornerstone in the realm of microwave communication, offering unmatched precision in signal filtering across various frequency bands including C, X, Ku, and Ka. Crafted with meticulous attention to detail, this filter is engineered from high-grade aluminum or copper, ensuring durability and high performance. Suitable for both standard and customized configurations, the Dolph Waveguide Filter is designed to meet the rigorous demands of modern communication systems, radar operations, and satellite transmissions.

Key Features

  1. Wide Frequency Compatibility: Accommodates a broad spectrum of frequency bands, ensuring versatility across different microwave applications.
  2. Exceptional VSWR: Features a Voltage Standing Wave Ratio (VSWR) of 1.2:1, minimizing signal reflection and maximizing transmission efficiency.
  3. High-Quality Materials: Precision machined from Aluminum (Al) or Copper (Cu), offering superior durability and performance.
  4. Precision Filtering: Delivers unparalleled accuracy in filtering, allowing desired signals while blocking unwanted frequencies.
  5. Customization Options: Provides flexibility with both standard and tailored designs to perfectly fit specific system requirements.
  6. Easy Integration: Designed for seamless integration with existing microwave systems, enhancing overall system performance without extensive modifications.
  7. Robust Design: Engineered to withstand the rigors of various operating environments, ensuring long-term reliability and stability.

Application Areas

  • Satellite Communication: Ensures clear and efficient signal transmission and reception in satellite communication systems.
  • Radar Systems: Enhances radar performance by filtering out irrelevant signals and minimizing interference.
  • Wireless Communication: Improves the quality and reliability of wireless communication networks by precise frequency filtering.
  • Scientific Research: Supports microwave experiments and research by providing accurate frequency selection and signal integrity.
  • Telecommunications: Essential for maintaining signal clarity and efficiency in complex telecommunications infrastructure.

Technical Specifications

Here’s a concise overview of the technical specifications that define the Dolph Waveguide Filter:

SpecificationDetails
Frequency BandsC, X, Ku, Ka
VSWR1.2:1
MaterialAluminum (Al), Copper (Cu)

This table highlights the engineering precision and adaptability of the Dolph Waveguide Filter, making it suitable for a wide range of system requirements.

Elevating Microwave Communication

The Dolph Waveguide Filter represents a leap forward in microwave signal processing, offering unparalleled precision and reliability. Its ability to filter signals accurately across various frequency bands makes it an indispensable tool in enhancing the performance of microwave systems. Whether for communication, radar, or research purposes, this filter ensures that only the desired signals reach their destination, optimizing system efficiency and performance. Embrace the future of microwave communication with the precision and reliability of Dolph’s Waveguide Filter, where every signal counts towards achieving peak performance.

Waveguide Filter
FLANGE TYPE DESIGNATIONS INFORMATION

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]]> OMT (Orthogonal Mode Transducer) https://dolphmicrowave.com/product/omt-orthogonal-mode-transducer/ Mon, 29 Jan 2024 07:30:00 +0000 https://beizhifeng.t.lxi.cn/?post_type=product&p=210 Orthogonal Mode Transducers (OMTs) are crucial components in microwave and RF systems, enabling the separation or combination of orthogonal polarization modes. They play a pivotal role in enhancing signal processing capabilities in applications such as satellite communications, radar systems, and radio astronomy, ensuring efficient and reliable signal transmission and reception.

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The Dolph Microwave Orthogonal Mode Transducer (OMT) stands as a testament to cutting-edge engineering in the field of microwave and RF communication. Designed to expertly separate or combine orthogonal polarization modes, this OMT is a critical component in a variety of high-performance systems. With options across C, X, Ku, and Ka frequency bands and the capability to handle linear/circular, dual, or coaxial polarization, the Dolph OMT offers unparalleled versatility and efficiency.

Key Features

  1. Broad Frequency Band Coverage: Supports a wide range of frequency bands including C, X, Ku, and Ka, catering to diverse application needs.
  2. Advanced Polarization Options: Accommodates linear/circular, dual, or coaxial polarization, enhancing signal processing capabilities.
  3. Exceptional VSWR: Boasts a Voltage Standing Wave Ratio (VSWR) of 1.2:1, minimizing signal reflection and maximizing transmission.
  4. High-Quality Materials: Constructed from premium Aluminum (Al) and Copper (Cu) for durability and optimal performance.
  5. High Isolation: Ensures minimal signal interference between ports, maintaining signal integrity across operations.
  6. High Power Handling: Designed to manage high power levels, suitable for demanding communication environments.
  7. Customizable Design: Offers flexibility with both standard and tailored configurations to meet specific system requirements.

Application Areas

  • Satellite Communications: Facilitates efficient signal routing and polarization management, ensuring clear and reliable satellite links.
  • Radar Systems: Enhances radar performance by enabling precise signal polarization control, crucial for accurate target detection and tracking.
  • Radio Astronomy: Supports advanced observation techniques by managing signal polarization, essential for capturing celestial data.
  • Wireless Networks: Improves network reliability and data throughput by optimizing signal polarization in wireless communication infrastructures.
  • Telecommunications: Ensures high-quality signal transmission and reception in complex telecommunications systems by effectively managing signal polarization.

Technical Specifications

To illustrate the technical prowess of the Dolph Microwave OMT, here’s a detailed specification table:

SpecificationDetails
Frequency BandsC, X, Ku, Ka
PolarizationLinear/Circular, Dual, Coaxial
VSWR1.2:1
MaterialAluminum (Al), Copper (Cu)
IsolationHigh
Power HandlingHigh
CustomizationAvailable for standard and special needs

This table highlights the Dolph OMT’s adaptability and performance excellence, showcasing its suitability for a wide range of system requirements.

Elevating Communication Systems

The Dolph Microwave OMT represents the pinnacle of signal polarization technology. With its broad frequency support, advanced polarization options, and high power handling, it plays an indispensable role in enhancing the performance and reliability of microwave and RF systems. Whether for satellite communication, radar systems, or any application requiring precise signal management, the Dolph OMT delivers unmatched efficiency and versatility. Choose Dolph for your OMT needs and experience the next level of communication system performance.

OMT (Orthogonal Mode Transducer)
FLANGE TYPE DESIGNATIONS INFORMATION

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]]> Waveguide Diplexer https://dolphmicrowave.com/product/waveguide-diplexer/ Mon, 29 Jan 2024 07:29:33 +0000 https://beizhifeng.t.lxi.cn/?post_type=product&p=209 Waveguide diplexers combine or separate transmit and receive bands through a common RF path. Published examples cover C-, X-, Ku- and Ka-band applications; send both bands, polarization, rejection target, power and mechanical interfaces for review.

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What We Match Before Quotation

Rx and Tx frequency ranges

State the two bands separately. The published datasheet includes C-, X-, Ku-, DBS- and Ka-band configurations with different receive and transmit ranges.

Polarization and rejection

Published configurations include linear, circular and co-polarized arrangements. Tell us the required polarization, cross-polarization and rejection or isolation target.

Power and interfaces

Include handling power, Tx/Rx interface, common-port interface and any flange requirement. The model sheet contains WR and SMA interface examples.

Mechanical layout

Send the mating drawing, available envelope or a simple sketch when the standard layout does not fit. Custom waveguide assemblies can be reviewed with the diplexer interfaces together.

Published Product Specifications

Specification Details
Frequency Bands C, X, Ku, Ka, or others
VSWR Excellent
Insertion Loss Low
Isolation High
Material Aluminum (Al), Copper (Cu)
Structure Compact
Customization Available for specific needs

Three-port RF path

The published diplexer structure uses separate receiving and transmitting ports with a common port connected to the antenna or antenna feed.

Model-specific values require confirmation

The published page confirms C, X, Ku and Ka-band options with low insertion loss, high isolation and aluminum or copper construction. Confirm numeric RF limits, polarization, interfaces and power against the selected datasheet and quotation.

Ordering code is defined in the sheet

Use the published ordering information together with your final frequency, polarization and interface requirement when requesting a quote.

Official Product Datasheet

Use the official PDF as an engineering reference and confirm the exact model, RF limits and interfaces in the quotation. The verified product-page specifications above remain the authoritative summary in this page body.

Dolph Microwave S and X band feed system using multiple waveguide components in one antenna feed assembly

Use the Diplexer as Part of the Feed Chain

For antenna feed work, the diplexer can be reviewed together with the parts connected before and after it. This helps keep the band plan, polarization and interfaces consistent across the assembly.

Need polarization separation? Review the OMT Orthogonal Mode Transducer.
Need a defined passband or rejection mask? Review the Waveguide Filter.
Need the horn, OMT, filter and diplexer as one assembly? Review RF Networks and Antenna Feeder Networks.

From Drawing to Tested Hardware

CNC workshop at Dolph Microwave
RF quality inspection equipment at Dolph Microwave

Manufacturing in-house

Dolph lists CNC machining, turning, waveguide forming and bending, anodising and passivation, abrasive machining, diamond grinding, electrolytic and electroless plating, soldering and brazing of Copper, Copper alloys and Aluminum, and electroforming.

Custom interface work

For non-standard layouts, Dolph can work from detailed drawings or simple sketches and review custom bends, waveguide sections and end flanges with the required RF interfaces.

Inspection requirement can be defined in the RFQ

If your procurement package needs specific RF limits, inspection evidence or test reports, include the required method, frequency points and acceptance limits before order release.

Published Test Resources

RF measurement to 100 GHzVector and scalar measurement systems are listed up to 100 GHz.
Antenna anechoic chambersAvailable when the supplied feed or assembly needs antenna-related verification.
High-power resourcesHigh-power transmitters are listed among the company measurement services.
Environmental test capabilityPublished services include temperature or altitude, salt fog and humidity testing.

Supplier Information You Can Verify

Quality Documentation certified company mark displayed by Dolph Microwave

Quality Documentation

Request current quality-system documentation for supplier qualification.

Founded in 2001

The company states that the former state-owned 806 Factory was its predecessor.

Dolph Microwave one-year warranty mark

One-Year Warranty

Products are warranted against defective material and workmanship for one year from delivery, subject to Dolph Microwave warranty terms.

Compliance mark displayed by Dolph Microwave

Compliance Process Capability

Request the applicable process-compliance documentation for the quoted configuration.

Dolph Microwave combined multi-band feed assembly

Send These Details for a Useful Quote

Rx frequency range

Tx frequency range

Polarization

VSWR and insertion-loss target

Rejection or isolation target

Handling power

Tx/Rx interface

Common-port interface

Mechanical drawing or space limit

Quantity and required timing

Technical References

C-Band Antenna Feeds and RF Networks

C-band feed configurations using filters, diplexers and other RF components.
Ku-Band Tx/Rx OMT and Filter Assembly

A published Ku-band Tx/Rx assembly with frequency, VSWR, cross-polarization and isolation data.
Multi-Band Antenna Feed Integration

How filters, OMTs and waveguide diplexers are combined in a multi-band feed layout.

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]]> Waveguide Phase Shifter & Septum Circular Polarizer https://dolphmicrowave.com/product/waveguide-phase-shifter-septum-circular-polarizer/ Mon, 29 Jan 2024 07:29:05 +0000 https://beizhifeng.t.lxi.cn/?post_type=product&p=208 Published waveguide phase shifter configurations cover WR28 to WR284 with manual or motorized operation and continuous 0–360° phase adjustment. For septum circular polarizers, specify the operating bands, polarization, power and mechanical interfaces.

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Dolph Microwave waveguide phase shifter and septum circular polarizer

Product Data at a Glance

WR-28 to WR-284
Size range
0-360°
Continuous phase shift
Manual / Motorized
Operation modes
Standard / Custom
Build options

The published phase-shifter range and the septum circular-polarizer configurations serve different RF functions. Confirm the required function, band, waveguide interface, control method, polarization and power before selecting a model.

Key Features

Versatile Size RangeAvailable in sizes from WR-28 to WR-284, catering to a wide array of waveguide configurations.

Flexible Operation ModesOffers both manual and motorized adjustments, ensuring optimal adaptability to different operational requirements.

Wide BandwidthSupports a broad frequency range, enhancing compatibility with various microwave applications.

Continuous Phase ShiftProvides a 0-360° continuous phase adjustment, allowing for precise signal phase alignment.

High Power HandlingEngineered to withstand high power levels, ensuring reliability under demanding conditions.

Optimal VSWR and Insertion LossFeatures excellent Voltage Standing Wave Ratio (VSWR) and minimal insertion loss, maintaining signal integrity.

Customization AvailabilityBoth standard and customized configurations can be tailored to meet specific system requirements.

Technical Specifications

Size RangeFrom WR-28 to WR-284
Operation ModesManual, Motorized
BandwidthWide
Phase Shift0-360° (Continuous)
Power HandlingHigh
VSWROptimal
Insertion LossMinimal

Application Areas

Satellite Communications: Facilitates accurate signal polarization and phase control for reliable satellite link establishment and maintenance.
Radar Systems: Enhances radar signal precision through meticulous phase adjustment and polarization optimization.
Wireless Networks: Improves signal clarity and reach in wireless communication systems by fine-tuning signal phase and polarization.
Telecommunications: Ensures superior signal quality in telecom infrastructure through precise phase shifting and polarization control.
Research and Development: Supports advanced experimental setups in microwave physics and engineering with accurate signal manipulation capabilities.

Send the interface data before choosing a model

Include Rx/Tx frequency ranges, RHCP/LHCP requirement, power, flange, manual or motorized control, mechanical limits and quantity.

Request Model Review

Waveguide phase shifter and septum circular polarizer product view

Published Phase-Shifter Range

Sizes: from WR-28 to WR-284
Description: manual, motorized
Wide bandwidth
Phase shift: 0-360° (Continuous)

A waveguide phase shifter changes the phase of the transmitted microwave signal. The current product page publishes the size range, operating modes and continuous phase-shift range above; numeric power, VSWR and insertion-loss limits must be confirmed for the selected model.

Separate the Required RF Function

This product page covers two related but distinct functions. The phase-shifter specifications must not be treated as polarizer performance, and polarizer configurations must not be used as universal phase-shifter model data.

Waveguide Phase Shifter

Published page data: WR-28 to WR-284, manual or motorized operation, wide bandwidth and 0-360° continuous phase shift.

Confirm model-specific frequency, power handling, VSWR, insertion loss, control arrangement, flange and mechanical limits in the quotation.

Septum Circular Polarizer

Specify the required Rx and Tx bands, RHCP/LHCP function, axial-ratio requirement, handling power, interfaces and common-port arrangement.

Confirm all model values and material information against the official datasheet and the approved interface drawing.

Download Official Datasheet

Ordering Information

DH – WSPT 7.2T8.4 P M A
DHDolph Microwave
WSPTPhase Shifter, Septum Polarizer
7.2T8.4Operation Freq. Range 7.2-8.4 GHz
PFlange Cover
MFlange Grooved
AMaterial Al

Confirm the mating interface

Use the Waveguide Flange Standard EIA & IEC reference when the mating flange is not fixed by an existing drawing.

For bolt pattern, sealing groove and EIA/IEC fit checks, see the Waveguide Flange Size Guide.

Confirm Flange and Drawing

How We Handle a Custom Build

Requirement reviewSend the bands, power, flange, polarization, control method, size limits and any existing drawing.

Electrical and mechanical matchDolph reviews the published models first, then prepares a custom configuration when the standard interface does not fit.

In-house fabricationDolph lists CNC machining, waveguide forming and bending, brazing, plating, anodising, passivation and assembly among its manufacturing capabilities.

RF verification before shipmentDolph states that parts are checked in its test lab and microwave chamber before shipment.

For a wider system review, see Custom Antenna Feed Systems or the Manufacturing capability page.

Dolph Microwave S and X band feed system engineering drawing

Complete the Feed Chain When Needed

Use the phase shifter and septum polarizer as one section of the feed network, then match the surrounding parts to the same frequency, polarization and interface requirements.


Dolph Microwave OMT orthogonal mode transducer

OMT (Orthogonal Mode Transducer)

Use when the feed assembly must separate or combine orthogonal polarization modes.


Dolph Microwave waveguide diplexer for antenna feed networks

Waveguide Diplexer

Use when transmit and receive bands must be routed through one feed arrangement.


Dolph Microwave microwave feedhorn range

Microwave Feedhorn

Use when the polarization section must connect into a complete antenna feed assembly.


Dolph Microwave rectangular to circular waveguide transition

Rectangular to Circular Waveguide Transition

Use when the surrounding waveguide geometry requires a rectangular-to-circular interface change.

Factory and Quality Information

Since 2001Dolph states that it has manufactured microwave parts and antenna feed systems in Xi’an since 2001.
One-Year WarrantyPublished warranty coverage is one year from delivery for defective material and workmanship, subject to warranty terms.
RF Test SupportThe factory lists RF test equipment, a testing laboratory and microwave chamber capability.
Compliance ProcessesAnodising and passivation are listed as Compliance-compliant manufacturing processes.

Request the current quality-system and compliance documents required for your supplier file or order approval.

Review Company Information

Dolph Microwave machining equipment
Dolph Microwave RF testing laboratory
Dolph Microwave microwave anechoic chamber
Dolph Microwave coordinate measuring machine

Send the requirement that controls the build

Send Rx/Tx bands, polarization, handling power, waveguide or flange interface, control preference, mechanical envelope, quantity and any existing drawing.

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]]> RF Networks https://dolphmicrowave.com/product/rf-networks/ Mon, 29 Jan 2024 07:28:35 +0000 https://beizhifeng.t.lxi.cn/?post_type=product&p=206 RF (Radio Frequency) networks are telecommunications networks that use radio waves to transmit and receive data over the air. They are essential for mobile phone systems, broadcast television, satellite communication, and various forms of wireless networking. RF networks enable connectivity and communication over vast distances, supporting a wide range of applications from personal communication to global broadcasting.

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Dolph Microwave RF network feed system assembly

Custom RF Feed Networks for Multi-Band Antenna Systems

Dolph Microwave designs and manufactures RF feed network assemblies that combine the required microwave components into one matched signal path. Published configurations include multi-port and multi-band designs with single or dual polarization.

Standard and customized builds are available. Send your Rx/Tx frequency ranges, polarization, power level, interfaces and mechanical limits for engineering review.

Multi-port
Published option

Multi-band
Published option

Single / Dual
Polarization

One Feed Network, Matched to Your RF Chain

We can build the feed network around the functions your antenna system needs, using Dolph microwave components such as a microwave feedhorn, OMT, waveguide filter, diplexer and other waveguide sections.

Frequency planMatch the required Rx and Tx bands.

PolarizationSingle, dual, linear or circular as required by the build.

InterfacesWaveguide, flange and connector requirements are reviewed together.

Mechanical layoutThe assembly is configured to your available space and mounting limits.

Combined C and Ku band antenna feed network from Dolph Microwave

Send the Inputs That Define the Build

Exact Rx and Tx frequency ranges

Polarization and port arrangement

Dish size, type and available envelope

Transmit power level

Waveguide, flange and connector interfaces

Quantity and required delivery timing

Published RF Network Configuration Data

The following values reproduce the model data shown in Dolph Microwave’s RF Networks catalog. Blank fields indicate values not stated in the published table. Final performance and interfaces should be confirmed for the selected configuration.

S and X band antenna feed system built by Dolph Microwave

Published bandsS, X, C, C/Ku, DBS, Ku/Ka and Ka examples
VSWR valuesPublished examples range from 1.25 to 1.4
Published materialAl
Power entries100 W, 500 W and 1000 W in the catalog table

Model Rx Freq. (GHz) Tx Freq. (GHz) VSWR Pol. Type
DH-Feed-S-RO… 2.1-2.5 1.25 RHCP/LHCP
DH-Feed-X-4-RT… 7.25-7.75 7.9-8.4 1.4 RHCP/LHCP
DH-Feed-X-4-RT… 7.25-7.75 7.9-8.4 1.4 HLP/VLP
DH-Feed-SX-4-RT… 7.8-8.4   2.2-2.3 2.025-2.11 1.25 RHCP/LHCP
DH-Feed-C-4-RT… 3.4-4.2 5.85-6.725 1.25 HLP/VLP
DH-Feed-C-4-RT… 3.4-4.2 5.85-6.725 1.25 RHCP/LHCP
DH-Feed-CKu-4-RO… 3.4-4.2   10.7-12.75 1.35 RHCP/LHCP   HLP/VLP
DH-Feed-CKu-4-RO… 3.4-4.2   10.7-12.75 1.35 HLP/VLP
DH-Feed-DBS-4-RT… 10.7-12.75 17.3-18.4 1.3 RHCP/LHCP
DH-Feed-Kuka-4-RT… 12.25-12.75   19.60-21.20 14.0-14.5   29.4-31.0 1.35 HLP/VLP
DH-Feed-Ka-4-RT… 17.7-21.2 27.5-31.0 1.25 HLP/VLP
DH-Feed-Ka-4-RT… 17.7-21.2 27.5-31.0 1.25 RHCP/LHCP
DH-Feed-Ka-4-RTTrk… 17.7-21.2 27.5-31.0   Trk18.3-20.2 1.35 RHCP/LHCP
IL (dB) Axial Ratio (dB) Cross-pol (dB) Isolation Tx/Rx Freq. Isolation Handling Power(W) Interface Tx/Rx Com.Port Material
1.5 20 100 N-K Al
0.75 25 85 1000 WR112 Φ54 Al
35 85 1000 WR112 Φ54 Al
0.8 20 15 20 100 WR112/N-K Al
0.3 30 85 1000 WR229/137 Φ57.8 Al
0.4 0.5 30 85 1000 WR229/137 Φ57.8 Al
0.35/0.55 0.5 30 30 500 WR229/75 Φ62 Al
0.25 35 30 30 500 WR229/75 Φ62 Al
0.3 0.5 30 85 500 WR75/62 Φ18.18 Al
0.5 1.5 30 85 30 500 WR75/42/28 Al
0.7 35 85 500 WR42/28 Φ11.5 Al
0.7 0.5 30 85 500 WR42/28 Φ11.5 Al
1.2 0.5 30 85 500 WR42/28/42 Φ11.5 Al

Published Ordering Code

The catalog gives the following ordering example for a Ku-band transceiver feed assembly.

DH – Feed-Ku-4-RT LP P A

DHDolph Microwave
FeedOMT+TRF Combiner
KuStandard Ku-band
44 Port
RTTransceiver
LPPol. Type Linear H/V
PFlange Cover
MFlange Grooved
AMaterial Al

Build the Feed Chain Around the Required Function

Dolph Microwave orthogonal mode transducer for RF feed networks

Polarization Split or Combination

When your network requires separate polarization paths, integrate an OMT. For circular polarization or phase-control requirements, review Dolph’s phase shifter and septum polarizer options.

Discuss the Polarization Layout

Dolph Microwave waveguide filters for antenna feed network integration

Band Selection and Tx/Rx Separation

Use a waveguide filter when the feed chain needs band selection. Use a waveguide diplexer when transmit and receive paths must be separated or combined in the network.

Read the Multi-Band Feed Network Article

Dolph Microwave waveguide diplexer and feed assembly

Complete Feed Systems for More Complex Builds

If you need the horn, OMT, filters, diplexers, polarizers and other waveguide parts supplied as a complete feed system, see Dolph’s Antenna Feeder Networks or the Custom Antenna Feed Systems capability page.

See C-Band Feed and RF Network Examples

Need a Configuration Outside the Published Examples?

Send the frequency plan, polarization, power, interface, dish data, mechanical envelope, quantity and timing. Dolph can review a standard or customized RF network configuration.

Quality inspection of microwave components at Dolph Microwave

Dolph Microwave CNC workshop
Dolph Microwave on-site microwave test chamber

Manufacturing and Test Support in Xi’an

Dolph was founded in 2001 and manufactures microwave components and feed systems in China. Manufacturing capabilities listed by Dolph include CNC machining, turning, waveguide forming and bending, soldering and brazing of copper, copper alloys and aluminium, plating and electroforming.

Dolph’s manufacturing information also lists a testing laboratory, microwave chamber and coordinate measuring equipment. Its Quality Manual and Quality Procedure use ISO 9001:2015, and manufacturing capabilities include anodising and passivation to RoHS requirements.

Dolph states a one-year warranty for defects in material and workmanship under the published warranty terms.

Technical Documents

Use the flange reference for interface designations and the RF Networks catalog for the published model table and ordering information.

The post RF Networks appeared first on DOLPH MICROWAVE.

]]> Antenna Feeder Networks https://dolphmicrowave.com/product/antenna-feeder-networks/ Mon, 29 Jan 2024 07:28:05 +0000 https://beizhifeng.t.lxi.cn/?post_type=product&p=204 Integrated antenna feed assemblies can combine feedhorn, OMT, filter, diplexer, polarizer and rotary-joint functions. Send the operating bands, polarization, waveguide interfaces, available envelope and reflector geometry for engineering review.

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Custom S/X-band antenna feed system manufactured by Dolph Microwave

Build the Feed Around Your RF Plan and Reflector

We can supply the complete feed assembly or only the functions you need. The frequency plan, polarization, waveguide interfaces, available envelope and reflector geometry are reviewed together before the build is released.

Feed designs
Single-band, dual-band and triple-band
Polarization
Single or dual, linear or circular as required
Feed types
Prime focus, offset, ring focus and Cassegrain
Project scope
Standard configurations or customized assemblies

Send Your Frequency Plan

Components We Integrate Into the Feed Chain

The feed network can be built from Dolph microwave components as one matched mechanical and RF assembly.

Dolph Microwave feedhorns for antenna feeder networks

Microwave Feedhorn

C, X, Ku and Ka-band feedhorn configurations are published, with linear/circular, dual or co-polarization options on the feedhorn product range.

Dolph Microwave waveguide filter for feed network band selection

Waveguide Filter

Added where the RF path requires controlled band selection or rejection.

Dolph Microwave waveguide diplexer used in antenna feeder networks

Waveguide Diplexer

Used to separate or combine transmit and receive paths in the feed chain.

Dolph Microwave waveguide rotary joint for tracking antenna feed systems

Waveguide Rotary Joint

Supports RF transmission through rotating interfaces where the antenna architecture requires movement.

Single-Band to Multi-Band Feed Configurations

Dolph offers single-band, dual-band and triple-band antenna feed designs. Published feed-network work includes combined C/Ku, S/X, DBS, Ku/Ka and Ka examples.

Diverse Feed System DesignsSingle-band, dual and triple-band antenna feeds.
High-Quality ComponentsFilters, OMTs, polarizers, horns, diplexers and rotary joints.
Versatile Integration CapabilitiesWaveguide components and sub-systems; prime-focus, offset, ring-focus and Cassegrain feeds; spectrum-monitoring solutions.
Optimal PerformanceParabolic reflector antenna feed elements are designed around the selected system requirements.
Wide Application RangeSatellite communication, earth observation, deep-space missions and radio astronomy.
ISO9001 Certified Partner CollaborationDolph states that it cooperates with ISO9001-certified antenna reflector suppliers in China for relevant antenna projects.
Comprehensive Solution OfferingQuick-deploy antennas, parabolic prime-focus reflector antennas, earth stations and Trifold Transportable Antennas are included in the published portfolio.

Combined C and Ku-band antenna feed network built by Dolph Microwave

Mechanical detail of a combined C and Ku-band antenna feed network

Technical Specifications

Feed System DesignSingle-band, Dual, Triple-band
Key ComponentsFilters, OMTs, Polarizers, Horns, Diplexers
Integration CapabilitiesWaveguide Components, Various Feed Types
Application FocusSatellite Comm., Earth Observation, etc.
CollaborationISO9001 Certified Partners
Product RangeQuick-Deploy Antennas, Earth Stations

Published S/X Dual-Band Feed Example

This is a published Dolph configuration for TT&C applications. It is shown as a project reference, not as a universal specification for every feeder network.

Published S/X dual-band feed system drawing with dimensions and bill of materials
Published drawing retains the dimensional views and bill of materials shown by Dolph Microwave.
ModelDH-Dualband-Feed-S/Tx&Rx-X/Rx 01
F/D0.33
X-band7.8-8.4GHz
X-band PolarizationRHCP/LHCP
Flange interfaceWR112/FBP84, 1-port, connected with LNA system
VSWR＜1.25
Axial ratio＜0.8dB
Rx Noise factor＜0.5dB
S-bandTx 2025-2110MHz; Rx 2200-2300MHz
S-band PolarizationRHCP&LHCP
Interface typeN-type, 2-port
Power capacity100W peak

X- Band reception in RHCP
X- Band septum polarizer for low noise performance and low axial ratio
S- Band transmission in RHCP
X- Band Loopback test injection port for testing the complete X Band reception chain
Two Band coaxial waveguide feed, both bands on axis
Optional X- Band waveguide filter for radar rejection
Feed is controlled over the Orbital Data Bus (ODB)
Integrated low phase noise X- Band block downconverter to L- Band IF output (Optional)
Heavy-duty aluminum enclosure, powder coated and assembled with stainless steel fasteners to eliminate external corrosion
Pressurized feed with temperature and humidity sensors

Published Ordering Code

The catalog gives the following ordering example for a Ku-band transceiver feed assembly.

DH – Feed-Ku-4-RT LP P A

The catalog key also lists M as the grooved-flange designation.

DHDolph Microwave
FeedOMT+TRF Combiner
KuStandard Ku-band
44 Port
RTTransceiver
LPPol. Type Linear H/V
PFlange Cover
MFlange Grooved
AMaterial Al

Published Catalog Notes

The linked RF Networks catalog identifies the RF network as a feed system with multi-port and multi-band configurations, designed to transmit or receive electromagnetic waves and used in broadcast, TV and other wireless devices. Standard and customized configurations are available.

Multi port or multi band
Polarization: Single, dual
Easy to generate
Travel long distances
Easily penetrate buildings
Quick delivery

Send the Inputs That Define Your Feed Network

Send the available RF and mechanical inputs. If you only have a drawing, part number or partial specification, our engineering team can start from that.

Rx and Tx frequency rangesExact operating ranges and bandwidth.
Polarization and portsLinear or circular, sense/orientation and port arrangement.
Dish size and geometryReflector type, diameter, f/D or antenna model and available envelope.
Transmit powerPower level the network must handle.
InterfacesWaveguide sizes, flange types, connectors and mounting limits.
Quantity and timingQuantity, documentation needs and delivery schedule.

Custom antenna feed assembly interface detail

Manufacturing and Verification in Xi’an

Dolph Microwave has manufactured microwave components and feed systems since 2001. Published factory capability covers machining, forming, joining, finishing and RF/mechanical verification for custom microwave work.

Dolph Microwave CNC workshop in Xi'an
CNC workshop
Dolph Microwave quality inspection equipment
Quality inspection
Dolph Microwave microwave test chamber
Microwave test chamber

CNC machining
Lathes,Turning facilities
Waveguide forming and bending
Anodising and Passivation (Compliance)
Abrasive Machining
Diamond Grinding
Plating – Electrolytic and Electroless
Soldering and Brazing of Copper, Copper Alloys and Aluminium
Electroforming

Application Focus

Dolph’s published application scope for antenna feeder networks includes the areas below.

Satellite Communication

Establishing and maintaining satellite communication links for data, voice and video transmission.

Earth Observation

Monitoring and collecting environmental data for climate research, natural-disaster assessment and resource management.

Deep Space Missions

Communication with spacecraft exploring the solar system and beyond.

Radio Astronomy

Radio-wavelength observation within research antenna systems.

Dolph Microwave large earth station antenna for integrated feed system projects

Earth Station Antenna

Use this range when the reflector antenna and feeder network need to be reviewed in the same project scope.

Quality, Compliance and Warranty

Request current quality-system, compliance and warranty documents for supplier qualification.

Dolph Microwave quality-documentation badge

Quality Documentation

Request current quality-system documentation.

Dolph Microwave compliance-documentation badge

Compliance Documentation

Request the applicable process-compliance documentation.

One-year product warranty badge published by Dolph Microwave

One-Year Warranty

Products are warranted against defective material and workmanship for one year from the date of delivery, subject to Dolph Microwave’s published warranty terms.

Choose the Scope That Matches Your Project

For a complete feed-only project beyond the published configurations, use our Custom Antenna Feed Systems capability. If you need a discrete function, review the Microwave Feedhorn, OMT, Waveguide Filter or Waveguide Diplexer.

Send the frequency plan, polarization, reflector type, interfaces, power level and quantity you have. We will use those inputs to review the right feed-network scope with you.

Custom combined C and Ku-band feed network from Dolph Microwave

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