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.
Antenna Feeder Networks
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.
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
Components We Integrate Into the Feed Chain
The feed network can be built from Dolph microwave components as one matched mechanical and RF assembly.
OMT (Orthogonal Mode Transducer)
Used to separate or combine orthogonal polarization paths inside the feed network.
Waveguide Filter
Added where the RF path requires controlled band selection or rejection.
Waveguide Diplexer
Used to separate or combine transmit and receive paths in the feed chain.
Phase Shifter & Septum Polarizer
For phase and polarization functions inside circular or rectangular waveguide feed sections.
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.
Reflector Supplier QualificationFor a project supplied with a partner reflector, request the named manufacturer, current quality-system certificate and allocation of assembly and acceptance-test responsibilities.
Comprehensive Solution OfferingQuick-deploy antennas, parabolic prime-focus reflector antennas, earth stations and Trifold Transportable Antennas are included in the published portfolio.
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.
CollaborationProject-specific reflector supplier; current qualification documents on request
Product RangeQuick-Deploy Antennas, Earth Stations
Published S/X Dual-Band Feed Example
This published S/X configuration is a project reference, not a universal rating. Confirm whether the Tx/Rx labels refer to the ground or spacecraft equipment, and identify the measured receive chain for the listed noise figure before using it in a link budget.
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
Feed Network Configuration Checks
A passive feed network routes signals by frequency and polarization between the RF equipment and antenna feed. Link distance and building penetration depend on the complete radio system and propagation path; they are not standalone feed-network specifications.
Multi port or multi band
Polarization: Single, dual
Defined RF signal paths
Band-specific loss limits
Port-to-port isolation
Project-specific lead time
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.
Manufacturing and Verification
Dolph Microwave’s published manufacturing scope includes machining, forming, joining, finishing and RF/mechanical verification. Define the drawing revision, inspection points and RF acceptance tests for the selected feed assembly.
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.
Earth Station Antenna
Use this range when the reflector antenna and feeder network need to be reviewed in the same project scope.
LEO / MEO Tracking Antenna
Use this range when the application requires a tracking antenna rather than a feed-only assembly.
Quality, Compliance and Warranty
Request current quality-system, compliance and warranty documents for supplier qualification.
Quality Documentation
Request current quality-system documentation.
Compliance Documentation
Request the applicable process-compliance documentation.
One-Year Warranty
Published product information describes a one-year warranty against defective material and workmanship. Confirm the start date, coverage and return conditions in the quotation and applicable 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.
