Feed Horns & Polarizers
- Corrugated and smooth-wall feed horns
- Septum (circular) polarizers and phase shifters
- Linear or circular polarization, switchable
- For prime focus, offset and Cassegrain antennas
Dolph Microwave · Xi’an, China
Custom High-Power Microwave Components Manufacturer
You send the specification — we build the part. Feed horns, OMTs, diplexers, polarizers, rotary joints, high-power loads and complete feed networks, all made and tested in our own factory in Xi’an since 2001.
ISO 9001:2015 CertifiedMaking Parts Since 20011-Year Warranty
25+Years Making Microwave Parts
8Frequency Bands, From L to V
9Workshop Processes In-House
11.3 mLargest Antenna We Have Built
What We Make
Custom Components Made to Your Order
Tell us the frequency band, power level, flange type and size limits. We build the part to match — every order follows your drawing or specification.
Rotary Joints & Waveguide
- High-power waveguide rotating joints
- Bends, twists, tees, transitions and switches
- Flanges to EIA and IEC standards
- Flexible and seamless waveguide sections
OMTs, Diplexers & Filters
- Orthogonal mode transducers (OMTs)
- C-band and Ku-band diplexers, 2 or 4 ports
- Waveguide bandpass filters, e.g. WR75
- TX/RX isolation made to your requirement
Multi-Band Feed Networks
- Feed systems with one, two or three bands
- Combined S/X and C/Ku feed networks
- Complete RF networks and sub-assemblies
- Spectrum monitoring options
High-Power Parts
Parts That Handle High Transmitter Power
These parts work in transmitter lines and test setups where power is high and runs for many hours. We make them in copper, copper alloys or aluminum, with water cooling where air cooling is not enough.
High-Power Terminations
Loads that safely absorb full transmitter power during operation and testing.
High-Power WG-Coax Adapters
Adapters that join waveguide to coaxial cable in high-power lines, with low loss.
Pressure Windows
Sealed windows that keep air pressure inside the waveguide while the signal passes through.
Waveguide Switches
Motorized or manual switches that route the signal between two paths, for example to a backup transmitter.
More Component Families
Waveguide, Coaxial and Industrial Parts
Besides feed networks, we make a wide range of standard and custom waveguide and coaxial parts. Many buyers order them together with a custom feed, so everything fits and works together.
The photo below shows a combined C/Ku feed we built. Around it, a complete order can include bends, couplers, filters, switches and loads from the families listed here — all from the same workshop.
Waveguide Components
Bends, twists, tees, transitions and flanges for your waveguide runs.
Ferrite & Power Control
Parts that route, limit or absorb power in your line.
Couplers & Measurement
Parts for sampling signals and calibrating test setups.
Industrial & Coaxial
Parts for industrial microwave systems and coaxial lines.
Our Workshop
How We Make Your Parts
Everything happens in our own factory, so you talk directly with the people who build your parts — and lead times stay short.
CNC Machining
Milling and turning of copper, copper alloys and aluminum, to the tolerances waveguide parts need.
Forming & Bending
Waveguide formed and bent to the shape your layout needs, including sweeps and miter bends.
Soldering & Brazing
Joints soldered and brazed in copper, copper alloys and aluminum, so they stay tight under high power.
Plating & Electroforming
Electrolytic and electroless plating for good conductivity, and electroforming for shapes that are hard to machine.
Surface Treatment
Anodizing and passivation that follow RoHS rules, plus diamond grinding for fine surfaces.
Testing
Our test lab and microwave chamber check the electrical performance of every part before it ships.
Complete Antenna Systems
We Also Build Complete Antennas
The same feeds and waveguide parts we sell as components go into our own antenna products — from small flyaway antennas up to large earth stations.
LEO/MEO Tracking Antennas
2.4–7.3 m antennas that follow moving satellites, from L band up to Q/V band, with combined S+X feeds and automatic tracking.
Large Earth Station Antennas
6.2–11.3 m antennas for fixed ground stations, meeting FCC 25.209 and ITU-R S.580-5 rules, with C/Ku/Ka feeds made in-house.
Quick-Deploy Flyaway Antennas
Carbon-fiber antennas from 0.75 to 2.4 m. The 1.2 m model sets up in about 5 minutes, without tools, in Ku or Ka band.
Antenna sizes we build (meters)
0.751.21.82.43.74.56.06.27.37.59.011.3
Your Order, Step by Step
What Happens After You Contact Us
1
You Send Your Requirements
Email us the frequency band, power level, flange type and size limits. Our engineers check the details and ask if anything is unclear.
2
We Design the Part
We do the electrical and mechanical design. Flanges follow EIA or IEC standards unless you need something different.
3
Machining and Forming
Parts are milled, turned, formed and bent in our own workshop.
4
Joining and Surface Finish
Parts are soldered or brazed, then plated, anodized or passivated. Surface treatment follows RoHS rules.
5
Testing
Every part is tested in our lab and microwave chamber before it ships.
6
Delivery and Warranty
You receive the parts with a one-year warranty. Bad material or workmanship is repaired or replaced for free.
Where Our Parts Are Used
Four Fields That Use Our Components
Satellite Communication
Feeds and waveguide parts for ground stations that send and receive data, voice and video by satellite.
Earth Observation
Parts for ground stations that receive weather and environmental data from satellites.
Deep Space Missions
Our products have been used in satellite communication systems and space exploration tasks.
Radio Astronomy
Feed parts and polarizers for radio telescopes that observe the sky at radio wavelengths.
About Dolph Microwave
A Real Factory With a Long History
Dolph Microwave grew out of state-owned Factory 806, and we have made microwave parts and antenna feed systems in Xi’an since 2001.
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ISO 9001:2015 certifiedOur quality system is certified, and every order follows written quality procedures.
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Everything made in one factoryMachining, brazing, plating and testing all happen in our own workshop — see how we work.
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Certified partners for full systemsFor complete antenna projects we work with ISO 9001-certified reflector suppliers in China.
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One-year warranty, in writingIf a part fails from bad material or workmanship within one year of delivery, we repair or replace it for free.
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A factory address you can visitFengHuiNan Road NO.34, High-Tech Zone, Xi’an, China — more about us.
Common Questions
Questions Buyers Often Ask
What can Dolph Microwave make?
We make feed horns, OMTs, diplexers, filters, polarizers, rotary joints, high-power terminations and water-cooled loads, waveguide-to-coaxial adapters, waveguide switches, pressure windows, and complete feed networks with one, two or three frequency bands.
Which frequency bands do you cover?
We build parts and feed networks for systems working in L, S, C, X, Ku and Ka bands, including combined systems such as S/X and C/Ku. Our antenna products also reach Q and V band.
Do you make everything yourselves?
Yes. Our own workshop does CNC milling and turning, waveguide forming and bending, soldering and brazing, plating, electroforming, anodizing and passivation, grinding, and final testing in our lab and microwave chamber.
What certifications and warranty do you have?
Our quality system is certified to ISO 9001:2015, and our surface treatment follows RoHS rules. Every product has a one-year warranty: if a part fails because of bad material or workmanship, we repair or replace it for free.
How do I start a custom order?
Email your frequency band, power level, flange type and size limits to Sales@dolphmicrowave.com, or call +86 29 8881 0979. Our engineers will look at your requirements and reply with a design proposal and a quote.
Articles & Reports
Read More About Our Work
Article5 Kinds of Satellite Communication AntennasWhich antenna type fits which satellite jobArticleWhy Dish Antennas Are So Common in Microwave SystemsThe simple reasons behind a popular choiceArticleHow Big Are Satellite Antennas?Common sizes and what they are used forArticleWhat Size Is an Earth Station Antenna?How to think about antenna size for a ground stationDelivery ReportQuad-Ridged Horn Antenna: Delivery & TestingA recent custom horn order, from production to final testDelivery Report4.5 m X-Band Weather Radar Reflector: Test & DeliveryFactory test results before shipping to the customer
Get a Quote
Send Us Your Requirements
Email us your frequency band, power level and size limits. Our engineers will look at them and reply with a design proposal and a quote.
Dolph Microwave · FengHuiNan Road NO.34, High-Tech Zone, Xi’an, China · Making microwave parts since 2001
