Combined Multi-Band Feeds
One dish, several bands. A combined feed lets your antenna work in C and Ku band at the same time, without swapping parts. See our antenna feeder networks.
Dolph Microwave · Since 2001
Custom Antenna Feed Systems Manufacturer
Tell us your frequency band and dish size — we build the complete feed system for it. Single-band, dual-band or triple-band. The horn, OMT, filter, diplexer, polarizer and rotary joint are all made in our own factory, so you deal with one supplier for the whole feed chain.
ISO 9001:2015 certified factoryRoHS compliant1-year warranty
An S/X-band feed system we built for a customer project
Founded in 2001Grown out of the state-owned 806 Factory
ISO 9001:2015Written quality manual for every job
RoHS CompliantSurface treatment done to RoHS rules
1-Year WarrantyFree repair or replacement for defects
20+
Years building microwave parts
112GHz
Horn antennas from 0.32 up to 112 GHz
4
Bands covered — C, X, Ku and Ka
9
Manufacturing steps done in-house
Feed Systems
One Band, Two Bands, or Three — We Build the Feed for It
The feed decides how well the whole antenna works. We design each feed system for your band, your polarization and your dish — not the other way round.
Microwave Feed Horns
The horn sits at the focus of your dish and shapes how the dish is lit up. We build horns for prime focus, offset, ring focus and Cassegrain dishes.
Custom Feed Assemblies
Send us a drawing or just your requirements. We build the full feed chain from our own waveguide parts — read about our custom feed network work.
Frequency Bands
The Bands We Work In Every Day
Most of our feed systems are built for these four satellite bands. Other bands on request.
C-Band
4 – 8 GHz
The classic satellite band. Keeps working well in heavy rain, so it is common for links that must stay up all year.
X-Band
8 – 12 GHz
Used heavily by defence, weather and science satellites — a band we know well from government-style projects.
Ku-Band
12 – 18 GHz
The most common band for VSAT, TV broadcast and flyaway antennas. Most quick-deploy feeds we build are Ku.
Ka-Band
26.5 – 40 GHz
For high-data-rate satellite links. We build Ka feeds down to our 1.2 m Ka-band prime focus antenna.
Parts of the Feed Chain
Every Part in the Chain, Made by Us
Many suppliers sell you single parts. We make all of them, so every connection in your feed chain fits and is tested together before shipping.
OMT (Orthogonal Mode Transducer)
Splits one signal into two polarizations, or combines them back into one.
C / X / Ku / KaVSWR 1.2:1High Isolation
Waveguide Filters
Let the band you want pass through and block everything else.
C / X / Ku / KaVSWR 1.2:1Al / Cu
Waveguide Diplexers
Put transmit and receive on different bands in one waveguide run.
High IsolationLow LossCompact
Phase Shifters & Polarizers
Turn linear polarization into circular, and set phase anywhere from 0 to 360°.
WR-28 ~ WR-2840–360° PhaseManual / Motorized
Waveguide Rotary Joints
Pass the signal while the antenna turns — for tracking antennas and radar.
Tracking AntennasHigh PowerAl / Cu
RF Networks
The full chain — horn, OMT, filter, diplexer — built and tested as one unit.
Full Feed ChainCustom LayoutTested Assembly
Feed Layouts We Build
Not sure which layout your dish needs? Tell us the dish type and band — we will recommend one.
Prime Focus & Offset FeedsThe feed sits in front of the dish
Ring Focus & Cassegrain FeedsFor dishes with a sub-reflector
Spectrum Monitoring FeedsFor listening and measurement stations
Waveguide Sub-SystemsAny part of the chain, built to order
Standard Gain Horns
One Horn Series, 0.32 to 112 GHz
Our standard gain horns are linearly polarized, light and corrosion-resistant. Customers use them for EMI/EMC testing, direction finding, surveillance and antenna gain measurement. Need a different gain or size? We build that too.
0.32 – 112 GHzFrequency range
WR-2300 – WR-28Waveguide sizes
10 / 15 / 20 / 25 dBCommon gain values
10° / 18° / 30° / 55°3 dB beamwidth options
How Ordering Works
From Your Email to a Tested Feed System
No long procedures. Four steps, and you always know which step your order is in.
Tell Us What You Need
Step 01
Band, polarization, power, flange. A drawing helps, but is not required.
We Design and Quote
Step 02
You get a technical proposal and a price from our engineers.
We Build It
Step 03
Machining, brazing and surface treatment in our own workshop.
We Test and Ship
Step 04
Checked in our lab and anechoic chamber, then sent to your door.
Factory & Testing
Machined, Brazed and Tested Under One Roof
We don’t send critical steps outside. Milling, turning, bending, brazing and assembly all happen in our own workshop, so we control the quality at every step.
CNC MachiningLathes & TurningWaveguide Forming & BendingAnodising & Passivation (RoHS)Abrasive MachiningDiamond GrindingElectrolytic & Electroless PlatingSoldering & Brazing (Cu / Al)Electroforming
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Copper, copper alloys and aluminium
We solder and braze all the common waveguide materials in-house.
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Tested before it leaves
Every feed system is checked in our testing lab and on-site hybrid anechoic chamber.
Applications
Where Our Feed Systems Work
Our feeds and microwave parts are running today in satellite, aerospace, defence and research projects.
Satellite Communication
Feed chains for earth station, flyaway and quick-deploy antennas in daily operation.
Earth Observation
Feeds for ground stations that receive data from low and medium orbit satellites.
Deep Space Missions
Our products have played key roles in space exploration tasks.
Radio Astronomy & Radar
Feeds for research antennas, spectrum monitoring stations and radar systems.
Matching Antennas
Need the Antenna Too?
We also supply complete antennas, and can put the whole system together — our feed, our waveguide parts, and antennas from partner factories we have worked with for years.
Earth Station Antennas
View product
LEO / MEO Tracking Antennas
View product
Quick-Deploy Flyaway Antennas
View product
Microwave Customized Products
View product
One-Year Warranty
If a part is defective, we replace it. Repairs from normal use are free within one year of delivery.
Worldwide Delivery
Our sales team handles international shipping and customs paperwork every week — your order arrives without surprises.
Direct Engineer Replies
You talk to people who design and build the parts — not a call center. Technical questions get technical answers.
Downloads
Brochures and Certificates
Save these for your supplier file. The ISO certificate is the same one we show in audits.
Dolph Microwave Product Brochure
Download PDF
ISO 9001:2015 Certificate
Download PDF
Connectors & Cable Assemblies Brochure
Download PDF
Terms & Conditions
Download PDF
Technical Articles
Read More About Feed Systems
Short, practical articles written by our team. Good background reading before you specify a feed.
Antenna Feed System Design: 6 Components Guide
The six parts every feed network designer should check.
Read article
Avoiding 3 Common Antenna Feeder Mistakes
Three feeder design errors we see often — and how to avoid them.
Read article
What Are the Different Types of Antenna Feed Line?
Feed line types compared, in plain terms.
Read article
5 Key Differences: Horn vs Conical Antennas
Which horn shape fits your dish — a quick comparison.
Read article
What Is a Waveguide Horn Antenna?
The basics of horn antennas, explained simply.
Read article
Ku-Band Tx/Rx OMT Assembly — Delivery Note
A recent OMT assembly we built and shipped.
Read article
Quality inspection in our Xi’an factory
About Dolph
Why Customers Choose Dolph
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We have done this since 2001
Dolph grew out of the state-owned 806 Factory. Waveguide work is not new to us — it is what the company was built on. About our company.
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Quality is written down, not promised
Our Quality Manual and Quality Procedure follow ISO 9001:2015. Every job goes through the same checks.
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One supplier for the whole system
Feed, waveguide parts and antennas — we put the full chain together so you don’t have to coordinate three vendors.
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A real warranty
One year from delivery. Defective parts are replaced, and normal-use repairs are free.
FAQ
Questions Buyers Ask Us
What feed systems can you build?
Single-band, dual-band and triple-band feed systems, with horns, OMTs, filters, diplexers, polarizers and rotary joints. They fit prime focus, offset, ring focus and Cassegrain dishes.
Which frequency bands do you cover?
C, X, Ku and Ka band. Our standard gain horns run from 0.32 to 112 GHz, with waveguide sizes from WR-2300 to WR-28.
Where are your feed systems used?
In satellite communication, earth observation, deep space missions, radio astronomy and radar. Our products have worked in satcom systems and space exploration tasks.
What quality standards do you follow?
The factory works to a written Quality Manual and Quality Procedure based on ISO 9001:2015. Products meet RoHS requirements, and every product has a one-year warranty.
Can you build a feed system to our own drawing?
Yes — that is most of our work. Machining, bending, brazing, plating and testing are all done in-house, including RF checks in our testing lab and on-site hybrid anechoic chamber.
How do I get a quote?
Email your frequency band, polarization, dish size and interface to sales@dolphmicrowave.com, or call +86 29 8881 0979. You will get a technical proposal and a price.
What to Send Us
Send These 6 Details for a Fast Quote
The more of these you include in your first email, the faster our engineers can answer. Don’t have all of them? Send what you have — we will ask about the rest.
1
Frequency band and bandwidth
For example: Ku-band receive 10.7–12.75 GHz.
2
Polarization
Linear or circular, single or dual.
3
Dish size and type
Diameter, f/D ratio, or just the antenna model you use.
4
Power level
How much transmit power the feed must handle.
5
Interfaces
Flange types, coaxial connectors, and any space limits.
6
Quantity and timing
How many sets, and when you need them.
Contact
Get Your Feed System Quote
Send your band, polarization and dish size. Our engineers will reply with a technical proposal and a price — usually the same week.
Dolph Microwave · FengHuiNan Road NO.34, High-Tech Zone, Xi’an, China · sales@dolphmicrowave.com
