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RF / Microwave Filters, Diplexers & Duplexers
Manufacturers & Services

The companies listed here can supply your needs for any type of filter. They provide not only a stock of off-the-shelf models, but can also design and manufacture custom models for meeting specialty selectivity, group delay, insertion loss, form factor, power handling, or other unique parameters.

Everyone is clear on what a filter is, but there exists a lot of confusion over what is the difference between a duplexer and a diplexer. As you might expect, there are a lot of opinions - even between manufacturers. Traditionally, duplex communications implies the ability to transmit (Tx) and receive (Rx) on the same channel simultaneously. doing so requires a means of separating the transmit and receive paths in a manner rendering them independent of each other, i.e., isolation. Thus, a duplexer is used. One method is to use a circulator for routing signals from the transmitter to the antenna while routing singles from the antenna to the receiver. If the Tx and Rx operate at different frequencies, the job can be accomplished by a set of filters with a common feed point. A diplexer is usually thought of as a set of filters, again with a common feed point, that is used to combine or split signals travelling to or from an antenna, respectively, while providing isolation between the two independent paths. If more than two independent paths are required, the name for both usually changes to a common term: multiplexer.

Filter, Diplexer & Duplexer Design Books     Filter Design Data

My policy is to only list companies that actually manufacture product or offer services related to the page title subject. Product distributors and sales representatives are not listed (they have their own page). This helps guarantee that each listing offers a unique product or service. NOTICE: I am no longer adding hyperlinks due to so many companies asking to be removed because of some issue with Google Statistics. Your best bet is to use a search engine to find company websites directly. If you are interested in advertising, please visit my Advertising information page.
Please click here to visit KR Electronics.KR Electronics
Avenel, NJ
Tel:  (732) 636-1900
KR Electronics connectorized filtersFor over 40 years KR Electronics has designed and manufactured high quality filters for the commercial and military markets.

KR Electronics manufactures all filter KR Electronics SMT filterstypes and individually synthesizes filters for special applications. State of the art computer synthesis, analysis and test methods are used to meet the most challenging specifications.
Custom & Standard Filters
Low Cost & High Performance
Linear Phase
Phase Matched
Coils & Transformers
Highpass & Notch
Surface Mount
Fast Response
DC to 9 GHz
Root & Full Cosine

KR Electronics logoKR Electronics ISO certificate
ISO 9001:2008 Certified
Prototypes to Production
J-STD-001 Certified Operators
Click here to visit the Networks International websiteNetworks International Corporation (NIC)
Overland Park, KS
Tel: 913-685-3400
NIC is a leading manufacturer of custom RF & Microwave Filters and Assemblies. For over 20 years, we have been a trusted partner for military, commercial & space solutions. NIC headquarters is located in Overland Park, KS with additional sales and manufacturing operations in Washington, DC and India. NIC is certified as a Small Disadvantaged Business (ISO 9001:2000)
Networks International Corp. (NIC) Filters
 • Miniature Lumped Element
 • Combline & Interdigital
 • Crystal        • Ceramic
Networks International Corp. (NIC) RF Amplifier Assemblies
RF Assemblies
 • Filter/Limiters
 • Switched Filter Banks
 • Radar Systems   • RF Modules
 • Filter/Amplifiers  • Phase Shifters
 • Diplexers           • Multiplexers
Networks International Corp. (NIC) Crystal Oscillators
Crystals / Oscillators
 • Discriminators (455 kHz to 160 MHz)
 • TCXOs and VCTCXOs
 • Surface Mount Crystals
      (1.8 MHz-200 MHz)
Space Qualified Products
























Skyworks Wireless Connectivity Products Skyworks Solutions
Woburn, MA / Worldwide
Contact Us
Skyworks product selection guides
Selection Guide
Skyworks Solutions is an innovator of high performance analog semiconductors. Leveraging core technologies, Skyworks supports automotive, broadband, wireless infrastructure, energy management, GPS, industrial, medical, military, wireless networking, smartphone, and tablet applications. See the list below for our extensive line of products for the microwave and wireless industries, or click on the Selection Guide.
 • Cellular
 • WiFi Connectivity
 • Wireless Infrastructure/
    Femtocell Power Amplifiers
 • Smart Energy-Connected
    Home and Automation
 • Broad Market LNAs and
 • Low Noise Transistors
 • Driver/Linear Amplifiers
 • Gain Block
 • Variable Gain Amplifiers
Circulators / Isolators
Front-End Modules
 • Cellular
 • WiFi Connectivity
 • Smart Energy-Connected
    Home and Automation
Mixers Modulators / Demodulators
OptoCouplers OptoIsolators
Power Management
RF Passives
Please click here to visit JQL Electronics. JQL Electronics, Inc
Buffalo Grove, IL
Phone: 1-888-236-9828

Technology on the Move
JQL Electronics specializes in isolator and circulator designs and production. Over the past few years, JQL has expanded its technical capability in product development. Our engineering and technical support team has gained extremely valuable experience in designing products that can meet both high performance requirements and aggressive cost targets. Along with our sales team who works with customers closely to understand their needs, our design team consistently works to realize our customers' vision and deliver the best solutions. JQL also recognizes new industrial trends and the proactively develops new products and solutions to meet those new directions.
Microwave Isolators & Circulators
300 MHz ~ 120 GHz, up to 250 W
 Coaxial  Drop-In  Surface Mount
 Microstrip  Waveguide  Iso-Adapters
Other Microwave Components
 Power Dividers  Power Combiners
 Ceramic Filters  Directional Couplers
 Power Supplies  Power Transformers
 Ferrite Garnet  Waveguide to Coax Adapters
























Palm City, FL
Electro-Photonics LLC is a global supplier of RF & Microwave components. Our products include SMT hybrid couplers, wire bondable passive components, coaxial products, test fixtures and very useful test boards for evaluating components. The Electro-Photonics team can support your small R&D design requirements with RF & Microwave test fixtures and save you valuable design and characterization time.
• Passive RF Components
   -  RF & microwave amplifiers
   -  Wire-bondable quartz spiral inductors
   -  Wire-bondable single-layer capacitors
   -  RF & microwave power dividers
   -  Coaxial cable assemblies & connector adapters
   -  90° SMT hybrid couplers
   -  Ceramic RF & microwave filters
   -  Thin film sub-mounts & mounting tabs
• Build-to-Print Services
   -  Alumina, beryllium oxide, Al nitride, quartz, CVD
   -  MMIC package design
• Custom Evaluation Boards
   -  Evaluation boards per manufacturers' layouts
   -  Layout optimization
   -  SOLT de-embedding
Please click here to visit the NuWaves Engineering website.NuWaves Engineering
Middletown, OH
Tel: (513) 360-0800
NuWaves Engineering is a premier supplier of Radio Frequency (RF) Systems, Subsystems, RF Products and Engineering Design Services designed to customer requirements. We are a turnkey provider for RF and Microwave communication custom designs with full project management and design responsibilities; taking ownership from the conceptual idea to production.

Design / Consulting Services

 • Low Noise Designs

Prototype Development

 • Reliability Analysis

Distribution Systems

 • RF Amplifiers

Microwave Techniques

 • Site Surveys

System Integration


 • Antennas

Telemetry Transmitters

 • RF Tuners

Bi-Directional Amplifiers

 • Up/Dn Converters

Frequency Modulators

 • Low Noise RF Front
   End Amplifiers

Custom Analog and
   RF Filters

 • Complete RF and Wireless Data Transceivers

























Aeroflex KDI | aeroflex.com/ams/kdi-rp/micro-kdi-rp-prods.cfm
Individual filter and multi-function assemblies for wireless base station front ends, point-to-point to microwave radios, amplifier, and other commercial applications.

AKON | akoninc.com
408-432-8039 | San Jose, CA
Microwave amplifiers 0.5 to 20.0 GHz, power dividers and gain (slope) equalizers 1.0 to 18.0 GHz, converter assemblies 2.0-20.0 GHz, filter banks and switch filter banks 2.0-18.0 GHz, discriminators.

Amplitronix | amplitronix.com
714-918-4752 | Costa Mesa, CA
Manufacturer of high quality RF and IF Surface acoustic Wave (SAW) filters, resonators, and Voltage Controlled Oscillators (VCO).

antennas.us | antennas.us
954-0975-2712 | Margate, FL
Antennas for military, mobile radio, GPS, EMS, satellite/terrestrial, ISM, WLAN/Wi-Fi/WiMax, Ham, AM/FM/satellite radio. Cable assembly, connectors, diplexers & filters, software, measurement services.

AVX | avx.com
843-946-0414 | Myrtle Beach, SC
Capacitors, thin film directional couplers, Z-chip combo R&C impedance matching surface mount chip, ESD/surge protection, EMI/RFI feedthrough filters, AVX SPIMIC capacitor calculation, connectors - PCB, rack-and-panel, DIN, coaxial/RF, filters, resistors.

Bartley Machine & Manufacturing | qfilterproducts.com
978-388-0085 | Amesbury, MA
Frequency programmable active bandpass filters designed to eliminate all adjacent channel interference in applications up to 2GHz. No insertion loss - programmable gain.

Bree Engineering | breeeng.com
760-510-4950 | San Marcos, CA
Standard SMT packages, data link, low profile surface mount LC, PCB Mounted LC, combline, non-reflective, High power low-pass, image reject combline filters, GPS diplexers, GPS diplex band splitters, highpass/lowpass diplexers, and more.

Cernex | cernex.com
408-541-9226 | Sunnyvale, CA
Amplifiers, antennas, couplers, isolators, circulators, filters, diplexers, oscillators, noise sources, switches, phase shifters, transition & adapters, mixers, waveguide products, attenuators, terminations, detectors, subsystems.

Channel Microwave | channelmicrowave.com
805-482-7280 | Camarillo, CA
Coaxial and waveguide isolators, circulators, ISO-adapters, integrated assemblies, filters, terminations.

Ciao Wireless | ciaowireless.com
805-389-3224 | Camarillo, CA
Broad selection of amplifiers for multi-octave, octave & ½-octave, broadband, LNAs, and RF limiting. Replacement amplifiers for anything previously or currently made by JCA Technology, Cougar (connectorized versions), Avantek, WJ, CTT, Celeritek, Amplica, among others, but at a much quicker delivery. Also manufacture radial combiners and space qualified filters. Environmental screening services available.

ClearComm Technologies | clearcommtech.com
410-860-0500 | Salisbury, MD
Base station, delay filters for feed-forward amps, diplexers, custom up to 40 GHz, waveguide filter products 7-40GHz; cavity filter products include transmit and receive filters as well as duplexers and multiplexers covering the frequency range of 300 MHz to 6.0 GHz.

CMT Filters | cmtfilters.com
916-631-4363 | Pollock Pines, CA
Cavity and waveguide filters, duplexers and filter-based assemblies for the wireless, commercial and military marketplaces.

Coilcraft | coilcraft.com
800-322-2645 | Cary, IL
RF, power inductors, EMI/RFI filter products, xDSL magnetics, transformers.

Coleman Microwave | colemanmw.com
800-563-3449 | Edinburg, VA
Diplexers, low pass, band reject, band pass, waveguide, coaxial, high power, harmonic, miniature filters.

CommsAudit | commsaudit.com
+44 (0)124 225 3131 | Cheltenham, England
RF and digital equipment and subsystems for Defence, Telecommunications, Military, and broadcast communications applications. Frequency range 10 kHz to 60 GHz including digital control and digital signal processing (DSP). COTS, quadrature I/Q Receivers, multi-channel receiver systems, RF switching matrix, RF multicouplers, antenna matrices & multicoupler distribution units, masthead amplifiers, RF filters.

Continental Microwave & Tool (now Cobham)
603-775-5200 | Exeter, NH
Antennas, solid state switches, attenuators, microwave switch filter assemblies, high power switches, PIN-diode control components, and GaAs microwave devices, waveguide components, assemblies and subsystems, integrated assemblies.

Corry Micronics | cormic.com
724-940-7556 | Corry, PA
Dielectric resonators, bandpass filters, LC filters, VCOs, PLLs, patch antennas, power dividers, connectorized lumped element power dividers, directional couplers, isolators/circulators, high power hybrids, diplexers & multiplexers, attenuators, switches, cavity filters, waveguides, standard gain horn antennas.

CTS Corporation | ctscorp.com
574-293-7511 | Elkhart, IN
Bluetooth, ceramic duplexers, filters, terminators, DIP switches, modules (synthesizer, frequency translator, jitter attenuation, timing, clock generators, VCO's, high frequency VCXO's, VCSO's, IF filters), oscillators.

Delta Microwave | deltamicrowave.com
805-240-1044 | Oxnard, CA
Filters, diplexers, multiplexers, filter/amplifiers, variable attenuators, integrated assemblies, power combiners, waveguides. Product frequencies from 1 kHz to 50 GHz with RF power handling up to 25 kW.

Eastern Wireless TeleComm, Inc | ewtfilters.com
410-749-3800 | Salisbury, MD
RF & Microwave filters, duplexers, & multiplexers to 40 GHz for all commercial, military, & wireless, applications.

Emicon Corporation | emiconcorp.com
915-590-0795 | El Paso, TX
Custom manufacturer of coils, powerline filters, signal line filters, EMI filters, low pass filters and inductors.

EMR Corporation | emrcorp.com
800-796-2875 | Phoenix, AZ
RF peripherals devices from 30 MHz to 2.8 GHz. Design, manufacture and systems' engineering for RF isolators, amplifiers & BDAs, filters - band pass & band reject, mobile & base station duplexers, combiners - cavity ferrite & hybrid ferrite, RX multicouplers and accessories including LNAs.

EPCOS | epcos.com
800-689-3717 | Iselin, NJ
Capacitors, SAW, inductors/EMC components, nonlinear resistors, ferrite components, surge

Eyal Microwave Industry | eyal-emi.com
972-9-7493184 | Israel
PIN switches, diodes, high power switches, limiters, power dividers, phase shifters, switched bank filters, converters.

Filtek, Inc | filtek.com
520-398-2856 | Tubac, AZ
Bandpass, lowpass, highpass and bandstop filters, power dividers, filters, couplers and beam forming networks.

Filtel | filtel.com
450-455-6082 | Canada
Couplers, power dividers, isolators, coaxial & waveguide circulators.

Filtronetics | filtro.net
816-231-7375 | Kansas City, MO
Leading supplier of custom IF, RF, Microwave, EMI(military) & Front End filters. Filter types include LC, crystal ceramic, SAW & microwave from DC to 10 GHz . Oscillators and crystals are available including TCXOs & VCXOs. Filtronetics Inc has been providing solutions to for 35 years and is ISO-9001:2000 certified.

Filtronic Solid State | (now Teledyne Microwave)
650-962-6944 | Mountain View, CA
Synthesizers, YIG filters & oscillators, phase locked and free running DRO's, transceivers, converters, ferrites, microwave integrated assemblies, BAW delay lines.

FSY Microwave | (now Spectrum Microwave)
888-553-7531 | Columbia, MD
RF & microwave filters to 40 GHz. LC | cavity | ceramic | waveguide types. 20 years of design experience able to meet your custom specification.

Guided Wave Technology | guidedwavetech.com
+45 20 88 58 30 | Denmark
Filter and Coupling Matrix Synthesis Software. Get an overview of main filter parameters in seconds, without complex circuit models and modeling. Our Coupling Matrix Synthesis™ software facilitates synthesis of N+2 coupling matrices for Chebyshev bandpass filtering functions, with arbitrary finite-position transmission zeroes. The software also facilitates coupling matrix synthesis through topology matrix definition. It gives a fast and accurate overview of insertion loss, isolation, group delay and coupling coefficients versus filter order, return loss and transmission zero positions. The software allows placement of complex transmission zeroes, which opens up for group delay shaping and analysis.

ILSI America | ilsiamerica.com
888-355-4574 | Reno, NV
Frequency control products - crystals, data clock oscillators, VCXO, VCO, TCXO, TCVCXO, OCXO, crystal filter, saw filter synthesizers.

Integrated Microwave | imcsd.com
619-259-2600 | San Diego, CA
Bandpass, highpass, lowpass filters, ceramic resonators.

Ion Beam Milling, Inc | ionbeammilling.com
603-644-2326 | Manchester, NH
Since 1982 has manufactured thin film circuits for use in the microwave and photonics industries. Dry etch ion beam milling process to ensure a high level of repeatability. An array of standard products are ready to ship and we can create custom circuits to match your drawing. Ion Beam Milling also specializes in services. We can offer photolithography, milling, and/or dicing services to meet your needs. ISO 9001:2000 qualified.

Johanson Technology | johansontechnology.com
805-389-1166 | Camarillo, CA
LTCC chip antennas for Bluetooth, WLAN, 2.45 GHz ISM band, ceramic filters, diplexers, baluns, inductors, capacitors, couplers, laser trim, JTIsoft® modeling software.

K&L Microwave | klmicrowave.com
410-749-2424 | Salisbury, MD
Filters, suspended substrates, waveguide.

KDI-Triangle | (now Aeroflex-KDI)
973-887-8100 | Whippany, NJ
Aeroflex | KDI-IP filter products for RF and Microwave filters are individual filter and multi-function assemblies for wireless base station front ends, point-to-point to microwave radios, amplifier, and other commercial applications. These include cavity types with metal or ceramic resonators, & printed filters such as bandpass, lowpass, bandreject, duplexer, triplexer & multiplexer.

KMW | kmwinc.com
800-832-0569 | Cerritos, CA
AMBA (Active Multi Beam Antenna System), amplifiers, arrestors, attenuators, combiner/dividers, connectors, couplers, duplexers, filters, isolators/circulators, phase shifters.

KOA Speer Electronics | koaspeer.com
814-362-5536 | Bradford, PA
Resistors, capacitors, 3-terminal EMI/RFI filters, circuit protection, inductors, integrated components.

L-com Global Connectivity | l-com.com
800-341-5266 | North Andover, MA
Manufacturer of cable assemblies, connectors, antennas, amplifiers, and other and other connectivity devices

Lark Engineering | larkengineering.com
949-240-1233 | San Juan Capistrano, CA
Lowpass, highpass, bandpass filters, diplexers.

Linwave Technology Ltd | linwave.co.uk
+44 1522 681811 | Lincoln, UK
RF and microwave design and manufacturing company with specialist knowledge in module and sub-system design. Our experience encompasses the consumer, industrial, automotive and defense market sectors. SATCOM BUC, SSPA, Military microwave sub modules.

Lattice Semiconductor | latticesemi.com
503-268-8000 | Hillsboro, OR
FPGA, FPSC, CPLD, SPLD, digital interconnects, programmable analog ICs, automotive temperature devices, military devices, programmable logic development tools, advanced packaging.

Lorch Microwave | lorch.com
800-780-2169 | Salisbury, MD
Cavity, waveguide, discrete, tunable, ceramic, wireless, tubular filters, integrated assemblies, mixers, phase comparators, phase shifters.

LUXCONN Technology | luxconn.co.kr
82-2-2026-7500 | Seoul, Korea
Manufactures RF connectors, coaxial cable, and passive components including power splitters, power dividers, directional couplers, surge arrestors, terminators, duplexers, antennas.

Maruwa America | maruwa-g.com
310-792-1105 | Torrance, CA
Ceramics capacitors, VCOs, resonators, multilayer ceramic substrates (HTCC/LTCC), thin-film substrates, EMI filters.

Maxim Integrated Products | maxim-ic.com
800-998-9872 | Sunnyvale, CA
Amplifiers, comparators, analog switches, multiplexers, analog filters, linear and mixed-signal integrated circuits, power supplies, battery management, RTCs, clocks, oscillators, delays, counters, fiber optic ICs.

MCLI | mcli.com
800-333-6254 | St. Petersburg, FL
Power dividers, couplers, isolators, circulators, waveguide components, oscillators, filters, hybrids, attenuators, switches, terminations, amplifiers.

Mercury United Electronics | mercuryunited.com
909-466-0427 | Rancho Cucamonga, CA

Clock oscillators, VCXO, TCXO, OCXO, low EMI spread spectrum clock oscillators, leaded and surface mount crystals, monolithic crystal, leaded and surface mount filters, timing modules, GPS frequency references.

MicroAxiom | microaxiom.com
888-407-9626 | Poway, CA
Leading the way in filter innovation. Manufacture of high power, cavity, combline, interdigital, lumped element, LTCC modules, switches, amplifiers, switch filter banks, and GPS modules.

MicroLab/FXR | microlab.fxr.com
973-992-7700 | Livingston, NJ
Attenuators, bias tees, couplers, dc blocks, coaxial junctions, terminations, low pass filters, power splitters/dividers, tuners & line stretchers, waveguide dummy loads.

Microwave Components and Systems, Inc | mcsproducts.com
508-480-0106 | Marlboro, MA
Produces a wide range of standard and custom waveguide and coaxial components and systems including power combiners, filters, multiplexers, pressure windows, terminations, couplers, hybrids & transitions; custom designs, small quantities available, quick delivery.

Microwave Filter Company, Inc | microwavefilter.com
800-448-1666 | East Syracuse, NY
1 MHz to 50 GHz, HP, LP, BS, BR, multiplexer, tunable notch, high power, subminiature, waveguide, microstrip, lumped element.

Microwavefilters | microwavefilters.it
+39(0)292162703 | Pioltello, Milano, Italy
Manufacturing of RF components including waveguide band and channel filters, duplexers, couplers, tapers, adapters, flanges, housings and cold plates for RF bridges, and also offers offering also electric testing, project consulting and problem solving.

Microwave Resources, Inc | microwaveresourcesinc.com
909-627-4125 | Chino, CA
Amplifiers, attenuators, circulators, isolators, frequency multipliers, waveguide couplers, mixers, detectors, filters, pin switches, adapters.

Mini-Circuits | minicircuits.com
718-934-4500 | Brooklyn, NY
Attenuators, baluns, bias tee, cables (test quality), chokes, DC blocks, mixers, amplifiers, filters, line stretchers, modulators, oscillators, power combiners | couplers | splitters, switches, terminations, transformers. Surface mount, connectorized. Application (app) notes.

MtronPTI | mtronpti.com
800-762-8800 | Yankton, SD
Manufactures a complete range of frequency control products for commercial and military applications, including crystal resonators, OCXOs, TCXOs, VCXOs, monolithic and discrete crystal filters, LC filters, and RF subassemblies.

Murata Electronics | murata.com
800-241-6574 | Smyrna, GA
Chip multi-layer (1.0 2.5 GHz), chip dielectric (2450 GHz, Bluetooth), surface mount capacitors, thermistors/resistors, coil (inductors)/delay lines, noise suppression products/EMI filters, resonators, piezoelectric sound components, coaxial connectors, antenna/duplexers, isolators/circulators, PLL modules, VCOs, TCXO, RF diode switches, DC-DC converters, sensors.

Narda Microwave East | nardamicrowave.com
Filters, isolators, power combiners, couplers, RF mechanical switches and PIN diode switches.

Nortec RF | nortec-rf.com
856-793-9255 | Mount Laurel, NJ
RF/microwave power combiners/dividers, unidirectional and bidirectional couplers, hybrid couplers, filters, and power amplifiers. New products added on regular basis.

NTK Technologies | ntktech.com
408-727-5180 | Santa Clara, CA
Packages - LTCC, LCC, CPGA, AlN, CGFP, FP, side braze hybrid, thin film, flip chip, organic flip chip, microwave. Ceramic directional couplers, filters, diplexers, antennas, switch modules, resonators and ultrasonic sensors.

Omniyig | omniyig.com
408-988-0843 | Santa Clara, CA
Manufacturer of band reject, bandpass Yig filters, Yig oscillators and Yig multipliers with and without integrated analog or digital drivers, comb generators with and without integrated input power amplifiers, various types of detectors and limiters.

Oscilent Corporation | oscilent.com
949-252-0522 | Irvine, CA
Oscillent refuses to pay their final bill to RF Cafe.

Panasonic | panasonic.com
201-348-7000 | Secaucus, NJ
Surface mount capacitors, directional couplers, antenna switches, SAW filters, attenuators, power dividers, duplexers, transformers, inductors, coils, batteries.

Picosecond Pulse Labs | picosecond.com
303-443-1249 | Boulder, CO
Amplifiers, drivers, attenuators, baluns, transformers, bias tees, comb generators, custom pulse generators, DC blocks, driver/controller modules, ECL/PECL terminators, edge compressors, impulse forming networks, low-pass filters, power dividers, pulse generators, sampler modules TDR/TDT instruments.

Planar Monolithics Industries | pmi-rf.com
301-662-5019 | Frederick, MD
PMI designs, develops, manufactures, tests, and markets hybrid RF/microwave and monolithic integrated circuits (MIC/MMIC) and components hybrid MIC/MMIC supercomponents and subsystems.

Pole Zero | polezero.com
513-870-9060 | West Chester, OH
Modular digitally tuned RF filters and preselectors.

Q Microwave | qmicrowave.com
619-258-7322 | El Cajon, CA
Custom & standard filters, integrated microwave assemblies, design tools, lab support services.

Quasar Microwave Technology
(now The Waveguide Solution)
+44 (0) 1626 835255 | UK
Flexible twistable and rigid waveguides, flanges, pressure windows, power splitters, hot stand-by couplers, filters, diplexers.

Ray Micro Devices | raymicrodevices.com
717- 266-8666 | York, PA
State-of-the-art and highly scalable design and fabrication solutions for Microwave, Telecom and Satellite Communications. RMD's expertise lies in the development of hardware products for the 10-40 GHz spectrum.

RF Microwave Design Ltd | rfmicrowavedesign.com
+44 (0)1626 835269 | UK
Custom, semi-custom and standard passive microwave components. Diplexers, filters and antennas designed and tested. A complete design, development and validation service to the RF and microwave industry.

RF Monolithics, Inc. - RFM | rfm.com
800-704-6079 | Dallas, TX
Offers a broad range of wireless solutions, from comprehensive industrial wireless sensor networks to high performance RF components including SAW resonators, narrow band filters, RF and IF filters, oscillators, clocks & crystals, RFIC and SAW based radios, RF modules and standalone radios, M2M.

RLC Electronics | rlcelectronics.com
914-241-1334 | Mount Kisco, NY
Filters, couplers, coaxial switches, attenuators, power dividers, terminations, bias tees, DC blocks.

RS Microwave | rsmicro.com
201-492-1207 | Butler, NJ
Filters, multiplexers, subassemblies.

RTx Technology Co., Ltd | rtxtech.com
+82-31-743-6275 | South Korea
Filters, duplexers, multiplexers (ceramic/cavity), VCOs & PLL synthesizers, isolators & circulators, up/down converters,  combiners & dividers, directional couplers, SAW devices, attenuators, terminators.

Sage Labs - Filtronic
(now Spectrum Microwave)
508-653 0844 | Natick, MA
Power dividers, couplers, hybrids, filters, rotary joints, mixers, phase shifters.

Salisbury Engineering | (now Spectrum Microwave)
888-553-7531 | Delmar, DE
Custom integrated microwave assemblies, tuners, synthesizers, filters, reference oscillators, harmonic generators. Call to discuss with an engineer your microwave component or supercomponent needs.

Samsung Electro Mechanics | sem.samsung.com
408-544-5262 | San Jose, CA
Ceramic filters for base stations, repeater from 400 MHz to 5 GHz. Saw filters, VCOs, and TCXOs.

Sawtek | (now a division of TriQuint Semiconductor)
407-886-8860 | Apopka, FL
RF, IF filters, duplexers, base stations, wireless LAN.

Spectrum Control, Inc | spectrumcontrol.com
866-281-0989 | Fairview, PA
Connectors - circular, D-subminiature, DIN, terminal blocks, plugs and jacks, coaxial/RF. EMI/RFI filtered feedthrough connectors

Syfer Technology | syfer.com
+44 1603 723300 | Norfolk, Suffolk,  England
Syfer has 25+ years experience in manufacturing ceramic capacitors, both SMD and thru-hole EMI filters and EMI Power Filters.

Tai-Saw Technology | taisaw.com
886-3-4690038 | Taiwan
RF, IF, crystal filters, SAW filters, crystal resonators, crystal oscillators, VCOs, TCXOs.

TDK | tdk.com
516-535-2600 | Garden City, NY
Filters, multi-layer ceramic capacitors, inductors, EMC components, LAN components, ferrite cores, amorphous cores, transformers, magnets, magnet applied products, piezoeletronic products, delay lines, sensors, power supply, RF components, RF modules, and more.

Teledyne KW Microwave | teledynekwmicrowave.com
858-842-2993 | Poway, CA Filters, multiplexers, diplexers, multipliers, solid state switches, switch filters, low noise amplifiers, preamplifiers, coaxial switches, ferrite circulators and isolators, integrated subsystems covering the frequency range 5 MHz to 40 GHz.

TELSA | telsasrl.it
+390354876000 | Osio sotto (BG) Italy
Basestation antennas, combiners, couplers, circulators, filters, duplexers, power splitters and components for the air traffic control, private mobile radio, cellular, wireless communications and tactical markets.

Tiger Micro-Electronics Institute | tiger-mw.com
510-635-4270 | Oakland, CA
Filters, couplers, power divider/combiners, mixers, modulators, switches, isolators, circulators, phase shifters.

Token Passive Components | token.com.tw
+886-2-2981 0109 | Taiwan
Ceramic resonators, filters, dielectric patch antennas, resistors.

Toko America | tokoam.com
847-297-0070 | Mt. Prospect, IL
Filters, baluns, inductors, antennas, semiconductors, amplifiers, A/D converters.

Trans-Tech | trans-techinc.com
301-695-9400 | Adamstown, MD
Resonators, bandpass filters, garnets, ferrites, dielectrics, substrates.

Trilithic | trilithic.com
800-344-2412 | Indianapolis, IN
Attenuators, filters, switches, terminations, emergency alert systems.

Triquint Semiconductor | triquint.com
503-615-9000 | Hillsboro, OR
Wireless, telecom and millimeter amplifiers, GaAs integrated circuits and transistors. SAW filters.

TTE | tte.com
800-776-7614 | Los Angeles, CA
Bandpass, lowpass, highpass filters, diplexers, multiplexers, cases, balun, isolation & matching transformers.

Tusonix | tusonix.com
520-744-0400 | Tucson, AZ
EMI/RFI filters, surface mount EMI filters, variable trimmer capacitors, filtered terminal blocks, custom EMI filter plate assemblies, ceramic disc capacitors.

Ultra-Crea Oy | ultra-crea.fi
+358 50 444 9100 | Finland
Specializes in the design, development and manufacture of custom designed/specialty antennas and RF filters from 10 MHz to 6 GHz.

US Microwaves | usmicrowaves.com
408-970-9680 | Santa Clara, CA
Supplies custom and standard microwave thin film circuits, thin film components and semiconductors for analog and digital multi-chip module circuits, medical, military and commercial RF & microwave, fiber optic and optoelectronics, satellite, video and wireless communication applications.

UTE Microwave, Inc | utemicrowave.com
732-922-1009 | Asbury Park, NJ
Circulators, isolators, ISO-adapters, filters.

Vanlong Technology | vanlong.com
262-534-2888 | Rochester, WI
SAW resonators, SAW filters, ceramic products, oscillators.

Vectron International | vectron.com
888-328-7661 | Hudson, NH
Crystals, oscillators, SAW filters.

Ventronics USA | ventronicsinc.com
908-272-9262 | Kenilworth, NJ
Resistors, varistors, thermistors, diodes, rectifiers, quartz crystals, oscillators, filters, switches, coils, EMI filters, microcircuits, capacitors, battery packs, inductors, batteries, transformers, LED/LCD, line cords, piezoelectric devices, cable assemblies, relays, blowers, fans, power supplies, thermal cutoffs, PCBs, potentiometers, delay lines, transducers, chokes.

Wainwright Instruments | wainwright-filters.com
+49 (0) 8152-918230 | Germany
Lowpass, highpass, bandpass, notch filters, diplexers & multiplexers.

Ye Eun Tech | yeeuntech.com
+82-31-459-0960 | Gunpo, Kyunggi, Korea
Coaxial (RF) cable assemblies, adapters, filters, power splitters, and multiplexers.

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