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Attenuators, Bias-Ts, DC Blocks, & Terminations
(Fixed | Variable | Programmable)
Manufacturers & Services

The companies listed here can supply your needs for any type of attenuator, be it fixed, variable, or programmable. They provide not only a stock of off-the-shelf models, but can also design and manufacture custom models for meeting specialty decibel values, form factor, power handling, or other unique parameters.

One important thing to keep in mind is that specified values for attenuation are only guaranteed at 50+j0 ohms, or whatever the characteristic impedance of the attenuator model happens to be (50 and 75 ohms most common). The farther away from the characteristic impedance the connected ports are, the farther from the spec the attenuation value will be.

I provide an online attenuator calculator here.      Attenuator Design Data

everything RF
everything RF

Test Equipment - everythingRFeverything RF is a product discovery platform for RF & Microwave Products/Services. We currently have 230,720 Products from more Antennas - everythingRFthan 1,040 Companies across 225 Categories in our database and enable engineers to search for them using our customized parametric search tool.

Like Our Name Says, We're "everything RF"

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 • Test Equipment, Amplifiers, Mixer,
     Filters, Circulators, Couplers, Diodes,
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     Hardware, Antennas, Attenuator, Connectors,
     Phase Shifter, Power Dividers, Terminations,
     Isolators, Probes, RF Switches, Transistors
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     Network Analyzers, Circulators, Waveguide...

MECA Electronics
MECA Electronics
Denville, New Jersey
866-444-6322

MECA Electronics V-Line componentsSince 1961, MECA Electronics has designed and manufactured an extensive line of RF / Microwave components with industry leading performance including Attenuators, Directional & Hybrid Couplers, Isolators / Circulators, Power Dividers / Combiners, RF Loads, DC Blocks, Bias MECA electronics AttenuatorsTees and Adapters & Cables. MECA has long been the 'backbone' of high performance wired and air-interfaced networks such as in-building, satellite, radar, radio, telemetry, mobile radio, aviation & air traffic communications.

* Full Line of Low-PIM Products Available *

     • Power Combiners & Dividers
      • Directional & Hybrid Couplers
       • Fixed, Variable, and Stepped Attenuators
       • Circulators & Isolators
      • Coaxial Cables & Adapters
     • Integrated D.A.S. Equipment

Centric RF
Centric RF
Allen, Texas
800-399-8691

We're a company offering from stock various RF and Microwave coaxial components, including Attenuators, Adapters, Cable Assemblies, Terminations, Power Dividers, and more. We believe in offering high performance parts from stock at a reasonable cost. Our parts operate in the frequency ranges of 0-110 GHz, and at power levels from 0.5-500 watts.

We Are Shipping Parts Currently in Inventory

  • Attenuators & Terminations

   • Coaxial Connectors & Adaptors

   • Coax Cable and Cable Assemblies

   • Power Dividers & Combiners

   • Connector Torque Wrenches & Tools

  • Isolators

Order today, ship today!
ISOTEC
ISOTEC
Seoul, Korea | Great Neck, NY
516-780-2766 (U.S.)
82-2-2040-6176 (Worldwide)

Since 1996, Isotec has designed, developed and manufactured an extensive line of RF/Microwave connectors, RF components and filters, including low-PIM options, for wireless service providers, etc.

Products:  (Low-PIM Option)

 • RF Coaxial Connectors - SMB, MCX, MMCX, N,
       SMA, TNC, 7/16, 2.92 mm, etc.

 • RF Coaxial Cable Assemblies - Flex,
      Semi-rigid, Low loss

 • RF Components - Attenuators, Terminations,
       Surge arrestors

 • RF Power Couplers & Combiners

 • RF Filters - Cavity, Ceramic, LC

Aeroflex KDI | 973-887-5700 | Whippany, NJ
Attenuators, phase shifters, digital time delay units, LNA's, switches, modulators, dividers combiners & couplers, ferrites, levelers, duplexers, amplifiers, resistors, terminations.

Bird Electronic Corp | 440-248-1200 | Cleveland, OH
High & low power, DC - 3 GHz, fixed, broadcast, wireless, filters, miniature coaxial couplers, combiner/divider 50 Ohm selector switches.

BroadWave Technologies | 317-346-6101 | Franklin, IN
Adapters, attenuators, power combiners, power dividers, power couplers, terminations, high power, 1-1500 Watts, connectors, adapters.

Centric RF | 800-399-6891| Allen, TX 
Stocks various RF and microwave coaxial componentsluding attenuators, adapters, cable assemblies, terminations, power dividers, and more.

Channel Microwave (now Smiths Microwave) | 805-482-7280 | Camarillo, CA
Coaxial and waveguide isolators, circulators, ISO-adapters, integrated assemblies, filters, terminations.

Charter Engineering | 727-549-8999 | Largo, FL
Electromechanical switches, attenuators, couplers terminations, isolators, circulators, power dividers.

Corry Micronics | 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.

DS Instruments | 805-242-6685 | San Luis Obispo, CA
RF & microwave test equipment and specialized hardware in smaller form-factors and at lower cost than previously available. All hardware design, firmware development, and assembly is based in the USA. Current offerings include tracking and microwave signal generators, microwave digital step attenuators, and in the near future a compact signal power meter and frequency counter capable of reaching nearly 8 GHz.

Dynamic Signal (now National Instruments)
| 800-982-4064 | Medfield, MA
RF connectors: BNC-SMA-SMB-F-N-UHF-MCX-TNC; Custom cable assemblies: mix and match lengths/connectors; Adapters | terminators | attenuators; Single mode & multimode fiber optic cables: LC-SC-ST-MTRJ; Bulk coax cable: RG6, RG8, RG58, RG59, RG142, RG213, RG223, RG400; cable tools & accessories.

EMC Technology Florida RF Labs | 800-544-5594 | Stuart, FL
Coax, cable, hybrid couplers, thin film resistive products.

FM Ingenierie (now Ormelabs) | +33 951486698 | France
Programmable attenuators, frequency synthesizers, RF filters, ISM-band ID systems, custom design, Smith Chart software.

Herley | 717-735-8117 | Lancaster, PA
Attenuators, modulators, power dividers, oscillators, synthesizers, phase shifters, switches.

High Sierra Microwave | 530-644-3393 | Camino, CA
Designs and builds PLL signal sources, up/down converters, low noise amplifiers, and comb marker generators (weak signal sources). Also provides RF/microwave test/measurement services, such as phase noise measurements to 40 GHz.

Hittite Microwave Corp
978-250-3343 | Chelmsford, MA
Amplifiers, attenuators, frequency multipliers, mixers, modulators, prescalers, switches, VCOs.

Integrated Device Technology (IDT)
800-223-1366 | San Jose, CA
System-level solutions that optimize applications with products in RF, timing, wireless power transfer, serial switching, interfaces and sensing solutions are among the company's broad array of complete mixed-signal solutions for the communications, computing, consumer, automotive and industrial segments. These products are used for development in areas such as 4G infrastructure, network communications, cloud datacenters and power management for computing and mobile devices.

Instruments for Industry (IFI) | 631-467-8400 | Ronkonkoma, NY
Amplifier configurations such as tetrode tubes, TWTs, klystrons, and solid state devices. Standard horn antennas and TEM cells.

Ion Beam Milling | 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.

Isotec | 516-780-2766, USA | 82-2-2040-6176, Korea
Designs, develops and manufactures extensive line of RF/microwave connectors, cable assemblies, attenuators, terminations, couplers, filters, surge protectors, and LNAs. Low PIM designs available.

JQL Electronics | 888-236-9828 | Rolling Meadows, IL
Manufacturer of RF and microwave devicesluding filters, isolators & circulators, directional couplers, power divider/combiners, hybrid, termination and etc. Our R&D team provides outstanding services to quickly bring your product concepts into prototype, and turn the prototype into products.

Kete Microwave Electronics | +86-595-22597735 | China
Ferrite RF isolator & circulators, high power RF resistors & terminations, fixed & variable/step attenuators, multilayer High-Q chip ceramic& feedthrough capacitor (EMI filters), directional couplers, power dividers / combiners, 3dB hybrid couplers.

Link Microtek | 44 (0)1256 355771 | Basingstoke, Hampshire, UK
Horn antennas, rotary joints, OMTs, attenuators, TEM cells, filters, couplers, transitions, millimetre wave components, adaptors, terminations and custom waveguide assemblies. DC to 40 GHz.

Luxconn Technology | www.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.

M/A-COM (now Cobham) | 800-366-2266 | Lowell, MA
Developer and high-volume manufacturer of RF, microwave and millimeter wave semiconductors, components and technologies including diodes, semiconductors, transistors, passives, blocks, substrates. 

MicroLab/FXR | 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.

Micronetics (now Mercury Systems) | 603-883-2900 | Hudson, NH
Test equipment, noise sources, voltage controlled oscillators, switches, limiters, phase shifters, attenuators.

Res-Net Microwave
Res-Net Microwave
Clearwater, Florida
727-530-9555
Res-Net Microwave Chip Resistor

Res-Net Microwave Flange Termination

Res-Net Microwave has a complete line of precision RF & microwave components including attenuators, terminations, resistors, and diode detectors for commercial, military, and space applications. Products range from the small flange type to large 2,000 watt connectorized power attenuators and/or terminations at frequencies up to 26.5 GHz. In-house photo etch and laser trim capability. 

Res-Net Microwave High Power Attenuation  • Attenuators: Pass-Through, SMA,
       N, Chip, & Flange Attenuators
  • Resistors: Chip & Coaxial Rod,
        Power Flange, CVD diamond
  • Terminations: Chip & Coaxial Rod,
        Conduction-Cooled, Power Flange, Stripline
Res-Net Microwave Diode Detectors  • Diode Detectors: Zero-biased
        Schottky, 100 mW Input

Now offering 4-week lead times on standard products including: Attenuators, Resistors, and Terminations.

Skyworks Solutions
Skyworks Solutions
Woburn, Massachusetts
781-376-3000

Skyworks Solutions communications building blocksSkyworks Solutions, Inc. is empowering the wireless networking revolution. Our highly innovative analog semiconductors are connecting people, places and things spanning a number of new and previously unimagined applications within the automotive, broadband, cellular infrastructure, connected home, industrial, medical, military, smartphone, tablet and wearable markets.

Broad Product Portfolio for Markets Including:

    • Automotive            • Wireless Infrastructure
      • Connected Home        • Wearables
        • Consumer Electronics     • And more!

Skyworks Engineering CareersSkyworks is Hiring!

View our current openings for SOI
and RF Design Engineers today!
Careers at Skyworks

RF & Connector Technology (RFCT)
RF & Connector Technology (RFCT)
YoungTong Suwon Korea
+82-505-274-0002

Full solution services - not just selling goods. We pursue a management policy stressing technological advancement and quality assurance with "Zero Defects". From your very first contact, you will be supported by competent RF specialists, all of whom have several years of field experience in this industry, allowing them to suggest a fundamental solution and troubleshooting approach.

We Are Shipping Parts Currently in Inventory

  • Attenuators, Terminations & DC Blocks: Up to 300 W

   • Coaxial Connectors & Adaptors: SMA, N, BNC, TNC,
         MCX, MCX, 7/16, etc. In- and Between-Series

    • Coax Cable & Cable Assemblies: Flex & Semi-rigid

    • Power Couplers: 10 to 40 dB

   • Power Dividers & Combiners: 2-4-way, to 300 W

   • Surge Arrestors: Lightning protection

  • Antennas: Compact, Spring, Coil, GPS/DMB

VidaRF
vidaRF
Huntersville, North Carolina
877-777-8432

At VidaRF, the phrase Providing Simple Solutions for Complex Connections is more than just a slogan – it's a mindset, a mission, and a driving force behind everything we do. Our pledge is to design and distribute high performance, cost effective RF Microwave products to fit each customer's unique applications. Providing a high quality, reliable product is not only our responsibility – it is the primary factor in gaining our customer's confidence.

In-stock items ship within 24 hours.

Product Line

 • Attenuators & Terminations - 1 to 40 dB

 • Power Couplers - Directional & hybrid
       to 20 GHz
 • Power Dividers/Combiners - 2 through 16-way

 • Coaxial Connectors - All popular styles

 • Coaxial Adapters - In-series & between-series

 • Circulator & Isolators - 150 MHz - 40 GHz

Microtech | 203-272-3234 | Cheshire, CT
Waveguide rotary joints, bends, straight, twists, adapters, couplers, horns, terminations, tees.

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

Midwest Microwave (now Emerson Network Power) | 734-429-4773 | Saline, MI
Attenuators,  terminations, DC blocks, couplers, power dividers, equalizers, phase shifters, adapters, cable assemblies, connectors - SMA, BMA, N Type, 7 mm, 3.5mm, QPL/DSCC approved products, tools, gauges, guides.

Mini-Circuits
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.

Miteq | 631-436-7400 | Hauppauge, NY
Amplifiers, mixers, frequency multipliers, passive power components, solid-state switches, attenuators, power dividers, RF & IF signal processing components, oscillators, frequency synthesizers, integrated multifunction assemblies, fiber optic products, up/downconverters, test translators, IF/video equalizers, redundancy switchover units, video modulators and modems.

Nikkohm Co., Ltd | +81-176-53-2105 | Misawa, Aomori, Japan
Resistors, precision thin film, precision chip, RF termination, attenuator, power, TO220, TO247, TO126, wire wound, metal housed, current detect, shunt, thermopiles.

Pasternack Enterprises | 866-727-8376 | Irvine, CA
Amplifiers to 2 GHz, attenuators 1 - 1000 W DC - 40 GHz, circulators/isolators 1 - 26.5 GHZ w/SMA connectors, combiners/dividers 2 - 12 way 1 MHz - 18 GHz, couplers  low & high power 0.5 - 18 GHz, switches manual & diode DC - 18 GHz, terminations 1/2 - 100 W DC-40 GHz, waveguide 1.70 - 40 GHz.

Peregrine Semiconductor
858-731-9400 | San Diego, CA
Fabless provider of RFICs leveraging the company's patented UltraCMOS® technology, an advanced form of SOI that enables the design, manufacture and integration of multiple RF, analog and digital functions onto a single chip.

Planar Monolithics Industries | 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.

RCD Radiokomunikace | +420-466-415-755 | Česká Republika
Design, manufacture, and test high-quality RF components and systems - attenuators, couplers, dividers, filters, amplifiers. Custom RF or mechanical designs including high port-to-port isolation requirements, low ohmic losses, high power, and low PIM levels. 70 MHz – 5 GHz.

Renaissance Electronics Corp | 978-772-7774 | Harvard, MA
Transmitter combiners, receiver multi-couplers, isolators, circulators, directional couplers, power dividers/combiners, terminations, DC-26.5 GHz, coaxial, multi-position, x-fer.

Res-Net Microwave | 727-536-7861 | Largo, FL
Complete line of precision RF & microwave components including attenuators, terminations, resistors, and diode detectors for commercial, military, and space applications. Products range from the small flange type to large 2,000 watt connectorized power attenuators and/or terminations at frequencies up to 26.5 GHz. In-house photo etch and laser trim capability.

Response Microwave | 978-772-3767 | Devens, MA
Manufacturer of drop-in and connectorized hybrids & couplers, combiners & dividers, filters & diplexers, isolators & circulators, coaxial & optical attenuators & adaptors, terminations, surge protection, delay lines, connectors, cable & cable assemblies, laser diodes, and custom assemblies.

RF & Connector Technology
+82 505 274 0002 | YoungTon Suwon, Korea
Coaxial connectors & adapters, cable assemblies, RF attenuators, terminations, couplers, power couplers & dividers, DC blocks, surge arrestors, antennas.

RFHIC Corporation USA | 919-342-7099 | Cary, NC
CATV hybrid line amplifiers, broadcasting amplifiers, FTTH amplifiers, digital TV application, MMIC (GaN, GaAs), high power transistors (GaN), low noise, wideband, & radar pallet amplifiers, PLLs, mixers, directional couplers.

RF-Lambda | 613-592-6858 | Canada
Couplers, circulators, isolators, mixers, attenuators, coupler, power amplifiers, LNA, VCO, switches, oscillators, connectors, adapters.

Skyworks Solutions | 781-376-3000 | Woburn, MA
RF amplifiers, attenuators, circulators, demodulators, detectors, diodes, directional couplers, FEMs, RF subsystems, isolators, mixers, modulators, optoisolators, phase shifters, PLLs-synthesizers-VCOs, & more.

Spinner | 770-263-6326 | Norcross, GA
Coaxial connectors, cable assemblies, directional couplers, phase shifters, filters, stub tuners, DC breaks, coaxial loads and attenuators, waveguide components, coaxial and waveguide switches, lightning protectors, audio/video broadcast (analog and digital) components, accessories for network analyzers including calibration kits, gauges, articulated lines, push-on connectors, connector-savers.

State of the Art | 800-458-3401 | State College, PA
Thick, thin film chip, surface mount, high reliability, 50 ohms, up to 20 GHz resistors, coplanar chip attenuators, thick film jumpers.

Suncoast Microwave | 727-573-1280 | Clearwater, FL
Quality, cost effective waveguide components including flexible, terminations, adapters, and couplers.

US Microwaves
408-970-9680 | Santa Clara, CA
Products include attenuators, diodes, inductors, substrates, capacitors, dividers, resistors, terminations, couplers, filters, MMICs, LDOs.

Vector Telecom | www.+61 3 9607 8357 | Melbourne , Australia
Waveguide components and assemblies, coaxial components and antennas.

vidaRF | www.877-777-8432 | Huntersville, NC
Offering High performance isolators, circulators, power dividers, couplers, RF connectors, adapters, custom cable assemblies, attenuators, and terminations. Custom designs available. In-stock items shipped within 24 hours.

Vidyut Yantra Ydyog | 91 1232 242223 | India
Manufacturer of microwave and millimeter waveguide components, antennas, & attenuators.

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