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
I provide an online
| 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.
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.
| 317-346-6101 | Franklin, IN
Adapters, attenuators, power combiners, power dividers,
power couplers, terminations, high power, 1-1500 Watts, connectors, adapters.
| 800-399-6891| Allen, TX
Stocks various RF and microwave coaxial components
including attenuators, adapters, cable assemblies, terminations, power dividers, and
(now Smiths Microwave) | 805-482-7280 | Camarillo, CA
Coaxial and waveguide isolators,
circulators, ISO-adapters, integrated assemblies, filters, terminations.
| 727-549-8999 | Largo, FL
Electromechanical switches, attenuators, couplers terminations,
isolators, circulators, power dividers.
| 1-978-374-6840 | Methuen, MA
RF connectors and cables DC to 110 GHz, including
RF test, internal system cables, low PIM, high power, phase matched & more. Custom
connector design capability, too. VNA cables including TESTeCON. Formable semi-rigid
and hand-formable solutions up to 60 GHz. Flexible cables: RG & LMR, high flex
double and triple shielded options. D38999 Mil Spec. Fixed attenuators. ITAR Registered.
| 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.
| 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.
Find RF & microwave components, equipment and services - 216,401
products from over 1143 manufacturers listed in 275 categories. Download hundreds of
vendor white papers. Test equipment amplifiers, antennas, attenuators, bias-Ts, &
terminations, RF connectors & adapters, RF filters, power combiners, couplers, &
dividers, RF switches, waveguide, Bluetooth & RFID.
(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.
Components | 973-335-6550 | Boonton, New Jersey
Design & manufacture
2- thru 64-way RF power splitters / combiners from our Boonton, NJ, facility. N, TNC,
BNC, SMA, QMA, RP-SMA connectors. 10 MHz through 6.0 GHz. Optimized specs for Public
Safety Band, Cell, GSM 900 / 1800, PCS, UMTS, GPS, L Band, W-CDMA-3G, TETRA, IEEE802.11
b/g, UHF RFID, ISM, Wi-Fi, WiMAX and LTE wireless. Bias T's. Customization available.
All products in stock. 5 year warranty.
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.
Innovative Power Products
(IPP) | 631-563-0088 | Holbrook, New York
RF & microwave high power,
broadband couplers, combiners, baluns, resistors, terminations and attenuators. Product
integration, custom configurations, custom resistor assemblies, contract manufacturing,
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.
| 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.
| 888-236-9828 | Rolling Meadows, IL
Manufacturer of RF and microwave devices including
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.
| 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.
Lotus Communication Systems
888-236-8588 | Weston, MA
RF modular system components up to 20 GHz - amplifiers,
filters, attenuators, limiters, oscillators, bias-Ts. COTS shielded enclosures w/SMA
connectors for RF / electronics prototyping. Customization to your specification from
prototype to production.
| 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.
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.
| 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.
Mercury Systems) | 603-883-2900 | Hudson, NH
Test equipment, noise sources, voltage
controlled oscillators, switches, limiters, phase shifters, attenuators.
| 203-272-3234 | Cheshire, CT
Waveguide rotary joints, bends, straight, twists, adapters,
couplers, horns, terminations, tees.
| 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.
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.
| 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.
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.
| 310-320-1111 | Torrance, CA
Designs and manufactures millimeter-wave products for
communication, scientific, and test applications including millimeter-wave products,
microelectronic assembly, rapid prototyping, and mass customization.
switches, attenuators, circulators & isolators, filters,
and phase shifters, and
transceiver & radar subsystems are offered.
| +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.
| 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.
| 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.
| 888-443-3427 | Denver, Colorado
Launched in 2017 by
the founder of Pasternack Enterprises. RF coaxial connectors & adapters, coaxial
cable & cable assemblies, surge protectors, attenuators. Items added daily. Free
shipping on orders over $99. Same day shipping on orders received by 3 PM MT.
613-592-6858 | Canada
Couplers, circulators, isolators, mixers, attenuators, coupler,
power amplifiers, LNA, VCO, switches, oscillators, connectors, adapters.
SemiGen | 603-624-8311
| Manchester, NH
Prototype builds and design while handling volume production runs
for the RF/microwave, military, space, homeland security, optical, medical device, commercial-wireless
markets. Manual and fully automatic assembly. Also manufactures PIN, limiter, beam lead,
and Schottky diodes, chip capacitors and attenuators, and printed spiral inductors.
| 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.
| 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.
| 727-573-1280 | Clearwater, FL
Quality, cost effective waveguide components including
flexible, terminations, adapters, and couplers.
408-970-9680 | Santa Clara, CA
Products include attenuators, diodes, inductors, substrates,
capacitors, dividers, resistors, terminations, couplers, filters, MMICs, LDOs.
| 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.