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.
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
| 317-346-6101 | Franklin, IN
Adapters, attenuators, power combiners, power
dividers, power couplers, terminations, high power, 1-1500 Watts, connectors,
Centric RF | 800-399-6891|
Stocks various RF and microwave coaxial components including
attenuators, adapters, cable assemblies, terminations, power dividers, and more.
(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.
| 610-844-6421 | Malvern, PA |
N-way dividers/combiners (reactive &
resistive), high power combiners, directional couplers, 90° & 180° 3 dB
hybrids couplers, RF switches, phase shifters, limiters, detectors, bias Tees,
| 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.
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
(now QORVO)| 978-467-4290 | Westford, MA
Fabless RF and microwave MMIC designer
of microwave circuits to solve various size, weight, performance, and cost (SWaP-C)
challenges throughout the microwave signal chain. Off-the-shelf MMICs including
amplifiers, mixers, attenuators, phase shifters, and switches. Over 25 years
combined experience in MMIC chips for millimeter wave, point-to-point radio,
VSAT, WLAN, and cellular systems as well as general microwave applications.
| 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.
Signal (now National Instruments) | | 800-982-4064 | Medfield,
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
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 &
(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.
INSTOCK Wireless 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, engineering design.
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
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.
| 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
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.
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.
MECA Electronics | 866-444-6322
| Denville, NJ
RF & microwave components for in-building, satellite,
radar, radio, telemetry, mobile radio, aviation & ATC. Attenuators, directional &
hybrid couplers, isolators & circulators, power dividers & combiners,
loads, DC blocks, bias-Ts and adapters & cables.
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.
Microtech | 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,
(now Emerson Network Power) | 734-429-4773 | Saline, MI
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.
MPDevice | +82-32-822-3290
| Incheon, Korea
Manufacturer of RF attenuators and terminations, coaxial
connectors, adapters, and cable assemblies, DC blocks, surge arrestors, power
combiner / dividers, and directional couplers.
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.
QORVO | 833-641-3810
| Greensboro, NC
RFICs and packaged modules used in cellular networks and
mobile phones, for wireless connectivity such as wireless LAN, GPS and Bluetooth,
cable modems and cable TV infrastructure, applications including military radar.
GaAs- and GaN-based power amplifiers, filters, switches, and FEMs used in smartphones,
WiFi wireless infrastructure equipment.
| 857-499-0071 | Cohasset, MA
Millimeter-wave waveguide components including
attenuators, detectors, diplexers, power amplifiers, mixers, isolators &
circulator, multipliers, antennas, switches, probe adapters, terminations, and
filters. Waveguide sections include straight, bends, twists, transitions, and
adapters. Patented "GuideLock" connector eliminates screws. Cryogenic components
available. Designed and manufactured at their Massachusetts facility.
QuinStar Technology |
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.
attenuators, circulators & isolators, filters,
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
| 888-443-3427 | Denver, CO
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.
RF Techniques | 408-433-1941
| San Jose, CA
High reliability brazed high power resistors, high power attenuators
and high power terminations in aluminum nitride (AlN), alumina & beryllium
oxide (BeO) substrates for the Microwaves & RF applications. 100% manufactured
RF-Lambda | 613-592-6858
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.
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,
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
| 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,
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
Vidyut Yantra Ydyog
| 91 1232 242223 | India
Manufacturer of microwave and millimeter waveguide
components, antennas, & attenuators.
Withwave | South
Korea | +82-070-7118-0705
Coaxial connectors and adapters, terminations,
attenuators, cable assemblies, and accessories for test applications. The coaxial-to-planar
T-Probe™ is useful from
DC-20 GHz. VNA calibrator kits and VNA auto-calibrator.