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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 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 components including 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.
Clear Microwave | 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, DC blocks.
ConductRF | 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 horn antennas.
Custom MMIC | 978-467-4290 | Westford, MA
Fabless
RF and microwave MMIC designer trusted by government and defense industry OEMs with
their biggest microwave circuit challenges to solve various size, weight, performance,
and cost (SWaP-C) challenges throughout the microwave signal chain. We also have
a line of off-the-shelf MMICs including amplifiers, mixers, attenuators, phase shifters,
and switches. Over 25 years of combined experience in designing state-of-the-art
MMIC chips for millimeter wave, point-to-point radio, VSAT, WLAN, and cellular systems
as well as general microwave applications.
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.
everything RF | 312-436-0084
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.
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.
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 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 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.
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.
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.
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.
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.
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.
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.
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.
Amplifiers,
receivers,
Oscillators,
switches, attenuators, circulators & isolators, filters,
waveguide,
antennas, and
phase shifters, and
transceiver & radar subsystems are offered.
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 Superstore | 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 in USA.
RF-Lambda
| 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.
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.
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.
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