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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.
Qorvo / 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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