Attenuators, Bias-Ts, & Terminations
Fixed | Variable
Manufacturers & Services
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.
Please consider contacting RF Cafe advertisers first for your needs.
Attenuator Design Data
My policy is to only list companies that actually manufacture product or offer services related to the page title subject.
Product distributors and sales representatives are not listed (they have their own page). This helps guarantee that each
listing offers a unique product or service. NOTICE: I am no longer adding hyperlinks. Your best bet is to use a search
engine to find company websites directly. If you are interested in advertising, please visit my
Advertising information page
RF and microwave filters
for commercial and
Fairview Microwave Inc.
1130 Junction Dr., Allen, TX
Fax: (972) 649-6689
|Globally renowned as a leading provider of high-quality RF and microwave components,
same day shipping, and no minimum purchase requirements.
|APC7, BMC, BMA, C, HN, MCX, MHV, MMCX, QMA, SC, SMA, SMB, SMC, SMP, SSMA, SSMB,
SSMC, N, TNC, 7-16, 3.5/2.92/2.4/1.85mm, UHF, ZMA
Adapters • Attenuators
• Connectors • Couplers
• DC Blocks • Detectors
• Limiters • Isolators
• Circulators •
Mixers • Phase Shifters •
Power Dividers • Rotary
Joints & Switches •
• Terminations •
Times Microwave Products •
SMA, RF, & Microwave Cables
in various lengths and types are available.
Custom Cables Assemblies!
RF Torque Wrenches •
SMP, GPO, & Mini-SMP Tools •
• Crimp Tools •
|Innovative Power Products has more than 30 years of experience designing and manufacturing RF Passive
Components. Our couplers, combiners, resistors, and terminations incorporate the latest technology in
materials available, which equates to unrivaled product performance.
◊ 30 MHz to 4.2 GHz
◊ Power 200 to 800 W CW
◊ 20 MHz to 3.0 GHz
◊ Power up to 2 kW
◊ 20 MHz to 4 GHz
◊ Power up to 2 kW
◊ DC to 6 GHz
◊ Power up to 800 W
|If you are looking for something that is not posted on our site, please use our
Contact Us form
to let us know your specific needs. A representative will contact you to discuss your requirements and
help your choose the right product for your application.
Tel: +886 02 29029282
|JyeBao is a connector, cable, cable assembly and passive components manufacturer. Synergies and
large stock keep lead times to a minimum and allow us to offer customers an unparalleled flexibility. Innovation
is pivotal and we are constantly developing new products.
SMA, K, SMB, SMC, MMCX, MCX, BNC, BMA, BMC, C, FME, HN, MHV, N, SC, SHV, Snap on, SMP, SSMB, TNC, TRB/BNC, UHF
- Over 400 Types
- Semi-rigid. Hand bendable. JBY low loss (to 6 GHz). Low loss (to 18 GHz). Triax, Twinax, RG. Halogen free. Japanese
Assemblies - Flexible RG, Semi-rigid. Delay lines. Low loss, Ø-matched assemblies to 40 GHz.
- Fixed attenuators, Matching pads, Dividers / combiners, DC blocks, Feed through & high power terminations,
Cables - Low loss precision cables for lab use. DC to 18/40 GHz.
| Dow-Key Microwave Corporation is the world's
manufacturer of electro-mechanical RF
switches. We are
and committed to providing unparalleled
service, competitive pricing, on-time
delivery and switch
products that are
distinguished by quality and reliability.
| Dow-Key offers the largest switch product line in
world with over 10,000 unique configurations.
Coaxial Switches - SPDT, DPDT, Transfer,
Manual, Fail-Safe, NO,
Switch Matrices - Multi-Pole,
Fiber Optics Matrices - 8x14, 14x15
Programmable Attenuators - Up to 127 dB
30 - 3000 MHz
Programmable Delay Lines - 10 ps Step
Space Qualified Switches - 2/3 Switch,
SPDT, DPDT, Transfer, High Power
Waveguide Switches - SPDT, DPDT, X-fer
|For our latest specials, please check our
Excess Inventory &
Out the Door in 24
|American Microwave Corporation (AMC) uses a state-of-the-art clean room to manufacture all of it's
products, as well as a fully automated machine shop. AMC is a leader in the design and manufacturing of DC to 40 GHz
solid state control components for commercial and military grades. ISO 9001:2000.
SPST through SP64T
Low Video Transient
- True DC
Bandwidths. Fast Rise
Times. Short Recovery
Tunnel Diode Amps
Power Dividers/Couplers: 0.5 - 18 GHz
Inductive. Resistive. 15 kHz to 18 GHz
Middleburg Heights, OH
|Coaxial Dynamics has been a leading manufacturer of precision equipment for the measurement and termination
of RF power for over 30 years. Our equipment is used by engineers and technicians in a wide variety of applications
throughout the world. We have sales offices all over the world to serve your needs.
and Solutions Include
|• Digital Broadcast Equipment -
monitor, high power
meters, plug-in elements
|• Directional Wattmeters - Average & peak
power, Field strength
|• Line Sections & Elements - 7/8" to 6-1/8"
|• Plug-In Elements - 7/8" to 6-1/8"
|• Loads & Attenuators - Dry, liquid, air, and
forced air cooled,
|• Signal Samplers - Tap-offs, x-Tractors
Meters - Portable & panel mount
|• Accessories - Quick-match, coupling kits
|• Low Pass Filters - 100W and 200 W
|• Power Sensors - Mainline, wideband
Custom OEM Products - Send us your specs
|Online Price Quotes Available
Tel: (973) 779-6262
|Pulsar Microwave is celebrating its 26th anniversary as a
valued supplier of passive microwave components covering the frequency range
of 10 kHz to 40 GHz with both narrow band and ultra-broadband products
for the wireless communications markets. ISO and RoHS.
We Specialize in Custom Requirements
Power Dividers/Combiners -
2-32 Way, Low /
High Power to 40 GHz. SMT & Connectorized.
Directional Couplers - Low
and High Power to
18 GHz, 2500 watts. SMT and Connectorized.
Attenuators - Pin
Controlled and Digital Controlled to 16
Switches - Absorpt./Reflect.,
SP1T-8T to 18 GHz.
90° & 180° Hybrids
- 10% BW, 2:1 to 4:1,
2:1 to 6:1, 5:1 to 125:1, 3 & 4 Port,
to 20 GHz.
Phase Shifters - Analog
(Narrow, Octave) and
Switched Bit Digital, to 4 GHz.
Mixers - High IP3,
DC/AC Coupled, to 7 GHz.
High Frequency to 18 GHz. SMT & Connectorized.
I & Q Networks
- Modulators, Demodulators,
and Image Reject Mixers, to 16 GHz.
Bias Tees - 0.01 to
40 GHz. SMT & Connector.
- 0.2-6000 MHz. SMT &
DC Blocks - To 18
GHz, SMT & Connectorized.
Aeroflex | KDI, Inc | aeroflex.com/ams/kdi-rp/micro-kdi-rp-prods.cfm
| Whippany, NJ
Attenuators, phase shifters, digital time delay units, LNA's, switches,
modulators, dividers combiners & couplers, ferrites, levelers, duplexers, amplifiers,
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 | broadwavetechnologies.com
317-346-6101 | Franklin, IN
Adapters, attenuators, power combiners, power dividers,
power couplers, terminations, high power, 1-1500 Watts, connectors, adapters.
Channel Microwave (now Smiths Microwave) | channelmicrowave.com
| Camarillo, CA
Coaxial and waveguide isolators, circulators, ISO-adapters, integrated
assemblies, filters, terminations.
Charter Engineering | ceiswitches.com
| Largo, FL
Electromechanical switches, attenuators, couplers terminations, isolators,
circulators, power dividers.
Corry Micronics | cormic.com
724-940-7556 | Corry,
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.
Cougar Components (now Teledyne Cougar)
408-522-3838 | Sunnyvale, CA
RF and microwave cascadable amplifiers
and subsystems in 100 kHz to 12 GHz range. Detectors, limiters, limiting amplifiers,
attenuators, AGC amplifiers, oscillators w/MMIC amplifiers.
(now DITF - Interconnect Technology) | ditf.com
775-782-1041 | Minden, NV
thin film sputtered and etched circuits, fabricates RF microwave components such as
mixers, attenuators, combiners, amplifier substrates and filters. We are a build to
print service and can fabricate in volumes; servicing the microwave, optronics, aerospace
Dynamic Signal (now National Instruments) | sine.ni.com/nips/cds/view/p/lang/en/nid/1485
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 |
| Stuart, FL
Coax, cable, hybrid couplers, thin film resistive products.
Ingenierie (now Ormelabs) | ormelabs.com/fr
+33 951486698 | France
attenuators, frequency synthesizers, RF filters, ISM-band ID systems, custom design,
Smith Chart software.
Herley | herley.com
717-735-8117 | Lancaster, PA
Attenuators, modulators, power dividers, oscillators, synthesizers, phase shifters,
High Sierra Microwave | hsmicrowave.com
530-644-3393 | Camino,
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.
Industry (IFI) | ifi.com
631-467-8400 | Ronkonkoma, NY
such as tetrode tubes, TWTs, klystrons, and solid state devices. Standard horn antennas
and TEM cells.
Ion Beam Milling, Inc | ionbeammilling.com
603-644-2326 | Manchester,
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.
Link Microtek | linkmicrotek.com
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 | luxconn.co.kr
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) | cobham.com
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,
MicroLab/FXR | microlab.fxr.com
973-992-7700 | Livingston,
Attenuators, bias tees, couplers, dc blocks, coaxial junctions, terminations,
low pass filters, power splitters/dividers, tuners & line stretchers, waveguide
Micronetics (now Mercury Systems, Inc.) | micronetics.com
| Hudson, NH
Test equipment, noise sources, voltage controlled oscillators, switches,
limiters, phase shifters, attenuators.
Microtech, Inc | microtech-inc.com
203-272-3234 | Cheshire, CT
Waveguide rotary joints, bends, straight, twists, adapters,
couplers, horns, terminations, tees.
Microwave Resources, Inc | microwaveresourcesinc.com
909-627-4125 | Chino, CA
Amplifiers, attenuators, circulators, isolators, frequency
multipliers, waveguide couplers, mixers, detectors, filters, pin switches, adapters.
PMI's organization has been setup to Design, Develop, Manufacture, Test, and Market complex
state-of-the-art Hybrid RF MIC and MMIC Components, Supercomponents, and Subsystems.
products for applications in space, military, commercial,
and consumer electronics systems. DC to 40 GHz.
from PMI's Extensive Line
LNA, VGA, Cryogenic
• Phase Shifters
Analog, Digital• Detectors
• Switch Products
• VCOs & DTOs
• Multifunction Modules
• Integrated Modules
LP, HP, BP, BR,
• I/Q Modulators
• Bi-phase Modulators
• Power Dividers
• Quad Couplers
• DLVAs & SDLVAs
to Your Specifications
Skyworks Solutions is an innovator of high performance analog semiconductors. Leveraging core technologies, Skyworks
supports automotive, broadband, wireless infrastructure, energy management, GPS, industrial, medical, military,
wireless networking, smartphone, and tablet applications. See the list below for our extensive line of products
for the microwave and wireless industries, or click on the Selection Guide.
• WiFi Connectivity
• Wireless Infrastructure/
• Smart Energy-Connected
Home and Automation
• Broad Market LNAs and
• Low Noise Transistors
• Gain Block
• Variable Gain Amplifiers
• WiFi Connectivity
• Smart Energy-Connected
Home and Automation
Modulators / Demodulators
Great Neck, NY
|Since our inception in 1996 in Korea, ISOTEC has been a leading manufacturer of RF and Microwave Connectors
such as SMA, MCX, SSMB, etc., and RF Components such as Attenuators, Terminations, etc., for wireless service providers,
|We provide recognized and trusted products and service to our customers in more than 30 countries worldwide.
ISOTEC offers also an extensive product mix with RF Filters and Multiplexers etc. ISOTEC is ISO9000 and ISO14000
|ISOTEC is ISO-9001 and ISO-14001 registered.
| RF Connectors:
SMA, MCX, MMCX, SMB, BNC, TNC, N,
SSMB, SSMC, QMA, SMP, etc.
| RF Components:
Attenuators, Terminations, Power Dividers,
Between-series and within-series adaptors
Coaxial Cable Assemblies:
Semi-Rigid, Semi-Flexible, Flexible
| RF Filters:
Cavity, Ceramic, and LC Filters, Multiplexers
|Kete Microwave Electronics Co., Ltd. specializes in designing and manufacturing
state of the art RF/Microwave passive components solution.
RF/Microwave passive components
solutions including isolator/circulator, RF resistors, power divider/combiner, terminations,
attenuators, 3dB hybrid coupler, multilayer chip ceramic capacitors, feed-through capacitors,
Connectorized, surface mount, drop-in, and waveguide versions available.
| • Filters
• RF Switches
|• Power Dividers
• Power Combiners
• RF Amplifiers
• Directional Couplers
• 3 dB
|Standard catalog products can be modified, or new designs developed, to meet
special requirements, please tell us your need, we'll be happy to work with you.
specializes in high quality, high frequency microwave communication components up to 60 GHz. As a pioneer supplier
of microwave RF components, the main products include directional couplers, bias tees networks, power dividers/combiners,
3 dB hybrids 90° and 180°, microwave mixers, frequency doublers, load terminations, and coaxial connectors and adapters.
components IN STOCK are
available for same day delivery.
|RF / Microwave Components
| • Power Dividers
• Directional Couplers
• Hybrids 90, 180 Degree
• Bias Tees
Coaxial Adapters &
| Additional capabilities: Pin Diode Switches,
Phase Shifters (Analog & Digital), I/Q Modulators,
(Analog & Digital)
|Custom and optimized designs are
available upon customer
|VECTOR TELECOM has fully instrumented microwave, millimeterwave, & antenna
laboratories and production facilities. Our professional engineers have backgrounds from telecommunications,
electronics, space and aviation industries. Frequencies up to 112 GHz, at globally competitive
prices. Custom designs available. TQM / ISO 9001:2000 certification.
|» Straight » Bend
» Twist » Transition
» WG to Coax Adapter
|» Fixed » Variable
|» Single, Dual-Channel
» Circulator » Isolator
|» Low, Med, High Power
» Short Circuit
||» Fixed Attenuator
|» Standard Gain Horn
» Wideband Horn
We provide a wide range of
high quality RF and microwave products with quick delivery time at very competitive low prices. Our products include
coaxial connectors and adapters, circulators, isolators, low noise amplifiers, power amplifiers, broadband amplifiers,
terminations and more, covering the frequency range of 100 MHz to 110 GHz.
High Power Attenuators & Terminations
High Power Waveguide Terminations
Isolators and Circulators
SMA Connectors & RPSMA Connectors
High Power Waveguide Terminations
Low Noise & Power Amplifiers
Subsystems & Frequency Converters
Waveguide Switches, Couplers, more
|We also provide technical consulting services and engineering contracts which include antenna design, electromagnetic
structural analysis, and low cost manufacturing of RF/microwave circuits and systems. We can custom design our products
for your systems and/or make them integrated parts of your products for low cost production.
|Established in November 1999, WOKEN is a Taiwan-based company that specializes in Microwave/RF
coaxial connectors, cables, cable assemblies, Microwave/RF antennas and RF accessories. With
the experienced R&D engineers & technicians, active marketing staff, up-to-date production
equipment and measuring instruments, WOKEN designs its own RF / Microwave products for meeting
all kinds of requirements demanded by its customers at communication markets.
Attenuator: Fixed, Manual, USB Programmable
- Calibration Kit: Open, Short,
- Coaxial Switch: DPDT, SPDT, SP3T/4T/6T/8T,
Ultra Flexible up to 60 GHz
/ Waveguide Adapter : SMA, N, Q, K,
V, up to 60 GHz
- Filter / Diplexers: GSM, GPCS, UMTS,
- Isolator/Circulator: Coaxial, Waveguide,
Divider / Combiner: Resistive, Isolated
- RF Components: Bias T, DC Block,
Matching Pad, Phase Shifter
Testing Cable: Mini Coaxial, Flexible,
- Testing: Probe, DC-20 GHz
Midwest Microwave (now Emerson Network Power) | emersonnetworkpower.com/en-US/Pages/Default.aspx
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.
Miteq | miteq.com
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, Inc
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 -
Planar Monolithics Industries |
301-662-5019 | Frederick, MD
designs, develops, manufactures, tests, and markets hybrid RF/microwave and monolithic
integrated circuits (MIC/MMIC) and components hybrid MIC/MMIC supercomponents and subsystems.
Renaissance Electronics Corp |
978-772-7774 | Harvard, MA
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
Manufacturer of attenuators,
RF terminations, and microwave resistors for the RF and microwave industries.
Response Microwave | responsemicrowave.com
978-772-3767 | Devens, MA
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 | Suwon, Kyounggi ,Korea
Coaxial connector, cable
assembly & RF passive components
RFHIC Corporation USA | rfhic.com/eng
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 | rflambda.com
613-592-6858 | Canada
Couplers, circulators, isolators,
mixers, attenuators, coupler, power amplifiers, LNA, VCO, switches, oscillators, connectors,
Spinner | spinner-group.com
770-263-6326 | Norcross, GA
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 | resistor.com
| State College, PA
Thick, thin film chip, surface mount, high reliability, 50 ohms,
up to 20 GHz resistors, coplanar chip attenuators, thick film jumpers.
Microwave, Inc | suncoastmicrowave.com
727-573-1280 | Clearwater, FL
cost effective waveguide components including flexible, terminations, adapters, and
US Microwaves | usmicrowaves.com
408-970-9680 | Santa Clara, CA
Products include attenuators, diodes, inductors, substrates, capacitors, dividers, resistors,
terminations, couplers, filters, MMICs, LDOs.
Vector Telecom Pty Ltd | vectortele.com
+61 3 9607 8357 | Melbourne , Australia
Waveguide components and assemblies, coaxial
components and antennas.
vidaRF | vidarf.com
877-777-8432 | Lancaster, MA
Designs and manufactures reliable and cost-effective RF | Microwave components including
connectors, adapters, terminations, cable assemblies, antennas, converters (baluns),
Vidyut Yantra Ydyog | vyu-microwave.com
91 1232 242223 |
Manufacturer of microwave and millimeter waveguide components, antennas, &