These companies manufacture oscillators, frequency sources, and frequency synthesizers.
Oscillators come in many varieties with many different frequency determining devices.
Everything from low-tech LC (inductor-capacitor) tank circuits to crystals and YIG type
oscillators are used. High and low accuracy and stability, frequency ranges, fixed frequency
and variable frequency, are among the available options. If you are looking for
test equipment that performs these functions,
please click this link.
Abracon | 949-546-8000
| Rancho Santa Margarita, CA
Ceramic, SAW, dielectric filters, VCXO, TCXO, clock oscillators,
crystal resonators, magnetics, transformers, chokes, inductors.
(now Spectrum Microwave, now API Technologies) | 888-553-7531 | Philadelphia, PA
amplifiers to 2 GHz and VCOs to 20 GHz. 750 datasheets to choose from with customizations
requested. Industry standard packages, aggressive lead times and great customer service,
"Cascade" system simulator software - FREE.
AXTAL GmbH & Co. KG
| +49 (6261)939834
Mosbach | Baden-Wuerttemberg | Germany
Quartz crystals, oscillators,
filters, Langasite resonators, piezo sensors, VCO, VCXO, TCXO, OCXO, DOCXO, GPS-OCXO.
| 814-838-3571 | Erie, PA
Precision crystal resonators and oscillators with product
selection tools for quartz crystal and crystal oscillator, product family overviews,
and engineering drawings available for online-viewing, or downloading in the popular
| 800-526-3935 | Middlesex, NJ
Quartz crystals, clock oscillators, VCXOs and TCXOs.
| 866-522-6888 Santa Rosa, CA
Amplifier modules, amplifier, switch & attenuator
ICs frequency dividers, I/Q modulators, synthesizers, test & measurement products.
Cernex | 408-541-9226
| Sunnyvale, CA
Amplifiers, antennas, couplers, isolators, circulators, filters, diplexers,
oscillators, noise sources, switches, phase shifters, transition & adapters, mixers,
waveguide products, attenuators, terminations, detectors, subsystems.
Commutek Electronics Ltd
| 732-698 9933 | East Brunswick, NJ
Quartz crystal devices and oscillators.
| 630-851-4722 | Aurora, IL
Crystals, VCOs, VCXOs, TCXOs, OCXOs, VCSOs, clock oscillators.
| 800-237-3061 | Ft. Myers, FL
Quartz crystals, XOs (clock oscillators), TCXOs (temperature
compensated oscillators), VCXOs (voltage controlled oscillators), and TCVCXOs (temperature
compensated voltage controlled oscillators), VCO line from 50 MHz to 3.5 GHz.
| 574-293-7511 | Elkhart, IN
Bluetooth, ceramic duplexers, filters, terminators, DIP
switches, modules (synthesizer, frequency translator, jitter attenuation, timing, clock
generators, VCO's, high frequency VCXO's, VCSO's, IF filters), oscillators.
dBm Corp | 973-709-0020
| Wayne, NJ
Noise generators, satellite link emulators, RF up/down converters, frequency
| 510-668-5100 | Fremont, CA
Switching power supplies, chip inductors, DC/DC converters,
voltage regulator modules, EMI filters, voltage controlled oscillators (VCO), temperature
controllers, thermal management products, video displays.
800-433-1280 | Costa Mesa, CA
Thru-hole, surface mount oscillators & crystals,
metal, PCB, ceramic and plastic packages.
| 201-767-8030 | Rockleigh, NJ
Designs, develops, manufactures and markets state-of-the-art
RF and microwave modules & sub-systems including frequency synthesizers, phase locked
oscillators, fiber optic products, and custom modules, for commercial & defense applications.
Elisra Microwave Division
| 972-3-6175273 | Israel
Microwave and millimeter-wave components DC-40 GHz: amplifiers,
control devices, DLVA's, log amplifiers, multi-function modules, super-components, frequency
sources and more.
| 775-345-2411 | Reno, NV
Manufactures the most complete lineup of high-performance
standard and custom-designed signal sources in the microwave industry. We specialize
in surface-mount and modular Phase-Locked Oscillators (PLO) and Frequency Synthesizers
(PLL) from 4 MHz to over 30 GHz for commercial and military systems.
(now Spectrum Microwave, now API Technologies) | om814-237-5738 | State College, PA
VCOs, crystal oscillators, frequency synthesizers, coaxial resonators, phase locked oscillators,
| 775-345-0461 | Verdi, NV
VCO packages - EVCO series & ELCO series.
| 816-231-7375 | Kansas City, MO
Leading supplier of custom IF, RF, Microwave, EMI(military) &
Front End filters. Filter types include LC, crystal ceramic, SAW & microwave from
DC to 10 GHz . Oscillators and crystals are available including TCXOs & VCXOs. Filtronetics
Inc has been providing solutions to for 35 years and is ISO-9001:2000 certified. Please
visit our web site or call.
(now ORMELABS) | +33 951486698 | France
Programmable attenuators, frequency synthesizers,
RF filters, ISM-band ID systems, custom design, Smith Chart software.
| 800-800-9825 | Huntington Beach, CA
Crystals, inductors, clock, voltage controlled,
temperature compensated, oscillators, monolithic crystal filters.
General Electronic Devices
| 760-591-4170 | San Marcos, CA
VCOs, OCXOs, VCXOs, TCXOs, VCTCXOs, DROs, frequency
translators, synthesizers, microwave amplifiers, clock oscillators and crystals.
(now Herley, now Ultra Electronics) | 717-735-8117 | Lancaster, PA
power dividers, oscillators, synthesizers, phase shifters, switches.
| 717-766-0223 | Mechanicsburg, PA
Crystal oscillators, OCXOs, TCXOs and VCXOs and
| 973-334-2676 | Boonton, NJ
Capacitors for RF and microwave applications, fiber optic
connectors, adapters, variable attenuators, ferrules, and sleeves for single mode and
multimode applications, cable assemblies, termination kits.
(now Ultra Electronics) | 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.
| 888-355-4574 | Reno, NV
Frequency control products - crystals, data clock oscillators,
VCXO, VCO, TCXO, TCVCXO, OCXO, crystal filter, saw filter synthesizers.
KVG Quartz Crystal Technology
| +49-0-7263-648-126 | Neckarbischofsheim, Germany
Oven-controlled oscillators, low
g sensitivity (LGS) technology, RF TCXOs and OCXOs, ceramic & crystal oscillators &
filters. Surface mount & connectorized packages available.
| Produces ceramic capacitors, piezo products and RF modules utilizing fine ceramic technologies,
and crystal products using high purity quartz crystals.
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.
| 805-987-3677 | Camarillo, CA
Specializes in military compliant hardware, featuring
rugged construction and hermetic housings, military airborne and ground environments,
and MIL-STD screening and quality systems. Frequency converters, dielectric resonator
oscillators, low noise and medium power 0.01 to 45 GHz power amplifiers 10 to 150 Watts
UHF to Ka Band. Military and space environments, qualification, screening, analysis.
MCLI | 800-333-6254
| St. Petersburg, FL
Power dividers, couplers, isolators, circulators, waveguide components,
oscillators, filters, hybrids, attenuators, switches, terminations, amplifiers.
Mercury United Electronics
| 909-466-4027 | Rancho Cucamonga, CA
Since 1973, is a manufacturer of frequency control
products including crystals, oscillators, low EMI spread spectrum clocks, TCXO’s, VCTCXO’s,
VCXO’s, OCXO’s and monolithic crystal filters.
| 847-818-9825 | Arlington Heights, IL
SMD crystals, AT cut, 10 kHz to 200 MHz crystals,
OCXO, VCXO, ceramic SMD, 1 Hz to 160 MHz oscillators.
Wireless | 510-770-9221 | Fremont, CA
Oscillators, filters, multipliers,
drivers/control, PLOs, synthesizers.
| 603-883-2900 | Hudson, NH
Test equipment, noise sources, voltage controlled oscillators,
switches, limiters, phase shifters, attenuators.
| 714-505-0998 | Tustin, CA
Phase locked or free running dielectric resonator oscillators
(DRO), 2.8 GHz to 60.0 GHz, ovenized crystal oscillator 70-120MHz.
Mid-Atlantic RF Systems
| 410-893-2430 | Forest Hill, MD
Hybrid, directional couplers, switches, RF power
dividers, RF amplifiers, synthesizers, distribution assembly, contract RF assembly.
Miteq | 631-436-7400
| Hauppauge, NY
Amplifiers, mixers, frequency multipliers, passive power components,
solid-state switches, attenuators, power dividers, RF and 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.
| Newburyport, MA | 978-465-6064
Log, linear amplifiers, FM discriminators, IF limiters,
VCXOs, OCXOs, TCXOs, small modular fixed frequency synthesizers.
800-762-8800 | Yankton, SD
Manufactures a complete range of frequency control products
for commercial and military applications including crystal resonators, OCXOs, TCXOs,
VCXOs, monolithic and discrete crystal filters, LC filters, and RF subassemblies.
| 800-241-6574 | Smyrna, GA
Chip multi-layer (1.0 2.5 GHz), chip dielectric (2450
GHz, Bluetooth), surface mount capacitors, thermistors/resistors, coil (inductors)/delay
lines, noise suppression products/EMI filters, resonators, piezoelectric sound components,
coaxial connectors, antenna/duplexers, isolators/circulators, PLL modules, VCOs, TCXO,
RF diode switches, DC-DC converters, sensors.
Nexyn Corp | 408-982-9339
| Santa Clara, CA
PLDROs from 3 to 23 GHz and PLO's from 300 MHz to 3 GHz, crystal
references & phase locked references from 50 to 400 MHz, frequency synthesizers.
| 530-642-9123 | Placerville, CA
Microwave & Millimeter wave components from 500
MHz to 110 GHz, amplifiers, frequency multipliers, up/down converters, filters, oscillators,
| 5513-642-3000 | Cincinnati, OH
NovaSource is a small, low-cost and easy-to-use programmable
signal generator with a Windows-based user interface. NovaSource not only saves space
on your lab bench or test rack, but also saves money in your capital equipment budget.
OmniYIG | 408-988-0843
| Santa Clara, CA
Band reject, bandpass Yig filters, Yig oscillators, Yig multipliers,
comb generators, detectors, limiters.
Orban Microwave (OMP)
| 915-590-0825 | El Paso, TX
Frequency converters, power amplifiers, low noise amplifiers,
local oscillators, patch antennas, parabolic antennas and antenna arrays for WLAN, GPS,
cellular, point to point, satellite and other applications.
(now Vectron) | 888-328-7661 | Hudson, NH
VCXOs (voltage controlled crystal oscillators),
VCSOs (voltage controlled SAW oscillators) EMXO's & OCXOs (evacuated & oven controlled
crystal oscillators), TCXOs (temperature compensated crystal oscillators), XOs (crystal
oscillators), frequency translation & clock smoothing products, clock & data
recovery products, timing modules, crystals, SAWs (surface acoustic wave filters).
Oscilent Corporation | www.oscilent.com
| 949-252-0522 | Irvine, CA
Oscillent refuses to pay their final bill to RF Cafe.
| 408-428-1000 | San Jose, CA
RF and microwave test and measurement instruments, subsystems,
and components. Benchtop frequency counters, modular (VXI) pulsed frequency counters,
and modular (VXI and PXI) synthetic instruments including down/up converters, synthesizers,
and LOs for both commercial and military applications. Instrument-grade, fast-switching
synthesizer modules. Narrowband and broadband microwave components, ranging from VCOs
to complex custom-built assemblies for military instrumentation and telecommunications
Poseidon Scientific Instruments
| ++61 8 9430 6639 | Fremantle, Australia
Ultra low phase noise microwave oscillators,
phase noise analyzers for 5 MHz to 18 GHz and above.
Praxsym | 217-897-1744
| Fisher, IL
Test equipment to determine best layout for wireless communications
systems. PAMS (Portable Attenuation Measurement System), PAMS-C (Commercial
PAMS model), PathTrax, T-Meter broadband wireless power meter family, SEITS (Shielded
Enclosure Isolation Test Set), single & dual output synthesizers, DDS, RF power management &
| 732-206-0660 | Brick, NJ
RF amplifiers, triode cavity oscillators, sources, transmitters,
test equipment for cellular, military, medical, sterilization, for university and private
labs. 600-3000 MHz, 500 W peak to 50 kW peak nominal. Design, manufacture
and service RF drivers. Repair/refurbish medical RF drivers manufactured by SPC, MPD,
Titan Beta, Micon, Siemens, SGS Thomson, Varian, Comtech, Pro-Comm.
Technology | 6609-586-8140 | Mercerville, NJ
Manufacturer of high quality
oscillators and amplifiers for the military and telecommunications markets - DRO, PLDRO,
coaxial resonator oscillators, Military | Satcom amplifiers, power dividers, phase noise
measurement system, phase shifters, phase locked YIG frequency synthesizers.
Pulse Research Lab
| 3310-515-5330 | Torrance, CA
Coupling and termination modules, RF power dividers &
splitters, clock sources, RF switches & scanners.
Spectrum Microwave, now API Technologies) | 8888-553-7531 | Palm Bay, FL
mixers and VCOs. 750 datasheets to choose from with customizations requested. Industry
standard packages, aggressive lead times and great customer service.
Q-Tech | 3310-836-7900
| Culver City, CA
Complete crystal oscillator capability, ranging from standard clock
oscillators to MCXO's.
8858-587-1121 | San Diego, CA
CDMA wireless technology, CDMA2000 (1X and 1x EV-DO)
and WCDMA (UMTS) products.
Radian Technologies (now Spectrum Microwave) | specwave.com |8888-553-7531
| Palm Bay, FL
RF & Microwave Filters including cavity filters, lumped elements,
ceramic filters, waveguide filters, tubular filters, suspended substrate, diplexers,
| 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,
and phase shifters, and
transceiver & radar subsystems are offered.
Rakon | +64 9
573 5554 | New Zealand
GPS, general communication, microprocessor, SMD communication
RSX, SMD communication UM, SMD microprocessor 49/SM, SMD microprocessor CSX, tuning fork
crystals, clock oscillators, GPS TCXO's, integrated TCXO's & VCTCXO's, SMD clock
oscillators, SMD TCXO's & VCTCXO's, temperature output oscillators, thru-hole TCXO's &
VCTCXO's, voltage controlled crystal oscillators.
Raltron | 305-593-6033
| Miami, FL
Clock oscillators, crystals, crystal filters, OCXOs, TCXOs, VCOs, VCXOs
programmable clocks, resonators, SAW devices, synchronization modules.
Ray Micro Devices
| 7717- 266-8666 | York, PA
State-of-the-art and highly scalable design and fabrication
solutions for Microwave, Telecom and Satellite Communications. RMD's expertise lies in
the development of hardware products for the 10-40 GHz spectrum.
RF Monolithics |
8800-704-6079 | Dallas, TX
Provider of RF solutions and wireless telemetry systems.
Roswin | 82-41-621-4450
| ChungNom, Korea
Products include phase locked loop modules, voltage controlled oscillators,
low noise amplifiers, high power amplifiers, dielectric filters, LC filters & UDC
RTx Technology Co., Ltd
| +82-31-743-6275 | South Korea
Filters, duplexers, multiplexers (ceramic/cavity),
VCOs & PLL synthesizers, isolators & circulators, up/down converters, combiners &
dividers, directional couplers, SAW devices, attenuators, terminators.
(now Spectrum Microwave, now API Technologies) | 8888-553-7531 | Delmar, DE
integrated microwave assemblies, tuners, synthesizers, filters, reference oscillators,
harmonic generators. Call to discuss with an engineer your microwave component or supercomponent
| 06 07 74 66 01 | France
Software Definable Radio (SDR) designs. Long Range (20km)
USB Bluetooth modules. High resolution 0 to 3 GHz Frac N synthesizers(1 Hz steps, better
than -100 dBc | Hz @ 1 kHz), PA modules : 20 W Linear (60 W w/heat sink) 1.2/1.5GHz.
LDMOS 400 to 1550 MHz in 7 to 9% BW @ 2 to 4 W.
Silicon Devices (UK)
Limited | ++64 7 574 2894 | UK
Voltage controlled oscillator modules,
ZigBee RF front-ends, ISM, UHF band transceivers, DAB radio receivers, RFID transponders,
SRD modules, RFIC die, RF Power Amplifier modules, integer-n and fractional-n Phase locked
loops, sigma delta PLL, obsolete RFICs and analog devices.
(now RFMD, now QORVO) | 336-664-1233 | Greensboro, NC
Designer & manufacturer
of RF components serving existing and emerging wireless and wireline markets, offering
a wide range of innovative RF solutions for transmitter, receiver and transceiver designs
including amplifiers, transistors, mixers, modulators, VCOs, PLLs, demodulators, stripline
Sivers IMA AB
| +46-8-7036800 | Kista, Sweden
VCOs, PLLs & Synthesizers, FMCW radar sensor front
ends, millimeter wave transceiver products.
Suntsu Frequency Control
| 9949-955-2195 | Newport Beach, CA
Quartz crystals, crystal oscillators, oven controlled
crystal oscillators (OCXOs), temperature compensated crystal oscillators (TCXOs), voltage
controlled crystal oscillators (VCXOs).
| 9973-881-8800 | Paterson, NJ
Attenuators, switches, couplers, DC block, demodulators,
filters, frequency synthesizers, SAW oscillators, mixers, phase shifters, power dividers,
transformers, VCOs, test fixtures.
| 717-774-2746 | New Cumberland, PA
Ultra low noise crystal controlled microwave sources,
frequency multipliers, phase locked multipliers, and crystal controlled oscillators for
military & commercial markets.
Tech Time, LTD
| +972-4-6263891 | Israel
Clocks, VCXOs, OCXOs, TCXOs, crystals, frequency modules.
| 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.
| 8847-934-4141 | Rolling Meadows, IL
Crystal units, clock oscillators, VCOs, VCXOs,
TCXOs, VCTCXOs, crystal filters.
| 949-261-2022 | Irvine, CA
Voltage detectors, power MOSFETs, voltage regulators,
opamps, DC | DC Converters, CMOS logics, charge pump, inverter ICs, oscillators, temperature
sensors, PIN diodes.
| 888-283-8444 | Tampa, FL
Attenuators, circulators, isolators, comb generators, control
devices, couplers, delay line filters, GPS time & frequency, hybrids, IQ mod &
demod, mixers, multipliers, oscillators, phase shifters, splitters & combiners, synthesizers,
Universal Microwave Corp
(now RFMD, now QORVO) | 8877-862-9873 | Tempe, AZ
VCOs and synthesizers.
Valpey Fisher Corp
| 800-982-5737 | Hopkinton, MA
Quartz crystals, XOs, VCXOs, OCXOs, high reliability,
| 888-328-7661 | Hudson, NH
Crystals, oscillators, SAW filters.
| +972-46260505 | Or-Akiva, Israel
High precision timing, frequency control and synchronization
products including clock oscillators, VCXOs, FCXOs, TCXOs, OCXOs, synthesizers and timing
| 5512-835-2038 | Austin, TX
Crystal oscillators, RF modules, synthesizers.