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Oscillators, VCOs, Frequency Sources & Synthesizers
Manufacturers & Services

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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.

Oscillator Design Data

Abracon | abracon.com
949-546-8000 | Rancho Santa Margarita, CA
Ceramic, SAW, dielectric filters, VCXO, TCXO, clock oscillators, crystal resonators, magnetics, transformers, chokes, inductors.

Amplifonix (now Spectrum Microwave)
spectrummicrowave.com
888-553-7531 | Philadelphia, PA
Hybrid 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 | axtal.com
+49 (6261)939834
Mosbach | Baden-Wuerttemberg | Germany
Quartz crystals, oscillators, filters, Langasite resonators, piezo sensors, VCO, VCXO, TCXO, OCXO, DOCXO, GPS-OCXO.

Bliley Technologies | bliley.com
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 ".PDF" format.

Bomar Crystal | bomarcrystal.com
800-526-3935 | Middlesex, NJ
Quartz crystals, clock oscillators, VCXOs and TCXOs.

Centellax | centellax.com
866-522-6888 Santa Rosa, CA
Amplifier modules, amplifier, switch & attenuator ICs frequency dividers, I/Q modulators, synthesizers, test & measurement products.

Cernex | cernex.com408-541-9226 | 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 | commutek.com
732-698 9933 | East Brunswick, NJ
Quartz crystal devices and oscillators.

Connor-Winfield | conwin.com
630-851-4722 | Aurora, IL
Crystals, VCOs, VCXOs, TCXOs, OCXOs, VCSOs, clock oscillators.

Crystek Crystals | crystek.com
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.

CTS Corporation | ctscorp.com
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 | dbmcorp.com
973-709-0020 | Wayne, NJ
Noise generators, satellite link emulators, RF up/down converters, frequency synthesizers, attenuators.

Delta Electronics | deltaww.com
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.

Ecliptek | ecliptek.com
800-433-1280 | Costa Mesa, CA
Thru-hole, surface mount oscillators & crystals, metal, PCB, ceramic and plastic packages.

Elcom Technologies | elcom-tech.com
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 | mw-elisra.com
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.

EM Research | emresearch.com
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.

EMF Systems (now Spectrum Microwave)
spectrummicrowave.com
814-237-5738 | State College, PA
VCOs, crystal oscillators, frequency synthesizers, coaxial resonators, phase locked oscillators, combline generators.

Emhiser Micro-Tech | emhiser.com
775-345-0461 | Verdi, NV
VCO packages - EVCO series & ELCO series.

Filtronetics | filtro.net
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.

FM Ingenierie (now ORMELABS)
ormelabs.com
+33 951486698 | France
Programmable attenuators, frequency synthesizers, RF filters, ISM-band ID systems, custom design, Smith Chart software.

Frequency Management | frequencymanagement.com
800-800-9825 | Huntington Beach, CA
Crystals, inductors, clock, voltage controlled, temperature compensated, oscillators, monolithic crystal filters.

General Electronic Devices | gedlm.com
760-591-4170 | San Marcos, CA
VCOs, OCXOs, VCXOs, TCXOs, VCTCXOs, DROs, frequency translators, synthesizers, microwave amplifiers, clock oscillators and crystals.

General Microwave (now Herley)
herley.com
717-735-8117 | Lancaster, PA
Attenuators, modulators, power dividers, oscillators, synthesizers, phase shifters, switches.

Greenray Industries | greenrayindustries.com
717-766-0223 | Mechanicsburg, PA
Crystal oscillators, OCXOs, TCXOs and VCXOs and VCOs.

Johanson Manufacturing | johansonmfg.com
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.

Herley | herley.com
717-735-8117 | Lancaster, PA
Attenuators, modulators, power dividers, oscillators, synthesizers, phase shifters, switches.

High Sierra Microwave | hsmicrowave.com
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 | hittite.com
978-250-3343 | Chelmsford, MA
Amplifiers, attenuators, frequency multipliers, mixers, modulators, prescalers, switches, VCOs.

ILSI America | ilsiamerica.com
888-355-4574 | Reno, NV
Frequency control products - crystals, data clock oscillators, VCXO, VCO, TCXO, TCVCXO, OCXO, crystal filter, saw filter synthesizers.

Kyocera | global.kyocera.com
Produces ceramic capacitors, piezo products and RF modules utilizing fine ceramic technologies, and crystal products using high purity quartz crystals.

Lucix Corporation | lucix.com
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 | mcli.com
800-333-6254 | St. Petersburg, FL
Power dividers, couplers, isolators, circulators, waveguide components, oscillators, filters, hybrids, attenuators, switches, terminations, amplifiers.

Mercury United Electronics | mercuryunited.com
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.

Micro Crystal | microcrystal.com
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.

Micro Lambda Wireless, Inc | microlambdawireless.com
510-770-9221 | Fremont, CA
Oscillators, filters, multipliers, drivers/control, PLOs, synthesizers.

Micronetics | micronetics.com
603-883-2900 | Hudson, NH
Test equipment, noise sources, voltage controlled oscillators, switches, limiters, phase shifters, attenuators.

Microwave Dynamics, Inc | microwave-dynamics.com
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, Inc | midatlanticrf.com
410-893-2430 | Forest Hill, MD
Hybrid, directional couplers, switches, RF power dividers, RF amplifiers, synthesizers, distribution assembly, contract RF assembly.

Miteq | miteq.com
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.

MTI-Milliren Technologies | mti-milliren.com888-684-1101 | Newburyport, MA
OCXOs, TCXOs, VCXOs, small modular fixed frequency synthesizers.

MtronPTI | mtronpti.com
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.

Murata Electronics | murata.com
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 | nexyn.com
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.

Norden Millimeter, Inc | nordengroup.com
530-642-9123 | Placerville, CA
Microwave & Millimeter wave components from 500 MHz to 110 GHz, amplifiers, frequency multipliers, up/down converters, filters, oscillators, integrated assemblies.

Nova Engineering, Inc | nova-eng.com
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 | omniyig.com
408-988-0843 | Santa Clara, CA
Band reject, bandpass Yig filters, Yig oscillators, Yig multipliers, comb generators, detectors, limiters.

Orban Microwave (OMP) | orbanmicrowave.com
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.

Oscillatek (now Vectron)
otek.com
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 | oscilent.com
949-252-0522 | Irvine, CA
Oscillent refuses to pay their final bill to RF Cafe.

Phase Matrix | phasematrix.com
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 applications.

Poseidon Scientific Instruments | psi.com.au | ++61 8 9430 6639 | Fremantle, Australia
Ultra low phase noise microwave oscillators, phase noise analyzers for 5 MHz to 18 GHz and above.

Praxsym | praxsym.com
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 & monitoring.

Pro-Comm | procomm222.com
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.

Princeton Microwave Technology, Inc | princetonmicrowave.com
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 | pulseresearchlab.com
3310-515-5330 | Torrance, CA
Coupling and termination modules, RF power dividers & splitters, clock sources, RF switches & scanners.

Q-Bit (now Spectrum Microwave)
spectrummicrowave.com
8888-553-7531 | Palm Bay, FL
Amplifiers, mixers and VCOs. 750 datasheets to choose from with customizations requested. Industry standard packages, aggressive lead times and great customer service.

Q-Tech | q-tech.com
3310-836-7900 | Culver City, CA
Complete crystal oscillator capability, ranging from standard clock oscillators to MCXO's.

Qualcomm | qualcomm.com
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, triplexers.

Rakon | rakon.com
+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 | raltron.com
305-593-6033 | Miami, FL
Clock oscillators, crystals, crystal filters, OCXOs, TCXOs, VCOs, VCXOs programmable clocks, resonators, SAW devices, synchronization modules.

Ray Micro Devices | raymicrodevices.com
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, Inc | rfm.com
8800-704-6079 | Dallas, TX
Provider of RF solutions and wireless telemetry systems.

Roswin | roswin.com
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 modules.

RTx Technology Co., Ltd | rtxtech.com
+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.

Salisbury Engineering (now Spectrum Microwave)
spectrummicrowave.com
8888-553-7531 | Delmar, DE
Custom integrated microwave assemblies, tuners, synthesizers, filters, reference oscillators, harmonic generators. Call to discuss with an engineer your microwave component or supercomponent needs.

SigFox Systems | sigfox-system.com
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.

Signal Technology Corp (now Crane)
sigtech.com
480-940-1655 | Chandler, AZ Oscillators, synthesizers, transceivers, isolators, circulators, detectors, limiters, comb generators, mixers, doublers, frequency discriminators, amplifiers, switches, couplers, noise sources.

Silicon Devices (UK) Limited | silicondevices.com
++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.

Sirenza Microdevices (now RFMD)
rfmd.com
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 couplers, transformers.

Sivers IMA AB | siversima.com
+46-8-7036800 | Kista, Sweden
VCOs, PLLs & Synthesizers, FMCW radar sensor front ends, millimeter wave transceiver products.

Suntsu Frequency Control, Inc | suntsuinc.com
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).

Synergy Microwave | synergymwave.com
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.

Techtrol Cyclonetics, Inc | tci-ant.com
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 | time.co.il | ++972-4-6263891 | Israel
Clocks, VCXOs, OCXOs, TCXOs, crystals, frequency modules.

Teledyne Cougar | cougarcorp.com
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.

Tellurian Technologies | telluriantech.com
8847-934-4141 | Rolling Meadows, IL
Crystal units, clock oscillators, VCOs, VCXOs, TCXOs, VCTCXOs, crystal filters.

Torex Semiconductor | torex.co.jp | 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.

Trak Microwave | trak.com
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, transformers.

Toyocom (Epson)
epsontoyocom.co.jp | 847-593-8780 | Arlington Heights, IL
Crystal units, crystal oscillators, SAW filters, crystal filters, optical devices.

Universal Microwave Corp (now RFMD)
vco1.com
8877-862-9873 | Tempe, AZ
VCOs and synthesizers.

Valpey Fisher Corp | valpeyfisher.com
800-982-5737 | Hopkinton, MA
Quartz crystals, XOs, VCXOs, OCXOs, high reliability, COTs oscillators.

Vectron International | vectron.com
888-328-7661 | Hudson, NH
Crystals, oscillators, SAW filters.

VN-Technology | vn-technology.com
+972-46260505 | Or-Akiva, Israel
High precision timing, frequency control and synchronization products including clock oscillators, VCXOs, FCXOs, TCXOs, OCXOs, synthesizers and timing modules.

Wenzel Associates, Inc | wenzel.com
5512-835-2038 | Austin, TX
Crystal oscillators, RF modules, synthesizers.