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Oscillators, VCOs, PLLs, Frequency Sources & Synthesizers
Manufacturers & Services

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 | 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, now API Technologies)
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 | +49 (6261)939834
Mosbach | Baden-Wuerttemberg | Germany
Quartz crystals, oscillators, filters, Langasite resonators, piezo sensors, VCO, VCXO, TCXO, OCXO, DOCXO, GPS-OCXO.

Bliley Technologies | 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 | 800-526-3935 | Middlesex, NJ
Quartz crystals, clock oscillators, VCXOs and TCXOs.

Centellax | 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.

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

Crystek Crystals | 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 | 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 synthesizers, attenuators.

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

Elcom Technologies | 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.

EM Research | 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, now API Technologies)
om814-237-5738 | State College, PA
VCOs, crystal oscillators, frequency synthesizers, coaxial resonators, phase locked oscillators, combline generators.

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

Filtronetics | 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)
+33 951486698 | France
Programmable attenuators, frequency synthesizers, RF filters, ISM-band ID systems, custom design, Smith Chart software.

Frequency Management
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.

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

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

Johanson Manufacturing
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 (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.

ILSI America | 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.

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

Lucix Corporation
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 productsluding crystals, oscillators, low EMI spread spectrum clocks, TCXO’s, VCTCXO’s, VCXO’s, OCXO’s and monolithic crystal filters.

Micro Crystal | 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 | 510-770-9221 | Fremont, CA
Oscillators, filters, multipliers, drivers/control, PLOs, synthesizers.

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

Microwave Dynamics
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.

MTI-Milliren Technologies
Newburyport, MA | 978-465-6064
Log, linear amplifiers, FM discriminators, IF limiters, VCXOs, OCXOs, TCXOs, small modular fixed frequency synthesizers.

MtronPTI | 800-762-8800 | Yankton, SD
Manufactures a complete range of frequency control products for commercial and military applicationsluding crystal resonators, OCXOs, TCXOs, VCXOs, monolithic and discrete crystal filters, LC filters, and RF subassemblies.

Murata Electronics | 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.

Norden Millimeter
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
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.

Oscillatek (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.

Phase Matrix | 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 instrumentsluding 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
++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 & monitoring.

Pro-Comm | 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
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.

Q-Bit (now Spectrum Microwave, now API Technologies)
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 | 3310-836-7900 | Culver City, CA
Complete crystal oscillator capability, ranging from standard clock oscillators to MCXO's.

Qualcomm | 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 | +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 modules.

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.

Salisbury Engineering (now Spectrum Microwave, now API Technologies)
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 | 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.

Sirenza Microdevices (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 couplers, transformers.

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).

Synergy Microwave
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
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.

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.

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

Torex Semiconductor | 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 | 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.

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, COTs oscillators.

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

VN-Technology | +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 | 5512-835-2038 | Austin, TX
Crystal oscillators, RF modules, synthesizers.

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