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Components - Passive Multipliers (FT)
FT Series
Farran Technology manufactures a series of standard frequency multipliers which are available in fixed or tunable versions. GaAs Schottky barrier varactors are used to achieve the highest efficiency. The multipliers can be used with solid state or vacuum tube sources. A rugged compact mechanical design is used to maximise reliability.
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DC Bias Injector
J2130A
When using the network analyzer to measure impedance, such as the capacitance and ESR or a capacitor, or the DCR of an inductor, etc., it is often necessary to provide a voltage bias to the device being tested. This is true of semiconductor junction capacitances, varactors, and some ceramic capacitors (especially X5R). In these cases the impedance is a function of the DC bias on the device. The Picotest DC bias injector (J2130A) is used for this purpose during impedance measurements.
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Voltage Controlled Oscillators
Teledyne Microwave Solutions (TMS) offers Voltage Controlled Oscillators (VCOs) utilizing bipolar transistors & silicon varactors over the frequency range of 40 MHz to 18GHz. Many of the VCO designs incorporate internal filtering, regulation & amplifiers to meet total system requirements in a small integrated package. Additionally, our hermetic hybrid designs can be screened to the most demanding military and space applications.
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Radio Frequency (RF) And Microwave Products
Enable your 5G, aerospace, defense, test and measurement or industrial RF wireless applications with our portfolio of RF and microwave devices. These include high reliability RF diodes, Gallium Nitride (GaN) and Gallium Arsenide (GaAs) Monolithic Microwave Integrated Circuit (MMIC) amplifiers, frequency translation and power transistor devices, switches, attenuators, varactors, filters and more.
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Voltage Controlled Oscillators
Teledyne RF & Microwave offers Voltage Controlled Oscillators (VCOs) utilizing bipolar transistors & silicon varactors over the frequency range of 40 MHz to 18GHz. Many of the VCO designs incorporate internal filtering, regulation & amplifiers to meet total system requirements in a small integrated package. Additionally, our hermetic hybrid designs can be screened to the most demanding military and space applications.
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Oscillators - Voltage Controlled
Teledyne RF & Microwave offers Voltage Controlled Oscillators (VCOs) utilizing bipolar transistors & silicon varactors over the frequency range of 40 MHz to 18GHz. Many of the VCO designs incorporate internal filtering, regulation & amplifiers to meet total system requirements in a small integrated package. Additionally, our hermetic hybrid designs can be screened to the most demanding military and space applications.
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Step Recovery Diodes
SemiGen’s SSR series of Step Recovery Diodes are epitaxial silicon varactors which provide high output power and efficiencies in harmonic generator applications. Using custom epitaxial wafers, our process ensures high reproducibility. The silicon dioxide passivation process assures greater stability and low leakage currents over temperature. Uniform capacitance ensures repeatability from device to device. These diodes are available in chip or packaged form.
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Doides
Skyworks diode product offering includes PIN, limiter, Schottky, and varactor diodes for a wide variety of microwave applications including WLAN, infrastructure, handset, Satcom, automotive, military, aerospace and defense, test & measurement, metering, medical and RDID.
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Oscillators
TCXO
A TCXO is a emperature compensated crystal oscillator. The basic building block for a TCXO is a VCXO with approximately 50 ppm deviation range and a temperature sensitive network. This temperature sensitive network (temperature compensation circuit) applies a voltage to the varactor diode that corrects the frequency of the VCXO at any temperature within the operating temperature range.
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VCOs with Output Dividers
Analog Devices offers a range of GaAs inGaP heterojunction bipolar transistor (HBT) MMIC VCOs with output divider options to meet your application and design needs. Members of this product line integrate resonators, negative resistance devices, and varactor diodes, while featuring excellent phase noise performance.
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voltage controlled crystal oscillator
VCXO
A VCXO (Voltage Controlled Crystal Oscillator) is a crystal oscillator the output frequency of which is controlled by adding an external control voltage via a frequency control input on a variable capacitance component such as a varactor diode connected in parallel to a load capacitance (CL). Epson VCXOs are divided into two types according to Voltage-Frequency (V-F) characteristic slopes depending on the AFC (Automatic Frequency Control) input configuration of the VCXO. One is a VCXO with a positive V-F slope and the other is a VCXO with a negative V-F slope. Please note that the input voltage of a control circuit will vary according to the individual type, as shown in Figs. 3 and 4. Epson's VCXOs are capable of either, depending on the customer's preference. Epson's VCXOs have been increasingly used for broader applications such as slave oscillators in phased-lock loops, or frequency modulators. Among the above types, a VCXO combined with a TCXO is called a VC-TCXO , respectively. These components have the merit of delicately controlling their output frequency electrically.
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Varactor Tuned Gunn Oscillators
Varactor tuned Gunn oscillators utilize high performance GaAs Gunn diodes and various cavity configurations to deliver moderate output power with low AM/FM noise and harmonic emissions. The oscillators are specially designed for a broader tuning bandwidth and an electrical tuning capability. The standard offering covers the frequency range of 8.2 to 110 GHz and features a self-locking set screw for fine frequency setting. While standard models offer a waveguide interface, a coaxial interface is also available. The performance of the oscillator can be further enhanced by adding an isolator, Gunn oscillator modulator/regulator, and temperature heater.
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Voltage Controlled GUNN Oscillators
GV-8 / GV-6
Voltage controlled GUNN oscillators provide optimal electronic tuning by coupling GUNN with tuning varactor. Oscillators provide low AM and FM noise, making them suitable as local oscillators or transmitters.
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Varactor Tuning Diodes
Macom Technology Solutions Holdings Inc.
MACOM’s GaAs and Silicon varactor tuning diodes provide broadband performance ranging from 10 MHz to 70 GHz. They are ideal for high Q filter and VCO electronic tuning circuits and are available in die form, flip chip, plastic and ceramic packaging. These GaAs diodes boast a constant gamma series for higher frequency and high Q applications and silicon abrupt and hyper abrupt series in plastic packaging are suitable for high volume surface mount applications.
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Fullband Multipliers
RPG offers a new series of high efficient varactor multipliers based on the newest European GaAs Schottky diode technology. High efficiency and outputpower are one of the key features.
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Oscillators
VCXO
A VCXO Voltage-Controlled Crystal Oscillator is a crystal oscillator that''s frequency can be adjusted by an externally applied voltage. VCXO''s have a wide variety of applications in frequency modulation (FM) and phase-locked-loop (PLL) systems. Typical deviation ranges can be 10 ppm to as much as 2000 ppm. The device that allows a crystal oscillator''s frequency to be voltage controlled is known as a varactor diode.
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Oscillators
Ducommun’s oscillator family includes FET based dielectric resonator oscillators (OFD), phase locked oscillators (OPL), Gunn diode based low cost Gunn oscillators (OGL), bias tuned Gunn oscillators (OGB), mechanically tuned oscillators (OGM), varactor tuned Gunn oscillators (OGV), injection locked Gunn oscillators (OGI) and Gunn oscillator bias regulators and modulators (OGR and OMR). In the mechanically tuned Gunn oscillator family, the ultra broadband series (OGF) delivers up to full waveguide tuning bandwidth.
