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Bias Tees for Radio Amateurs
Bias Tee for remote power supply of preamplifiers and converters via the coaxial cable.
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RF & Microwave Passive Components
SHF Communication Technologies AG
SHF’s microwave components are broadband devices suitable up to 110 GHz. Our SHF BIAS TEES are well known but perhaps a slight variation does suit your application even better. DIPLEXERS are bias tees with a certain bandwidth in the low frequency path to combine or separate high frequency and low frequency signals into or out of a single line. DC-FEEDERS are bias tees without the capacitor. Therefore, it provides slightly lower insertion loss in case it is connected to an AC-coupled device which already has a capacitor on its input. Based on our air line construction, these passive components provide resonance-free transmission over the entire operating range.
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Bias Tees
Mini-Circuits is your complete source for bias tees, handling up to 4 Amps DC and covering 100 kHz to 12 GHz!Rugged coaxial modelsTiny surface mount packages as small as 0.15 x 0.15 inExcellent isolation50 and 75 Ohm models
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Bias Tees
A bias tee is a three-port network used for setting the DC bias point of some electronic components without disturbing other components. The bias tee is a diplexer.
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High-Power Low-Loss Pulsed Bias Tees
MBT series
The MBT-series of bias tees is based on Maury's patented broadband capacitor (US Patent 9,614,267) which simultaneously enables the industry's widest bandwidth, lowest insertion loss and lowest return loss in a coaxial bias tee up to 18 GHz. In addition, its unique design makes it ideal for pulsed applications, including pulsed IV and pulsed load pull characterization, without distorting the voltage and current waveforms.
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Bias Networks
RF and microwave bias networks are used in a wide variety of biasing applications for test and measurement requirements in laboratory and production environments. Bias networks provide the means of supplying DC bias to the center conductor of the coax connector for your device while blocking the DC to the RF ports.
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Automatic Bias Controller
MATRIQ-IQABC
Optimizing DC bias points of an IQ modulator is no trivial task. There are six different Mach-Zehnder structures inside one dual polarization IQ modulator, all simultaneously influencing the properties of a single optical signal. Trying to optimize bias points using just the intensity measurement of the optical signal is time consuming, inaccurate and it requires a lot of knowledge and experience.
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DC Bias Current Source
FD1772B
• Constant DC output 0-6A• Auto or manual current sweep output• 5 current range output• Output voltage range: 0-11.5V• Current accuracy ± (1%reading + 2digit)
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RF Bias Burn-In System
These systems deliver an unbeatable combination of advantages over a wide range of RF frequencies and power levels. The Automated Multi-Channel RF-Biased Burn-In Test System is a turnkey system that incorporates all of the capability needed for accelerated aging and parametric testing of RF semiconductor devices. Its powerful software elegantly supports data acquisition, storage, and presentation. Accel RF’s customers choose system features to meet their technical needs and capital budget. In addition to cost savings, use of Accel-RF’s solutions accelerate product time-to-market, saving many months of product development.
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DC Bias Current Source
DU2020/2030/2040
Delta United Instrument Co., Ltd.
Frequency: 10KHz - 200KHz Veracity:3% + 3 digitsTiming: 0.1 - 999 H, settable 3 1/2 bits LCD Display
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Regulators For Bias Supply
Renesas' low cost linear regulators generate a low voltage bias supply from intermediate distributed voltages commonly used in telecom and datacom applications. These devices may be used as start-up or as continuous low power regulators.
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110 GHz Frequency Extender, Pulsed DC Bias
N5293AX02
The N5293AX02 is a compact and broadband frequency extender with built-in pulsed bias-tee and provides 10 MHz to 110 GHz single-sweep measurements with N5292A test set controller systemized with a PNA/PNA-X B vector network analyzer.
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120 GHz Frequency Extender, Pulsed DC Bias
N5295AX02
The N5295AX02 is a compact and broadband frequency extender with built-in pulsed bias-tee and provides 10 MHz to 120 GHz single-sweep measurements with N5292A test set controller systemized with a PNA/PNA-X B vector network analyzer.
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200 Vdc External Voltage Bias Fixture
16065A
Measure a DUT with up to +/-200 V DC bias and also measure axial/radial lead components
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DC Bias Current Power Supply
TH1775
Shenzhen Chuangxin Instruments Co., Ltd.
TH1775 is a DC Bias Current Source (or DC Magnetization Current Source) used for inductance measurement of inductors and transformer windings with DC bias current. Except for constant current output, low additional error and wide frequency response range are important for bias current inductance measurement. High frequency LCR meter could be used, when the frequency response range is wide enough. MPU controlled auto current balance technology is adopted to realize AC+DC current overlap and constant current output from 0 to ±20A. Two TH1775 can be paralleled to supply a maximum current up to 40A.TH1775 permits high frequency measurement up to 1 MHz and can be directly controlled by TH2816A, TH2817A, TH2818 and TH2819. TH1773/TH1775 with its low additional error, wide frequency response range and sweep output function is widely used in DC biased inductance measurement. TH1775 also provides a perfect solution for magnetic material analysis.
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Low Input Bias Current Op Amps (≤100 pA)
Low input bias current op amps are required whenever the difference of currents or voltage is small and needs to be measured accurately. These op amps are used so that the signal is not loaded down by the input of the op amps. Low input bias current op amps are critical for interfacing sensors in applications from photodiodes, pH meters, or other electrometer related functions to downstream electronics. Analog Devices has many precision op amps that fit the definition and range of these applications.
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External DC Bias Adapter
16200B
The 16200B test fixture is designed to operate with high frequency LCR meters and impedance analyzers. It allows you to supply a bias current across the device of up to 5 Adc through a 7 mm port by using an external DC current source.
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High Power Switch and Bias Module
Macom Technology Solutions Holdings Inc.
MACOM’s High-Power Switch and Bias modules are extensively used in 4G and 5G TDD base stations as well as aerospace and defense applications. The PIN Diode Switch features high power handling, low insertion loss, and super board band performance. The integrated bias controller utilizes a boost circuit and provide the driver circuitry to the switch. The modules require only a single 5 V supply, and a single TX / RX control signal which greatly reduced the customer design complexity.
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RF Amplifiers Bias Controllers
RF amplifier bias controllers generate a regulated drain voltage and actively adjusts the gate voltage of an external amplifier to achieve constant bias current. It can be used to bias any enhancement and depletion type amplifier operating in Class-A regime with drain voltages (VDRAIN) as specified. These devices achieve excellent bias stability over supply, temperature and process variations, and eliminates the required calibration procedures used to prevent RF performance degradation due to such variations.
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Zero Bias Schottky Detectors
KRYTAR Zero Bias Schottky Detectors are specifically designed for use in today's high-performance microwave instrumentation and systems. KRYTAR detectors are designed for such applications as power measurements, analyzing radar performance, leveling pulsed signal sources, AM noise measurements, system monitoring and pulsed RF measurements in ultra-broadband and mm-Wave applications.
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DC Bias Attenuators
a fixed DC Bias attenuator from Pasternack. This 10dB attenuator is an in-line, resistive PI attenuator pad design. Our coaxial 50 Ohm attenuator is manufactured to precise RF / microwave industry specifications.
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Millimeter Wave Zero Bias GaAs Schottky Diode
HSCH-9161
The HSCH-9161 is suitable for medium-low barrier, zero bias detector applications. The HSCH-9161 is functional through W-band (110 GHz) and can be mounted in microstrip, finline, and coplanar circuits.
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Four Channel Low-Noise DC Bias Card
PI-41702
The PI-41702 is a four channel bipolar DC Bias supply that can provide an output current up to 100 mA per channel. The output voltage ranges from –8 V to +8 V, and this card has special filter circuitry to reduce the output noise for those applications that require a low noise bias output. Additionally there is a ‘D’ type connector that allows the introduction of laboratory type supplies to reduce the noise further. To change from using the internal power supplies to external power supplies requires repositioning jumpers. The PI-41702 also has voltage and current sense for remote measurement of the voltage and current levels.
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Bias Network, 45 MHz to 50 GHz
11612B
The Keysight 11612B broadband high power bias network can be used in a wide variety of biasing applications for test and measurement requirements in laboratory and production environments. Bias networks provide the means of supplying dc bias to the center conductor of the coax connector for your device while blocking the dc to the RF port.
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Zero Bias Schottky Detectors
Fairview Microwave’s line of coaxial packaged zero bias Schottky detectors feature matched inputs for excellent VSWR, voltage sensitivity levels that range from 100 to 500 mV/mW for small signal detection, negative video output polarity, and can withstand maximum input power levels up to +20 dBm CW. Operating temperature range covers 0°C to +90°C and storage temperature of -65°C to +125°C. These zero bias Schottky detectors utilize compact cylindrical package outlines that are made of passivated stainless steel and offer a variety of popular input/output SMA and BNC connector configurations that make them ideal for use with precision test and measurement, instrumentation, and subsystems assemblies. Numerous applications include power measurement, leveling pulsed signal sources, AM noise measurements, radar or missile guidance systems, monitoring system level performance, and pulsed RF measurements.
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Low Input Bias Current Amplifiers (<100 pA)
Low input bias current op amps are required whenever the difference of currents or voltage is small and needs to be measured accurately. These op amps are used so that the signal is not loaded down by the input of the op amps. Low input bias current op amps are critical for interfacing sensors in applications from photodiodes, pH meters, or other electrometer related functions to downstream electronics. Analog Devices has many precision op amps that fit the definition and range of these applications.
