Filter / Amplifiers
See Also: Filters, EMI Filters, Low Pass Filters, Programmable Filters
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Limiting Amplifiers
Chengdu KeyLink Microwave Technology Co., Ltd.
Keylink's limiting amplifiers use FET device with good consistency and distributed traveling wave amplifying circuit to design. Good amplitude and phase consistency characteristics can be achieved in a wide input dynamic range. It's the key component of the electronic system. Keylink's limiting amplifiers can be categorized as follows.
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Isolation Amplifiers
Knick Elektronische Messgeräte GmbH & Co. KG.
Unipolar and bipolar DC input signals 20 mV to 200 V and 0.1 mA to 100 mA calibrated range selection. Working voltage up to 1000 V AC / DC.
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MOSFETs For Amplifier
These are enhanced power MOSFETs with excellent frequency characteristics. They are ideal for audio amplifier output.
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Linear Amplifiers
Advanced Science and Novel Technology, Co., Inc.
Broadband (DC-12GHz) linear amplifier for receiver-side applicationsFeatures controlled gain from 0dB to 31.5dBFeatures input offset adjustment and input peak detectorFully differential input interface with on-chip 50Ohm terminationFully differential output interface with on-chip 50Ohm terminationOutput 1dB compression point of 1.5dBm3rd Harmonic better than -47dBc within the full bandwidth15dB Noise FigureSingle +3.3V or -3.3V power supplyPower Consuption: 530mW typicalFabricated in SiGe for high performance, yield, and reliabilityCustom CQFP 24-pin package
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C & L-Band Separate Raman Fiber Amplifier
RFA7000
Hangzhou Huatai Optic Tech. Co., Ltd.
1. Erbium-doped Fiber Amplifier, due to the multiple cascades and the accumulation of noise caused by spontaneous emission, will reduce the system CNR greatly and thus it will limit the transmission capacity and distance of the system. Raman Fiber Amplifier (RFA) is a newly designed fiber amplifier based on Stimulated Raman Scattering (SRS) effect. It is considered as the core technology of new generation DWDM fiber over-long communication. Compared with Erbium-Doped Fiber Amplifier, Raman amplifier has the advantage of low Noise Figure (NF), wider gain bandwidth, flexible gain spectral region and stable temperature. It is the only device that can operate in 1300~1600 nm.
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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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Broadband Power Amplifier
PAS-08042-60
* Solid State Power Amplifier* Small Signal Gain: 60 dB typ.* Rack Mount Case* Internal Cooling Fans*Type N Connectors* Over-voltage, over-current protections
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RGB 1×3 Video Distribution Amplifier
VDA403
Video Distribution Amplifiers (sometimes called a video splitter – not to be confused with a video split screen controller such as our PXD510E split screen controller) are typically used for connecting a camera or other video source to several monitors that do not have “looping” inputs. In this situation, each monitor has a permanent 75 ohm termination. With two non-looping monitors connected together, the line would be double loaded and result in a dim picture on each monitor. Using a Video Distribution Amplifier will solve this problem by driving each monitor individually at 100%.The second application is when the video signal is run over distances greater than 50 feet. The coaxial cable has a fair amount of signal loss over long distances. When multiple monitors are connected after long runs of coax, the degradation can be severe, especially when dealing with modern, high bandwidth signals that have 500+ lines of resolution.The VDA403 is a Video Distribution Amplifier designed for professional applications. It will operate with NTSC & PAL video signals as well as many common Black & White signals. These units use the latest integrated amplifier technology for superior performance and reliability. Custom units or modifications can be manufactured at a reasonable cost.
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Single Channel High Voltage Linear Amplifier
A400
The A400 is a general purpose broadband linear amplifier having a fixed amplification of 20 times and capable of bipolar high voltage output of 200. Any functiongenerator or arbitrary waveform generatoror any othe signal source with amplitude up to 10 V can be used as an input device. The amplifier's output is linear from DC up to megahertz range. It can be used in a wide range of applications, for example to drive piezo actuators, MEMS, OLEDs, liquid crystals, etc.
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Notch Filters
MINI-POLE Notch Series
MINI-POLE® Notch Filters are optimized for small physical size and low power consumption. Two standard package styles are available (PC-Mount and SMA).
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High Frequency Tunable Bandpass Filters
CTB Series
Tunable Ranges Up To 8 GHz. Bandwidths 1% to 5% of Tuned Center Frequency. Digital Control Offered in Various Inputs, including GPIB (standard), RS-232, RS-422, and USB. Custom Interfaces Available.
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Hybrid Raman/Er-doped Fiber Amplifier
HFA5000
Hangzhou Huatai Optic Tech. Co., Ltd.
1. Erbium-doped Fiber Amplifier, due to multiple cascades and the accumulation of noise caused by spontaneous emission, will reduce the system CNR greatly and thus it will limit the transmission capacity and distance of the system. Raman Fiber Amplifier (RFA) is a newly designed fiber amplifier based on Stimulated Raman Scattering (SRS) effect. It is considered as the core technology of new generation DWDM fiber over-long communication. Compared with Erbium-Doped Fiber Amplifier, Raman amplifier has the advantage of low Noise Figure (NF), wider gain bandwidth, flexible gain spectral region and stable temperature. It is the only device that can operate in 1300~1600nm.
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Linear High Efficiency Power Amplifier
Chengdu KeyLink Microwave Technology Co., Ltd.
Keylink's high efficiency linear power amplifiers are available for operating frequencies from 1MHz to1 GHz with output power from 1 to 100 watts. Combined with linear design, these linear power amplifiers provide ultra low distortion, suitable for multi-band, multi-mode communication applications. With built-in monitor circuits, Keylink's power amplifier assure consistent performance in terms of reliability. KeyLink's linear power amplifiers can be categorized as follows:
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Wide Band Filters (multi-octave)
ERF-5W™ Series (Single & Dual)
The new ERF-5W™ filter takes Pole/Zero’s MINI-ERF® technology to a higher level of RF power handling, with 5W (average) in-band power handling, and covering the entire military tactical radio tuning range of 30-520 MHz in one integrated package. This tunability is accomplished by the use of three poles of selectivity, multiple internal tunable filters along with high performance PIN diode RF band select switches. The tunable filters are designed to minimize size and power consumption, while maintaining high RF power handling and linearity characteristics. Serial control is accomplished via a standard Serial Peripheral Interface (SPI)-based bus.
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Filter Products
Although a primary building block for duplexers, multicouplers and preselectors, these cavities filters can be used individually or cascaded together to prevent interference or system clean up. Our cavity filter product line consists of four model types.
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Logarithmic Video Amplifiers
DLVAs, ERDLVAs & SDLVAs
PMI’s Detector Logarithmic Video Amplifiers (DLVA, ERDLVA, SDLVA) are offered covering DC to 40 GHz with extended range models offering dynamic ranges over 70 dB. Our standard products provide exceptional temperature stability, log linearity and frequency response. As well, most SDLVAs provide a limited IF output. PMI offers custom DLVA’s and SDLVA’s to meet your requirements or replace obsolete products, please email your requirement to sales@pmi-rf.com so we can propose an instant solution.
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H2S Trip Amplifier Module
TA202A
The TA202A is a single-channel H2S Trip Amplifier Module for use with our H2S Intelligent Sensors. It is designed to monitor H2S in parts per million (ppm) levels and provide status indication and alarm outputs.
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2- to 8-Channel Anti-Alias Low-Pass Filter and Instrumentation Amplifier Card
AAF-3
The AAF-3 is a 2- to 8-channel anti-alias low-pass filter and instrumentation amplifier ISA bus plug-in board for front-end signal conditioning in PC-based data acquisition systems.
