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Linearized Channel Amplifiers

The L3 Narda Microwave-West Linearized Channel Amplifier (LCAMP) is a wideband Traveling Wave Tube Amplifier (TWTA) driver which operates in S-, C-, X-, Ku-, or Ka-Band frequency ranges. The LCAMP consists of a channel amplifier assembly and a linearizer assembly which are mounted on a common baseplate. The RF output of the channel amplifier assembly is connected to the RF input of the linearizer assembly with an SMA coaxial cable.

Features

  • Frequency band designs: S-, C-, X-, Ku- and Ka-Band

  • 5 dB typical gain enhancement

  • 40 degree typical phase advance

  • Output power adjustment (6 dB minimum)

  • Low-power consumption

  • Weight: < 180 g

  • Blanking mode available

The channel amplifier can operate in a Fixed Gain Mode (FMC) or an Automatic Level Control (ALC) mode. The unit has commandable gain and ALC levels. Pulse or serial command inputs are used to increase or decrease the gain in the Fixed Gain Mode (FMC), increase or decrease the power in the ALC mode, and select the mode of operation. An RF telemetry output monitor can be included, which will provide a calibrated DC voltage to provide information on the output power level of the channel   amplifier in the Fixed Gain Mode (FMC).  An RF telemetry input monitor can be included, which will provide a calibrated DC voltage to provide information on the input power level of the channel amplifier in the ALC mode. The unit is constructed using a thin-film amplifier, attenuator, coupler/detector, micro-strip bandpass filter and control circuits. The thin-film modules are enclosed in a laser-sealed, hermetic aluminum housing. The housing has two SMA RF connectors and a 15-pin Micro-D connector for DC/command interface. The linearizer acts as an amplitude and phase predistortion generator to extend the linear operating range of the TWTA. The unit is constructed using thin-film amplifier, attenuator, equalizer, linearizer and control circuits. The thin-film modules are enclosed in a laser-sealed, hermetic aluminum housing. The housing has two SMA RF connectors and a 15-pin Micro-D connector for DC/command interface.

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