IMPROVED_RF_ISOLATION_AMPLIFIER

Published:2009/7/6 5:03:00 Author:May | From:SeekIC

Circuit Notes This wideband RF isolation amplifier has a frequency response of 0.5 to 400MHz±0.5dB. This two stage amplifier can be used in applications requiring high reverse isolation, such as receiver intermediate-frequency (IF) strips and frequency distribution systems. Both stages use complementary-symmetry transistor arrangements. The input stage is a common-base connection for the complementary circuit. The output stage, which supplies the positive gain, is a common-emitter circuit using emitter degeneration and collector-base feedback for impedance control.



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