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Broadband amplifier based on the KT3115A transistor. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Antenna amplifiers

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A simple broadband antenna amplifier provides a gain of about 10 dB over the entire range allocated for television broadcasting.

The amplifier is a cascade with a common emitter and deep negative feedback through R1 C2, as well as emitter correction R5 R6 C5 C6. The amplifier is powered by cable. The R4 C3 antiparasitic circuit ensures the stability of the antenna amplifier at high SWR in the cable, which is possible when the input impedance of the TV is significantly different from the wave impedance of the cable.

Broadband amplifier based on the KT3115A transistor. Broadband amplifier

Schematic diagram of the amplifier

Publication: cxem.net

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