FIELD: radio engineering, communication.
SUBSTANCE: signal amplification device, having an amplifier, wherein the amplifier comprises: an output stage formed of a positive output terminal providing a positive output voltage and a negative output terminal providing a negative output voltage; a load tank connected in parallel with the output stage and configured to filter signals received at the amplifier; and a negative resistance unit connected in parallel with the output stage and the load tank and having a tunable negative resistance. The method describes operation of said device.
EFFECT: improved selectivity of receiver input stages, suitable for wireless communication.
27 cl, 11 dwg
