Patent ID: 9419563
Filing Date: 2016-08-16
CPC Classification: H03F,H04W

Claim Text:
1. An RF amplifier, comprising: an input amplifier comprising: a transistor arrangement; an output impedance arrangement; a degeneration impedance arrangement to provide degeneration; and a feedback impedance arrangement, wherein the degeneration impedance arrangement is purely reactive and the output impedance arrangement comprises a purely reactive arrangement matched in frequency behaviour to the degeneration impedance arrangement; and a buffer amplifier having as input the output of the input amplifier ( wherein the degeneration impedance arrangement and output impedance arrangement comprise inductors; wherein the inductor of the output impedance arrangement has an output tap between the ends of the inductor, and the first amplifier output comprises the output tap such that the buffer amplifier is connected to the input amplifier at the output tap.