Patent ID: 9083284
Filing Date: 2015-07-14
Classification: H03F

Abstract:
1. A power amplifier adapted for amplifying an RF signal, comprising: an input for receiving an RF input signal; a divider circuit coupled to the input and receiving the input signal and splitting the input signal into a first input signal and a second input signal; a main signal path coupled to the divider circuit and receiving the first input signal and providing an amplified main signal, the main signal path comprising a main path driver amplifier and a main amplifier, wherein the main signal path further comprises a passive attenuator receiving the first input signal and providing an attenuated first input signal to the input of the main path driver amplifier; and, a peaking signal path coupled to the divider circuit and receiving the second input signal and providing an amplified peaking signal, the peaking signal path comprising a peaking path driver amplifier and a peaking amplifier, wherein the peaking path driver amplifier has substantially the same power rating as the main path driver amplifier and is biased in a higher efficiency class than the main path driver amplifier.