Patent ID: 9685915
Date: 2017-06-20
CPC Classifications: H03F

Claim:
1. An amplification stage for use in a power amplifier and for amplifying a signal in a bandwidth around an operational frequency, the amplification stage comprising: a stage input terminal for receiving a signal to be amplified; a stage output terminal for providing an amplified signal; an amplifier comprising an amplifier input terminal and an amplifier output terminal, the amplifier configured to amplify a signal received at the amplifier input terminal towards a signal provided at the amplifier output terminal; an input compensation network configured to allow a wideband operation of the amplification stage around the operational frequency, the input compensation network arranged in between the stage input terminal and the amplifier input terminal, the input compensation network comprising a first series arrangement of a first inductor and a first capacitor, the input compensation network further comprising a second inductor and a second capacitor, the first series arrangement coupled between the stage input terminal and the amplifier input terminal, the first series arrangement to transfer the signal received at the stage input terminal with a zero phase shift of the signal, the second inductor coupled between the amplifier input terminal and a first supply voltage terminal coupled to a supply voltage, and the second capacitor coupled between the first supply voltage terminal and a ground voltage; and an output compensation network configured to allow a wideband operation of the amplification stage around the operational frequency, the output compensation network arranged in between the amplifier output terminal of the amplifier and the stage output terminal, the output compensation network comprising a second series arrangement of a third inductor and a third capacitor, the output compensation network further comprising a fourth inductor and a fourth capacitor, the second series arrangement coupled between the amplifier output terminal and the stage output terminal, the fourth inductor coupled between the amplifier output terminal and a second supply voltage terminal coupled to the supply voltage, and the fourth capacitor coupled between the second supply voltage terminal and a ground voltage.