Patent ID: 9537457
Date: 2017-01-03
CPC Classifications: H03F

Claim:
1. An amplifier comprising: an input terminal configured to receive an input signal; an output terminal configured to drive an output signal; a first transistor comprising a first input contact coupled to the input terminal and a first output contact coupled to the output terminal; a second transistor including a second input contact coupled to the input terminal and a second output contact coupled to the first output contact of the first transistor and the output terminal; a current bias component, coupled to the first input contact of the first transistor, configured to provide a bias current to the first transistor and the second transistor along a same current path; a capacitor component, coupled between the first input contact of the first transistor and the second input contact of the second transistor, configured to short the input signal between the first input contact and the second input contact at an operating frequency range and provide the input signal to the first input contact and the second input contact; and a feedback path coupled between the output terminal and a first control contact of the first transistor or coupled between the output terminal and a second control contact of the second transistor, wherein the feedback path is configured to control a first bias to the first transistor or a second bias to the second transistor based on a reference voltage.