Patent ID: 9197169
Filing Date: 2015-11-24
Classification: H03F

Abstract:
1. An amplifier, comprising: a front end stage including a transistor; at least one downstream stage including a transistor, wherein the downstream stage and the front end stage are connected in series in DC mode between a power supply and a ground; and a shunt block connected in series to the downstream stage and in parallel to the front end stage, wherein a DC current flowing in the front end stage is smaller than a DC current flowing in the downstream stage, wherein the downstream stage includes a first stage and a second stage connected in series in the DC mode to the first stage, each of the first stage and the second stage including a transistor, wherein the amplifier further comprises another shunt block connected in series between the second stage and the ground, the another shunt block being connected in parallel to a circuit of the first stage and the front end stage connected in series to the first stage.