Patent ID: 8872586

Claim:
An amplifier, comprising: a first current-gain transistor having a gate coupled to an input of the amplifier; a second current-gain transistor having a gate coupled to the input of the amplifier via a first gain path; a first cascode transistor having a source coupled to a drain of the first current-gain transistor and a drain of the second current-gain transistor, a gate coupled to a first DC bias voltage, and a drain coupled to a gain output of the amplifier; a third current-gain transistor having a gate coupled to the input of the amplifier via a second gain path; a second cascode transistor having a source coupled to a drain of the third current-gain transistor, a gate coupled to a second DC bias voltage, and a drain coupled to the gain output of the amplifier; a first resistor coupled between the gate of the second current-gain transistor and a third DC bias voltage; and a second resistor coupled between the gate of the third current-gain transistor and a fourth DC bias voltage, wherein the third DC bias voltage is different from the fourth DC bias voltage.