Patent ID: 6522195
Filing Date: 2003-02-18
Classification: H03F

Abstract:
A low noise amplifier, comprising:a first transistor having an emitter coupled to a first power conductor and a collector coupled to a second power conductor; and a bypass circuit having an input coupled to a base of the first transistor and an output coupled to the collector of the first transistor, the bypass circuit including a second transistor having a control terminal coupled for receiving a bypass signal and a first terminal coupled to the input of the bypass circuit, a first inductor having a first terminal coupled to a second terminal of the second transistor, a second inductor having a first terminal coupled to the second terminal of the second transistor and a second terminal coupled to the first power conductor, and a third transistor having a control terminal coupled for receiving the bypass signal, a first terminal coupled to a second terminal of the first inductor, and a second terminal coupled to the output of the bypass circuit.