Patent ID: 8190099
Filing Date: 2012-05-29
Classification: H03F

Abstract:
1. A bi-directional amplifier for amplification of signals received or signals to be transmitted in a communication circuit, comprising: at least one first biased semiconductor amplification element coupled to a first impedance matching network; at least one second biased semiconductor amplification element coupled to a second impedance matching network; a first device for biasing said at least one first biased semiconductor amplification element and a second device for biasing said at least one second biased semiconductor amplification element wherein the direction of signal amplification in said bi-directional amplifier is controlled by said first or said second device for biasing said at least one first or second biased semiconductor amplification element; said first impedance matching network is a first common impedance matching network for said at least one first biased semiconductor amplification element and for said at least one second biased semiconductor amplification element; said second impedance matching network is a second common impedance matching network for said at least one first biased semiconductor element, wherein