Patent ID: 8160520
Filing Date: 2012-04-17
Classification: H03F,H03G

Abstract:
1. An apparatus comprising: a first gain stage to receive a first incoming signal and to output a first amplified signal; a linear regulator coupled to the first gain stage to provide a first regulated voltage to the first gain stage; a second gain stage to receive a second incoming signal and to output a second amplified signal; a switching regulator coupled to the second gain stage to provide a second regulated voltage to the second gain stage; and an output network coupled to the first and second gain stages to switchably couple one of the first and second amplified signals to an output load, the output network including a first transformer having a first turns ratio coupled to the first gain stage and a second transformer having a second turns ratio coupled to the second gain stage, the first turns ratio greater than the second turns ratio to provide a different effective output load to the first and second gain stages.