Patent ID: 7630693
Filing Date: 2009-12-08
Classification: H03F,H03H,H04B

Abstract:
1. A power amplifier (PA) line-up comprising: a driver having a driver output; a PA having a PA input and a PA output; a first matching circuit having a first matching circuit output coupled to the PA input and having a first matching circuit input, the first matching circuit configured to receive a signal from the driver output and impedance match the signal to the PA input and the driver output; a second matching circuit having a second matching circuit input coupled to the PA output, a third matching circuit input, and a second matching circuit output configured to be coupled to a filter input, the second matching circuit configured to impedance match the signal to the filter input and at least one of the PA output and the driver output; a first transmission line coupled to the third matching circuit input; and a first switch coupled to the driver output, the first switch having a first switch output configured to selectively couple the driver to one of the second matching circuit via the first transmission line and the first matching circuit based upon a pre-determined output power level for the signal.