Patent ID: 7616941
Filing Date: 2009-11-10
Classification: H03F,H04B

Abstract:
1. A method for amplifying signals in a wireless communication system, the method comprising: determining a bias current level for a power amplifier circuit within an integrated circuit (IC) die based on an amplitude of an input modulation signal; and generating an output signal from said power amplifier circuit based on a differential input signal to said power amplifier circuit and said input modulation signal; wherein a generated bias voltage level is applied to a transformer external to said IC die, but internal to one or both of an IC package containing said IC die and/or a circuit board containing said IC package; wherein at least one amplifier bias voltage level is applied to said power amplifier circuit, and wherein said at least one amplifier bias voltage level is derived from one or both of said generated bias voltage level applied to said transformer and/or said determined bias current level.