Patent ID: 8280325
Filing Date: 2012-10-02
Classification: H04B

Abstract:
1. An apparatus configurable to operate in either a separate power amplifier configuration or a combined power amplifier configuration, the apparatus comprising: a transformer including: a first transformer winding coupled to first and second differential inputs; and a second transformer winding coupled to a first single-ended output and a second single-ended output; a first switch coupled to the first single-ended output of the transformer; a second switch coupled to the second single-ended output of the transformer; wherein the transformer, while configured to operate in the separate power amplifier configuration, is configured to either output a signal associated with a first operating mode onto the first single-ended output of the transformer or output a signal associated with a second operating mode onto the second single-ended output of the transformer; and wherein the transformer, while configured to operate in the combined power amplifier configuration, is configured to output signals associated with the first operating mode and/or the second operating mode onto the first single-ended output of the transformer, and with the second single-ended output being unused.