Patent ID: 8008970
Filing Date: 2011-08-30
Classification: G05F,H01L,H02M,H03F,H03G,H03H,H03K,H04B

Abstract:
1. An apparatus for controlling one or more power amplifiers, the apparatus comprising: a first complimentary metal oxide semiconductor (CMOS) switch having a gate, a drain, a source, and a well, the source and drain formed in the well, the gate formed adjacent the well between the source and drain, and the source configured to receive a radio frequency signal from a first power amplifier; a switch enable detect block configured to compare a signal indicative of the gate voltage of the first switch to a first reference signal and to generate an output comparison signal based at least partly on the result; and a power amplifier bias control block configured to enable the first power amplifier based at least partly on the output comparison signal from the switch enable detect block.