WIDEBAND POWER AMPLIFIER CONTROL SYSTEMS

摘要

A control scheme is implemented to improve the transmission quality of a wideband output signal (132) transmitted by a power amplifier (100) in a wideband communication system. The scheme utilizes a control processor (502) to instruct a pair of digital-to-anallog converters (538, 542) to control carrier cancellation in a carrier cancellation block (104). The control processor (502) also instructs a different set of a digital-to-analog converters (546, 550) to control intermodulation product cancellation in an intermodulation product cancellation block (133). By optimizing cancellation of both the carrier and the intermodulation products, the linearity of the power amplifier (100) is improved.