Patent ID: 6359508
Filing Date: 2002-03-19
Classification: H03F

Abstract:
An RF power amplifier arrangement comprising:an RF input port to which an RF input signal is applied; an RF output port from which an amplified RF output signal is derived; a main RF signal path containing an RF power amplifier between said RF input and output ports; a carrier cancellation combiner coupled to said RF input port and an output path from said RF power amplifier; a feedforward error correction and reinjection path containing an auxiliary RF error amplifier coupled between said carrier cancellation combiner and said output path from said RF power amplifier; a frequency swept input receiver coupled to monitor energy contained in said RF input signal; a frequency swept output receiver selectively coupled to monitor energy in one of said output path from said RF power amplifier and an output of said carrier cancellation combiner; and a control unit which is operative to selectively couple said frequency swept output receiver to one of said output path from said RF power amplifier and said output of said carrier cancellation combiner, so as to monitor energy received by said frequency swept output receiver, and control characteristics at least one of said main RF signal and feedforward error correction and reinjection paths.