Error signal extraction method using an automatic calibration formula RF correlator

摘要

(57) RF input terminal of the RF input signal is connected and (11) [Abstract] radio frequency (RF) amplifier having an output terminal for an amplified RF output signal comes out. RF carrier compensation mixer (23) is (21) the first input signal leading to (11) RF input terminal (22), the second input signal, leading to the RF output terminal. RF carrier compensation mixer (23), generating a (24) RF error signal corresponding to the RF distortion amount between the signal paths leading to the RF output terminal through the RF amplifier from (11) RF input terminal. In order to reduce the remainder of the carrier signal RF error signal (24), the broadband automatic calibrating correlator, the correlation reference signal representing the (component) RF input signal (31), RF error signal (24) and generates a control signal to take. Is supplied to the vector modulator (12), the control signal to correct the signal path through the RF amplifier. Digital signal processing apparatus is in the correlator (100), so as to remove the DC distortion from the control signal by measuring the direct current distortion due to the (operating) of the multiplexer of the correlator, the compensation of the carrier component is maximized It is to be managed with high accuracy, the correction of the path signal in the vector modulator (12) is carried out through the RF amplifier.