DIGITALLY CONTROLLED PHASE SHIFT METHOD AND DIGITALLY CONTROLLABLE PHASE SHIFTER CIRCUIT FOR CONTINUOUSLY VARIABLE LENGTH DELAY LINE

摘要

PURPOSE: To provide the method and device for overall digital full range phase shift. CONSTITUTION: Self-calibration delay line method and device which are digitally controlled overall continuously discriminate a terminal in a physical position (ESP) in a delay line to simulate the infinitely long delay line, and this position is precise place where a signal reciprocating in the delay line has the phase shifted by 360 deg. with respect to a means which connects a phase detector input and the ESP terminal to a first stage of the delay line.