APPARATUS AND METHOD FOR DETECTING RELATIVE PHASE

Abstract: the present disclosure relates to an apparatus and a method for detecting a relative phase. the apparatus includes: a signal superposition unit configured to receive and switch a first input signal and a second input signal having a phase delay �with respect to the first input signal so that the first input signal and the second input signal pass through a sensing resistor or a sensing capacitor, respectively, and to superpose and output the passed signals; a signal power detection unit configured to detect power of the signal output from the signal superposition unit; and a differential signal detection unit configured to generate a differential signal for the power of the signal output according to the switching of the first input signal and the second input signal in the signal superposition unit, and to detect the differential signal that changes according to the phase delay �.

Inventor(s): Seunghyun Jang, Sunwoo Kong, Bong Hyuk Park, SEUNG HUN WANG, HUI DONG LEE, Jung Hwan Hwang

CPC Classification: G01R25/00 (Arrangements for measuring phase angle between a voltage and a current or between voltages or currents)

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