Patent ID: 8165836
Filing Date: 2012-04-24
Classification: H04L

Abstract:
1. A measurement apparatus that measures, as an error under measurement, at least one of a gain error and a phase error of a quadrature demodulator or a quadrature modulator serving as a measurement target, the measurement apparatus comprising: an output control section that causes the measurement target to output a signal; a detecting section that detects a measured signal representing a real component and an imaginary component of the signal output from the measurement target; and a calculating section that calculates, as the gain error or the phase error, based on (i) the measured signal detected by the detecting section and (ii) an ideal signal that represents the measured signal that should be output by the measurement target and includes a variable representing the error under measurement, a value of the variable that maximizes a correlation value between the measured signal detected by the detecting section and the ideal signal.