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1. US20190154742 - PHASE ANALYSIS CIRCUIT

Office United States of America
Application Number 15765556
Application Date 27.09.2017
Publication Number 20190154742
Publication Date 23.05.2019
Publication Kind A1
IPC
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
25
Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
G01R 25/00
CPC
G01R 25/005
Applicants MARCdevices Co., Ltd.
Inventors Koichi HIRAMA
Title
(EN) PHASE ANALYSIS CIRCUIT
Abstract
(EN)

A parallel phase shift circuit is configured to perform a phase shift process in parallel on an input signal pair including a first I signal orthogonal to a first Q signal, in accordance with a phase difference among a set of n multi-phase separation frequency signal pairs including a set of second I signals orthogonal to a set of second Q signals, to generate a set of n phase-shifted orthogonal signal pairs including a set of third I signals orthogonal to a set of third Q signals; and a phase discrete continuous measurement circuit configured to, based on the n phase-shifted orthogonal signal pairs from the parallel phase shift circuit, generate a set of discrete signals being n discrete values and generate a set of continuous tangent signals being a set of a desired number of signals interpolating the set of discrete signals.