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Patent Searching and Data


Title:
DETECTOR FOR AMPLITUDE AND PHASE
Document Type and Number:
Japanese Patent JPH07225249
Kind Code:
A
Abstract:

PURPOSE: To obtain a detector for amplitude and phase by which the amplitude and phase of AC signal can be detected at a high speed without phase delay.

CONSTITUTION: The frequency of AC signal v detected by a AC signal detecting means 4 is used to calculate the AC signal whose phase is changed in only phase characteristic through a calculation circuit 14 having a specified phase characteristic , and at the same time a cosine of phase characteristic is multiplied to the AC signal v detected by the means 4 and the result that the AC signal having a changed phase is subtracted from the multiplied result is multiplied with an inverse number of a sine of the phase characteristic .


Inventors:
FUJII TOSHIYUKI
TAMAI SHINZO
NAITO HATSUHIKO
TOKI NAOHIRO
Application Number:
JP1660794A
Publication Date:
August 22, 1995
Filing Date:
February 10, 1994
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01R19/00; G01R19/04; G01R25/00; G01R31/42; H02H3/08; H02H3/26; (IPC1-7): G01R19/04; G01R25/00
Attorney, Agent or Firm:
Hiroaki Tazawa (1 person outside)