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Title:
STRAIN PHASE MEASURING APPARATUS, DOWN CONVERTER, LOW STRAIN POWER AMPLIFIER, AND PROGRAM
Document Type and Number:
Japanese Patent JP2002228694
Kind Code:
A
Abstract:

To accurately measure the phase shift quantity of a strain component with a strain phase measuring apparatus in the case where the sizes of strain components are different from each other.

The strain measuring apparatus is provided with a frequency range conversion means 105 for converting digital signals having a strain component by using Fourier transform, and a phase calculation means 106 for calculating the phase shift of the strain component based on the result of the transform with the frequency range conversion means 105.


Inventors:
MATSUURA TORU
ADACHI HISASHI
ISHIDA KAORU
Application Number:
JP2001026085A
Publication Date:
August 14, 2002
Filing Date:
February 01, 2001
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G01R23/20; G01R23/14; G01R23/165; G01R25/00; H04L25/02; (IPC1-7): G01R23/20; G01R23/14; G01R23/165; G01R25/00; H04L25/02
Attorney, Agent or Firm:
Masamichi Matsuda