Title:
位相測定装置、方法、プログラムおよび記録媒体
Document Type and Number:
Japanese Patent JP4656652
Kind Code:
B2
Abstract:
When a signal having two or more frequency components is fed to a circuit to be measured, a phase of the signal output from the circuit to be measured is measured. A phase measurement device measures an output when an input signal having two input frequency components omega 10 and omega 20 is fed to an amplifier (circuit to be measured). The phase measurement device includes an orthogonal converter that subjects the output of the amplifier to an orthogonal conversion using an average frequency omega 0 , which is an average of omega 10 and omega 20 . A phase acquisitioner acquires phases theta 1 and theta 2 of the input frequency components in the output of the orthogonal converter and a phase theta 3 of a distortion component. A match time/phase measurer measures a match time Deltat during which phase theta 1 is matched with phase theta 2 , and measures phase theta 1 (Deltat) during that time. A distortion component phase measurer measures phase theta 3 (Deltat) of the distortion component in the match time Deltat. A display then displays theta 1 (Deltat) and theta 3 (Deltat).
Inventors:
Juichi Nakata
Application Number:
JP2005506382A
Publication Date:
March 23, 2011
Filing Date:
May 19, 2004
Export Citation:
Assignee:
Advantest Corporation
International Classes:
G01R25/00; G01R23/20; G01R27/28
Domestic Patent References:
| JP2002228694A | 2002-08-14 | |||
| JP2003028904A | 2003-01-29 | |||
| JP2000314753A | 2000-11-14 | |||
| JPH07229944A | 1995-08-29 |
Foreign References:
| WO2001076097A1 | 2001-10-11 |
Attorney, Agent or Firm:
Masumi Hosoda