Phase calibration method and apparatus

Details Phase calibration method and apparatus Phase calibration method and apparatus

2006-09-12

2006-09-12

Gregory, Bernarr E. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Testing or calibrating of radar system

By monitoring

C342S165000, C342S173000, C342S175000, C342S195000, C342S368000, C702S085000, C702S106000, C702S107000

Reexamination Certificate

active

07106249

ABSTRACT:
Disclosed is a phase calibration method for inserting a calibration signal (SC) into main signals (SM1to SMn) of a plurality of branches in turn, estimating the phase characteristic of an analog circuit to which a respective one of the main signals is input and calibrating the phase of each main signal. The method includes steps of outputting a first combined signal obtained by combining output signals from the analog circuits (62ato62n) in all branches, outputting a second combined signal obtained by combining the main signals in all branches, extracting the calibration signal by removing the second combined signal from the first combined signal in a calibration signal extracting unit (64), estimating the phase characteristics of the analog circuits, to which the main signals having the inserted calibration signal are input, based upon a change in phase of the calibration signal, and subjecting the main signals to phase adjustment having characteristics that are opposite the phase characteristics.

REFERENCES:
patent: 6157343 (2000-12-01), Andersson et al.
patent: 6339399 (2002-01-01), Andersson et al.
patent: 6747595 (2004-06-01), Hirabe
patent: 6762717 (2004-07-01), Hirabe
patent: 6806844 (2004-10-01), Azuma
patent: 2003/0058166 (2003-03-01), Hirabe
patent: 2003/0142012 (2003-07-01), Hirabe
patent: 2003/0236107 (2003-12-01), Azuma
patent: 2004/0070533 (2004-04-01), Azuma
patent: 0 812 027 (1997-12-01), None
patent: 1 014 485 (2000-06-01), None
patent: 1 093 186 (2001-04-01), None
patent: 1178562 (2002-02-01), None
patent: 1 227 542 (2002-07-01), None
patent: 1329983 (2003-07-01), None
patent: 1389837 (2004-02-01), None
patent: 1515455 (2005-03-01), None
patent: 2002-261668 (2002-09-01), None
patent: 2003-143047 (2003-05-01), None
European Search Report Dated Jan. 2, 2006.

Affiliated with

Also associated with

Rating

Phase calibration method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase calibration method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase calibration method and apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3593758