Array antenna calibration apparatus and method

Details Array antenna calibration apparatus and method Array antenna calibration apparatus and method

2005-08-24

2009-06-09

Tarcza, Thomas H (Department: 3662)

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

Directive

Including a steerable array

C342S174000, C342S374000

Reexamination Certificate

active

07545321

ABSTRACT:
The apparatus comprises a calibration signal supply means, which supplies calibration signals to a plurality of antenna elements that are to be subjected to calibration; a calibration signal extracting means, which extracts the calibration signals from signals received by the antenna elements placed, one on each side of the plurality of antenna elements that are to be subjected to calibration, and a calibration control means and which individually controls the phases of signals to be transmitted from the plurality of antenna elements that are to be subjected to calibration, based on the phase differences among the calibration signals extracted by the calibration signal extracting means. This will realize accurate calibration of an array antenna, irrespective of antenna element interval deviation.

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