Array antenna calibration apparatus and method
First Claim
1. An array antenna calibration apparatus for calibrating an array antenna having multiple antenna elements, said apparatus comprising:
- calibration signal supply means which supplies calibration signals to a plurality of antenna elements that are to be subjected to calibration;
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 calibration control means 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 said calibration signal extracting means.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
19 Claims
-
1. An array antenna calibration apparatus for calibrating an array antenna having multiple antenna elements, said apparatus comprising:
-
calibration signal supply means which supplies calibration signals to a plurality of antenna elements that are to be subjected to calibration;
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 calibration control means 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 said calibration signal extracting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An array antenna calibration apparatus for calibrating an array antenna having multiple antenna elements, said apparatus comprising:
-
calibration signal supply means which supplies calibration signals to a plurality of antenna elements placed, one on each side of a plurality of antenna elements that are to be subjected to calibration;
calibration signal detecting means which detects the calibration signals from signals received by the plurality of antenna elements that are to be subjected to calibration; and
calibration control means which individually controls the phases of the signals received by the plurality of antenna elements that are to be subjected to calibration, based on the phase differences among the calibration signals detected by said calibration signal detecting means. - View Dependent Claims (10, 11, 12, 13)
-
-
14. An array antenna calibration method for calibrating an array antenna having multiple antenna elements, said method comprising:
-
emitting calibration signals from a plurality of antenna elements that are to be subjected to calibration;
detecting the calibration signals from signals received by antenna elements that are placed, one on each side of the plurality of antenna elements that are to be subjected to calibration; and
controlling individually the phases of signals to be sent from the plurality of antenna elements based on the phase differences among the detected calibration signals. - View Dependent Claims (15, 16)
-
-
17. An array antenna calibration method for calibrating an array antenna having multiple antenna elements, said method comprising:
-
emitting calibration signals from antenna elements placed, one on each side of a plurality of antenna elements that are to be subjected to calibration;
detecting the calibration signals from signals received by the plurality of antenna elements; and
controlling individually the phases of the signals received by the plurality of antenna elements based on the phase differences among the detected calibration signals. - View Dependent Claims (18, 19)
-
Specification