| 摘要 |
<p>An array antenna calibration apparatus comprises a calibration signal supply section (16, 13, 14), which supplies calibration signals to a plurality of first antenna elements (E0, E1, E2, E3) that are to be subjected to calibration; a calibration signal extracting section (17, 18, 19), which extracts the calibration signals from signals received by second antenna elements (DA, DB) positioned on either side of the plurality of first antenna elements (E0, E1, E2, E3) that are to be subjected to calibration; and a calibration control section (15, 20) which individually controls the phases of signals to be transmitted from the plurality of first antenna elements (E0, E1, E2, E3) that are to be subjected to calibration, based on the phase differences among the calibration signals extracted by the calibration signal extracting section (17, 18, 19). This will realize accurate calibration of an array antenna, irrespective of antenna element interval deviation.</p> |
