Antenna system calibration
AssigneeBAE SYSTEMS plc
InventorsMARCUS EDWARD CLARK, MICHAEL ANDREW SCOTT, JAMES EADE
Life of this patent
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Abstract
A method for calibrating an antenna system (1) including a antenna elements (3) connected to signal receiver units (4) at an RF signal input port thereof comprising, generating an RF calibration signal (62), applying the RF calibration signal to the RF signal input port of the signal receiver units without applying the calibration signal via the antenna elements (3). The response of the antenna system to the calibration signal is measured, and a signal correction is calculated according to the measured response. The signal correction is applied to the response of the antenna system to signals subsequently received at the signal receiver units via the antenna elements of the antenna system.
Claims20
A method for calibrating an antenna system including an antenna element(s) connected to a signal receiver unit(s) at an RF signal input port thereof, the method comprising:
- generating an RF calibration signal;
- applying the RF calibration signal to the RF signal input port of the signal receiver unit(s) without applying the calibration signal via the antenna element(s);
- measuring the response of the antenna system to the calibration signal;
- calculating a signal correction according to the measured response;
- and
- applying the signal correction to the response of the antenna system to signals subsequently received at said signal receiver unit(s) via the antenna element(s) of the antenna system.
An antenna system including:
- an antenna element(s) connected to a signal receiver unit(s) at an RF signal input port thereof comprising:
- a calibration RF signal transmitter arranged to generate an RF calibration signal, and to apply the RF calibration signal to the RF signal input port of the signal receiver unit(s) without applying the calibration signal via the antenna element(s);
- and
- a calibration controller arranged to measure the response of the antenna system to the calibration signal, to calculate a signal correction according to the measured response, and to apply the signal correction to the response of the antenna system to signals subsequently received at said signal receiver unit(s) via the antenna element(s) of the antenna system.
A non-transitory computer program product encoded with instructions that when executed by a computer system causes the computer system to operate to control an optical signal transmission apparatus in accordance with a process, the process comprising:
- generating an RF calibration signal;
- applying the RF calibration signal to the RF signal input port of the signal receiver unit(s) without applying the calibration signal via the antenna element(s);
- measuring the response of the antenna system to the calibration signal;
- calculating a signal correction according to the measured response;
- and
- applying the signal correction to the response of the antenna system to signals subsequently received at said signal receiver unit(s) via the antenna element(s) of the antenna system.
Dependencies are inferred from the claim text.