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Radar apparatus provided with series-feed array-antennas each including a plurality of antenna elements
Radar apparatus provided with series-feed array-antennas each including a plurality of antenna elements
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机译:设有串联馈电阵列天线的雷达设备,每个串联馈电阵列天线包括多个天线元件
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摘要
A radar apparatus forming a series-feed array-antenna includes an array antenna having transmission/reception antennas, and each antenna includes a plurality of antenna elements arrayed with feed-lines to be series-connected each other. A calibration line is disposed between the transmission antenna and the reception antenna via a switch which connects or disconnects the calibration line. The signal having a phase shift is transmitted via the calibration line when the switch connects the calibration line and an amount of phase shift from the signal transmitted via the calibration line is calculated based on a reference phase at the transmission antenna thereby calibrating the phase shift.
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