Antenna array system with directional couplers for calibration

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United States of America Patent

PATENT NO 11736209
SERIAL NO

17701750

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An antenna array system includes a receiver with a plurality of receiving chains adapted to receive incoming signals from corresponding receiver antennas. A respective directional coupler is positioned in proximity to each of the plurality of receiving chains. The plurality of receiving chains is adapted to receive a respective pilot signal through the respective directional coupler, the respective pilot signal being transmitted simultaneously. A controller has a processor and tangible, non-transitory memory on which instructions are recorded for a method of calibration. One of the plurality of receiving chains is selected as a reference channel. The controller is adapted to perform calibration for the plurality of receiving chains based on the respective pilot signal, including obtaining respective chain phase values and respective gain factors. The calibration is performed without mechanical switching off or physically disconnecting the corresponding receiver antennas.

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Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLCP O BOX 300 MAIL CODE 482-C23-B21 DETROIT MI 48265-3000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bar, Shalom Ofer Kiryat Ono, IL 2 0
Givati, Ofer Hertzliya, IL 10 7
Kotzer, Igal Tel Aviv, IL 17 50

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