Single anchor ultra-wideband antenna array
AssigneeQorvo US, Inc.
InventorsAbdallah Dhouibi, Julien Schrive, Matthias John
Life of this patent
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Abstract
A vehicle includes an ultrawideband (UWB) anchor disposed within the vehicle. The anchor includes three antenna elements. A method for localizing a peer UWB device relative to the vehicle includes, with the three antenna elements, receiving a UWB signal from the peer UWB device. The method also includes computing a phase difference of arrival (PDoA) value of the UWB signal for each pair of the three antenna elements, yielding three PDoA values. The method also includes translating at least two of the PDoA values into an angle of arrival (AoA) value, and, based on the AoA value and a distance from the anchor to the peer UWB device, determining a position of the peer UWB device relative to the anchor.
Claims20
A method for localizing a peer ultrawideband (UWB) device relative to a vehicle, the vehicle comprising an anchor disposed within the vehicle, the anchor comprising three antenna elements, the method comprising:
- with the three antenna elements, receiving a UWB signal from the peer UWB device;
- computing a phase difference of arrival (PDoA) value of the UWB signal for each pair of the three antenna elements, yielding three PDoA values;
- translating at least two of the PDoA values of the three PDoA values into an angle of arrival (AoA) value;
- and
- based on the AoA value and a distance from the anchor to the peer UWB device, determining a position of the peer UWB device relative to the anchor.
An ultrawideband (UWB) system for localizing a peer UWB device relative to a vehicle, the UWB system comprising:
- an anchor disposed within the vehicle, the anchor comprising three antenna elements configured to receive a UWB signal from the peer UWB device;
- and
- a processor configured to:
- compute a phase difference of arrival (PDoA) value of the UWB signal for each pair of the three antenna elements, yielding three PDoA values;
- translate at least two of the PDoA values of the three PDoA values into an angle of arrival (AoA) value;
- and
- based on the AoA value and a distance from the anchor to the peer UWB device, determine a position of the peer UWB device relative to the anchor.
A vehicle, comprising:
- an ultrawideband (UWB) system for localizing a peer UWB device relative to the vehicle, the UWB system comprising:
- an anchor disposed within the vehicle, the anchor comprising three antenna elements configured to receive a UWB signal from the peer UWB device;
- and
- a processor configured to:
- compute a phase difference of arrival (PDoA) value of the UWB signal for each pair of the three antenna elements, yielding three PDoA values;
- translate at least two of the PDoA values of the three PDoA values into an angle of arrival (AoA) value;
- and
- based on the AoA value and a distance from the anchor to the peer UWB device, determine a position of the peer UWB device relative to the anchor.
Dependencies are inferred from the claim text.