Patent ID: 11860297
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A radar system, comprising:
a plurality of substantially identical transceiver sets, each transceiver set comprising at least one respective transmit chip and at least one respective receive chip;
each transmit chip comprising a respective transmit front end, respective connecting traces, and a respective transmit sub-array of N substantially uniformly spaced transmit antennas where N is an integer;
each receive chip comprising a respective receive front end, respective connecting traces, and a respective receive sub-array of M substantially uniformly spaced receive antennas where M is an integer;
the substantially uniformly spaced receive antennas of each respective receive sub-array being spaced a distance D2 and the substantially uniformly spaced transmit antennas of each respective transmit sub-array being spaced a distance D1=M*D2; and
each transceiver set being spaced from adjacent transceiver sets by a substantially identical distance D4<N*D1;
wherein each transceiver set establishes a respective virtual antenna array; and
wherein the respective virtual antenna arrays established by adjacent transceiver sets at least partially overlap in an overlap region, such that the overlap region comprises alternating virtual antennas from each respective virtual antenna array separated by a distance D2/2.