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

Claim 12:
13. A radar system, comprising:
a first transceiver set comprising a respective transmit chip and a respective receive chip;
a second transceiver set comprising a respective transmit chip and a respective receive chip;
the respective transmit chip and the respective receive chip of each of the first transceiver set and the second transceiver set having a substantially identical spatial layout;
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, wherein each respective transmit sub-array has a substantially identical spatial layout of the N substantially uniformly spaced transmit antennas; and
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, wherein each respective receive sub-array has a substantially identical spatial layout of the M substantially uniformly spaced receive antennas;
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;
each transceiver set being spaced from adjacent transceiver sets by a substantially identical distance D4<N*D1;
wherein the first transceiver set establishes a first virtual antenna array and the second transceiver set establishes a second 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.