DIGITAL ACTIVE ARRAY RADAR

摘要

In some examples, an FMCW radar array includes a housing, a transmit array comprising a plurality of transmit antenna elements configured to output an FMCW transmit beam, a receive array comprising a plurality of receive antenna elements, and a slotted choke disposed between the transmit array and the receive array. The transmit array and the receive array may be mechanically coupled to the housing. In some examples, the slotted choke comprises a plurality of slots having dimensions selected to provide cancelation of electromagnetic radiation from the frequency modulated continuous wave transmit beam to reduce a magnitude of radiation from the transmit array to which the receive array is indirectly exposed.

主权项

1. A frequency modulated continuous wave (FMCW) radar array comprising:
a housing; a transmit array comprising a plurality of transmit antenna elements configured to output an FMCW transmit beam, wherein the transmit array is mechanically coupled to the housing; a receive array comprising a plurality of receive antenna elements, wherein the receive array is mechanically coupled to the housing; and a slotted choke disposed between the transmit array and the receive array, wherein the slotted choke comprises a plurality of slots having dimensions selected to provide cancelation of electromagnetic radiation from the FMCW transmit beam to reduce a magnitude of radiation from the transmit array to which the receive array is indirectly exposed.