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Single-antenna FM/CW marine radar

  • US 8,330,651 B2
  • Filed: 03/31/2010
  • Issued: 12/11/2012
  • Est. Priority Date: 11/23/2009
  • Status: Active Grant
First Claim
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1. A radar system comprising:

  • a single slotted waveguide antenna;

    a circulator in signal communication with the antenna, wherein the circulator comprises only three ports;

    a transceiver in signal communication with the antenna, the transceiver comprising;

    a receiver mixer connected directly to an output of the circulator;

    a component configured to provide a local oscillator signal using a sample of a transmitter signal; and

    a component configured to match arrival time of the local oscillator signal with a signal associated with at least one of leakage or reflected power signals, thereby performing phase noise cancellation in the receiver mixer.

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