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Gated FMCW DF radar and signal processing for range/doppler/angle determination

  • US 5,361,072 A
  • Filed: 02/28/1992
  • Issued: 11/01/1994
  • Est. Priority Date: 02/28/1992
  • Status: Expired due to Term
First Claim
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1. A compact antenna for reception of radar signals, the antenna being part of a radar signal receiving system which includes a receiver and a transmission line, the antenna having an electrical efficiency which is a function of frequency and which causes an external source to contribute an external noise signal during detection of a desired signal, the antenna comprising:

  • two magnetic dipoles with each dipole having a phase center, the magnetic dipoles being contained in orthogonal planes and having co-linear phase centers; and

    an electric dipole having a phase center, the electric dipole being contained in a plane which is mutually orthogonal to the planes of the magnetic dipoles, the phase center of the electric dipole being co-linear with the phase centers of the magnetic dipoles, wherein the antenna has a desired electrical efficiency which results in the external noise signal being substantially equivalent to but of greater magnitude than an internal noise signal resulting from sources internal to the receiver, transmission line, and antenna.

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