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Single channel transceiver with polarization diversity

  • US 5,982,329 A
  • Filed: 09/08/1998
  • Issued: 11/09/1999
  • Est. Priority Date: 09/08/1998
  • Status: Expired due to Fees
First Claim
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1. In a single channel transceiver having a pulse modulator for producing pulse trains, a signal processor for processing received scattered pulses and producing switching signals therefrom and a duplexer for maintaining separation between the transmitting and receiving functions of said transceiver;

  • an improvement for imparting polarization diversity to said transceiver such that radiant energy of differing polarization senses may be transmitted from or received by said transceiver, said improvement comprising a microstrip antenna, said antenna having a conductive strip, a conducting ground plane and a dielectric substrate sandwiched between the strip and the plane, a power connector coupling the strip with the duplexer, said antenna further having a first diode and a second diode, the first diode being located in a pre-determined position with respect to the second diode and each diode providing a conductive path between the strip and the ground plane so as to result in transmission and reception of radiant energy of pre-determined polarization senses upon selective application of voltages to the diodes; and

    a means for selecting and controlling the application of voltages to the diodes, said selecting means being coupled simultaneously between the modulator, the signal processor and said microstrip antenna.

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