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Adaptive cancellation for wireless repeaters

  • US 6,745,003 B1
  • Filed: 01/14/2000
  • Issued: 06/01/2004
  • Est. Priority Date: 07/20/1999
  • Status: Expired due to Fees
First Claim
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1. A repeater system comprising:

  • a housing having a pair of substantially 180°

    oppositely facing surfaces;

    at least one donor antenna element for communicating with a base station and at least one null antenna element for communicating with a remote station, wherein said donor and null antenna elements are respectively mounted on said oppositely facing surfaces for radiating energy in opposite directions;

    a radio frequency uplink path and a radio frequency downlink path coupled between said donor antenna and said null antenna; and

    an adaptive cancellation circuit in at least one of said radio frequency uplink path and said radio frequency downlink path and mounted to said housing, which generates a cancellation signal, which when added to a radio frequency signal in either of said radio frequency uplink and radio frequency downlink paths, destructively interferes with any feedback signal present in said radio frequency signal.

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