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Method and apparatus for producing delay of a carrier signal for implementing spatial diversity in a communications system

  • US 5,953,659 A
  • Filed: 05/05/1997
  • Issued: 09/14/1999
  • Est. Priority Date: 05/05/1997
  • Status: Expired due to Fees
First Claim
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1. A method of implementing spatial diversity in a communication system, comprising:

  • receiving at a first port a first signal originated from a transmitter in said communication system;

    outputting a delayed version of said first signal from a second port coupled to a first antenna in said communication system;

    directing, from said first port to a first end of a first transmission line, said first signal to travel down said transmission line;

    reflecting, from a second end of said first transmission line coupled to a receiver in said communication system, said first signal to create delay, proportional to twice an electrical length of said first transmission line, in said first signal for producing said delayed version of said first signal;

    directing said delayed version of said first signal to output from said second port;

    transmitting said delayed version of said first signal and said first signal from said first antenna and a second antenna coupled to said transmitter, respectively, for implementing spatial downlink diversity.

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