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Time division duplex communications repeater

  • US 5,726,980 A
  • Filed: 03/22/1996
  • Issued: 03/10/1998
  • Est. Priority Date: 03/30/1995
  • Status: Expired due to Fees
First Claim
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1. A method of amplifying signals passing along a transmission line at a carrier frequency comprising the steps of:

  • tapping the signals from the line;

    converting the tapped signals to a different carrier frequency;

    amplifying the converted signals;

    coupling the amplified signals to the line for onward transmission at said different carrier frequency;

    wherein the signals are time division duplex signals which flow upstream and downstream along the line in alternate time periods, and wherein in the alternate periods the tapped signals are converted from a first to a second carrier frequency and from the second to the first carrier frequency.

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