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Centralized channel selection in a distributed RF antenna system

  • US 5,930,682 A
  • Filed: 05/28/1997
  • Issued: 07/27/1999
  • Est. Priority Date: 04/19/1996
  • Status: Expired due to Term
First Claim
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1. A distributed wireless communications system with centralized tunable channel selection, comprising:

  • a) a central receiving means for receiving a central high-frequency signal comprising a plurality of channels {C j!}, j=1 . . . J;

    b) a central tunable channel selection means for tunably selecting a channel C k! for emission, comprisinga central mixing means in communication with said central receiving means, for generating an intermediate signal from said central high-frequency signal and a central reference signal, said intermediate signal comprising a channel C'"'"' k! corresponding to said channel C k!,a central reference means in communication with said central mixing means, for controlling a frequency of said central reference signal such that said channel C'"'"' k! is suitable for transmission through a filtering means, anda global tuning means in communication with said central reference means, for generating a global tuning signal;

    c) a plurality of remote mixing means in communication with said central mixing means over said filtering means, for generating a corresponding plurality of remote high-frequency signals, wherein a remote mixing means generates a remote high-frequency signal from said intermediate signal and a remote reference signal, said remote high-frequency signal comprising said channel C k!; and

    d) a plurality of remote emission means, wherein a remote emission means is in communication with said remote mixing means and emits said remote high-frequency signal;

    wherein said global tuning signal controls a frequency of said remote reference signal, and thereby controls a frequency of said remote high-frequency signal.

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