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Remote radio head unit system with wideband power amplifier

  • US 10,153,789 B2
  • Filed: 09/28/2017
  • Issued: 12/11/2018
  • Est. Priority Date: 12/21/2009
  • Status: Active Grant
First Claim
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1. A dual channel remote radio unit (RRU) comprising:

  • a dual band input including inputs for a first frequency band and a second frequency band;

    a duplexer coupled to the dual band input and configured to output a combined signal comprising the first frequency band and the second frequency band;

    a wideband power amplifier coupled to the duplexer and configured to amplify the combined signal;

    a diplexer coupled to the wideband power amplifier, wherein the diplexer includes a first output for the first frequency band and a second output for the second frequency band;

    a first switch and a second switch coupled to the first output and the second output of the diplexer respectively;

    a first circulator and a second circulator coupled to the first switch and the second switch respectively, wherein the first circulator and the second circulator are coupled to an antenna;

    a first receive path coupled to the first circulator, wherein the first receive path is associated with the first frequency band; and

    a second receive path coupled to the second circulator, wherein the second receive path is associated with the second frequency band.

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