Common-direction duplexer

  • US 8,755,399 B1
  • Filed: 03/15/2013
  • Issued: 06/17/2014
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
Patent Images

1. A common-direction duplexer comprising:

  • a common port;

    a first-band port;

    a second-band port;

    a first filter communicatively coupled between the common port and the first-band port, the first filter configured to pass a first frequency range and filter out a second frequency range and a third frequency range,the first frequency range including a first uplink band associated with Band 12 of a 700 Megahertz (MHz) Third Generation Partnership Project (3GPP) standard,the second frequency range including a second uplink band associated with Band 13 of the 700 MHz 3GPP standard, andthe third frequency range being spectrally between the first frequency range and the second frequency range and including a first downlink band and a second downlink band, the first downlink band being associated with Band 12 of the 700 MHz 3GPP standard and the second downlink band being associated with Band 13 of the 700 MHz 3GPP standard; and

    a second filter communicatively coupled between the common port and the second-band port, the second filter configured to pass the second frequency range and filter out the first frequency range and the third frequency range.

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