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Multiple antenna multiplexers, demultiplexers and antenna assemblies

  • US 8,045,592 B2
  • Filed: 03/04/2009
  • Issued: 10/25/2011
  • Est. Priority Date: 03/04/2009
  • Status: Active Grant
First Claim
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1. An antenna multiplexer comprising:

  • a first input configured to receive a communication signal from and transmit a communication signal to a world cell antenna operable for use with AMPS/GSM850, GSM900, GSM1800, PCS/GSM1900, and UMTS/AWS communication signals;

    a second input configured to receive a satellite signal from a satellite antenna;

    a first notch filter coupled to the first input and configured to limit the satellite signal from passing to the world cell antenna;

    a second notch filter coupled to the second input and configured to limit the received and transmitted communication signals from passing to the satellite antenna;

    an output configured to output a combined signal including the communication signals and the satellite signal;

    a first matching circuit configured to adjust an output impedance of the multiplexer;

    a second matching circuit coupled between the second input and the second notch filter and configured to match an impedance of the satellite antenna to a filter impedance of the second notch filter; and

    a third matching circuit coupled between the first notch filter and the second notch filter and configured to match a second notch filter output to a first filter output;

    wherein the antenna multiplexer is operable via DC phantom power provided to the antenna multiplexer through the output.

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