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Method for receiving a signal on a single multi-band antenna

  • US 7,542,727 B2
  • Filed: 03/04/2005
  • Issued: 06/02/2009
  • Est. Priority Date: 07/03/2001
  • Status: Expired due to Fees
First Claim
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1. A method of wireless communication in a wireless communication device, the method comprising the steps of:

  • receiving a plurality of signals signal on a dual band antenna, wherein the signals include a first communication signal, a second communication signal and a global positioning system (GPS) signal centered at approximately 1575 MHz;

    coupling the signals to a diplexer;

    filtering the signal into one of a first band signal and a second band signal using the diplexer, wherein the second band signal includes the GPS signal;

    coupling the filtered first band signal to a first band duplexer;

    coupling the filtered second band signal to a GPS switching module that is configured to selectively couple the signals signal from the dual band antenna to one of a GPS module and a second band duplexer;

    if the filtered second band signal is a GPS band signal centered at approximately 1575 MHz, then switching the GPS band signal to the GPS module that includes an impedance matching circuit;

    impedance matching the received GPS signal with the impedance matching circuit tuned for the GPS band;

    amplifying the GPS signal with a GPS low noise amplifier (LNA); and

    if the filtered second band signal is not the GPS band signal, then switching the filtered second band signal to the second band duplexer.

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