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Filter combiner

  • US 7,623,005 B2
  • Filed: 05/04/2006
  • Issued: 11/24/2009
  • Est. Priority Date: 05/11/2005
  • Status: Active Grant
First Claim
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1. A filter combiner, for mobile communications applications, adapted to be connected directly or via other components to an antenna, comprising:

  • a first directional coupler, connected to at least one first filter and at least one second filter, and adapted to be connected to an antenna branch, and to a first signal branch via at least one third filter;

    a second directional coupler, connected to the at least one first filter and the at least one second filter, and adapted to be connected to a second signal branchwherein each of the filters is one of a band pass filter type or a band reject filter type;

    wherein the at least one first filter and the at least one second filter are of the same type whereas the at least one third filter is of the other type; and

    ,wherein the at least one first, second and third filters are all tuned to a band between substantially the same frequencies.

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