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Apparatus method and computer program for configurable radio-frequency front end filtering

  • US 20090286501A1
  • Filed: 05/19/2008
  • Published: 11/19/2009
  • Est. Priority Date: 05/19/2008
  • Status: Active Grant
First Claim
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1. A circuit comprising:

  • a diplexer having a first port interfacing a first node of the circuit to a common port of the diplexer through at least one frequency adjustable first filter disposed along a first radio branch, and a second port interfacing a second node of the circuit to the common port through at least one frequency adjustable second filter disposed along a second radio branch;

    wherein at least one of the first and second filters has a control signal input configured to change at least one of a filtering frequency and filtering attenuations according to control signal input thereto.

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