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Integrated frequency selectable resonant coupling network and method thereof

  • US 6,889,036 B2
  • Filed: 03/07/2002
  • Issued: 05/03/2005
  • Est. Priority Date: 03/07/2002
  • Status: Active Grant
First Claim
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1. An integrated center frequency selectable resonant coupling network comprising in combination:

  • an integrated coupling transformer having a secondary winding including a fixed capacitor parallel coupled thereto for coupling to a load and a primary winding for coupling to a source;

    a first integrated capacitive circuit controllably coupled, by an integrated switch that is actively biased on or off, across a first one of said primary winding and said secondary winding and when so coupled operable to resonate with said integrated coupling transformer at a first frequency in a first frequency band, said first integrated capacitive circuit arranged to present a balanced differential load to a differential signal provided by said source when said integrated switch is biased on or off; and

    a second integrated capacitive circuit controllably coupled across a second one of said primary winding and said secondary winding and when so coupled operable to resonate with said integrated coupling transformer at a second frequency in a second frequency band.

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