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Electronically tunable RF diplexers tuned by tunable capacitors

  • US 6,683,513 B2
  • Filed: 10/24/2001
  • Issued: 01/27/2004
  • Est. Priority Date: 10/26/2000
  • Status: Expired due to Term
First Claim
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1. A diplexer comprising:

  • a first tunable bandpass filter including a first tunable capacitor and connected to a first port;

    a second tunable bandpass filter including a second tunable capacitor and connected to a second port; and

    means for coupling the first bandpass filter and the second bandpass filter to a third port, wherein the means for coupling the first bandpass filter and the second bandpass filter to a third port comprises one of;

    a circulator, a T-junction, and an orthomode transducer.

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