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Systems and methods for reconfigurable filtenna

  • US 9,653,793 B2
  • Filed: 03/15/2013
  • Issued: 05/16/2017
  • Est. Priority Date: 03/16/2012
  • Status: Active Grant
First Claim
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1. A reconfigurable filtering antenna (filtenna) structure, comprising:

  • a reconfigurable band-limited filter, the reconfigurable band-limited filter comprising;

    a first port to receive a radio frequency (RF) signal and a biasing DC signal,a microstrip feeding line configured to receive the RF signal and the biasing signal, the microstrip feeding line comprising a first edge section, a middle section, and a second edge section, wherein the first edge section and the middle section is separated by a first cap and the middle section and the second edge section is separated by a second gap, wherein the first gap and the second gap contribute to a fixed capacitance of the microstrip feeding line, wherein the first edge section and the middle section is electrically connected, anda varactor, incorporated within a slot in the middle section; and

    an antenna element, operatively integrated with the reconfigurable band-limited filter, wherein the reconfigurable band-limited filter performs in a band-limited operation based on the biasing DC signal applied to the varactor, wherein the biasing DC signal changes a total capacitance of the filtenna structure.

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