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Adjustable multiband antenna and methods

  • US 8,564,485 B2
  • Filed: 07/13/2006
  • Issued: 10/22/2013
  • Est. Priority Date: 07/25/2005
  • Status: Active Grant
First Claim
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1. An adjustable antenna having at least a lower and an upper operating band and comprising:

  • a ground plane;

    a radiating plane; and

    an adjusting circuit configured to displace at least one of said lower and upper operating bands, said adjusting circuit comprising;

    an LC circuit with an input coupled to the radiating plane;

    a switch with its fixed end coupled to an output of the LC circuit; and

    at least two tuning lines, the first of which is coupled to a first output pole of the switch and the second of said tuning lines coupled to a second output pole of the switch.

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