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Transmitting wideband signals through an electrically small antenna using antenna modulation

  • US 10,097,217 B2
  • Filed: 11/20/2015
  • Issued: 10/09/2018
  • Est. Priority Date: 11/21/2014
  • Status: Active Grant
First Claim
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1. An electrically small device configured to radiate wideband signals, comprising:

  • a tunable high Q narrowband antenna having a plurality of ports including a feed port and a tuning port;

    a tuning element coupled to the tuning port of said antenna;

    a voltage source supplying energy to said antenna for radiating a radio frequency signal;

    a modulating signal generator for generating a high data rate signal coupled at the tuning element for modulating the tuning element;

    said tuning element comprises a plurality of capacitors coupled to the tuning port of said antenna with a plurality of switches; and

    said plurality of switches alternately couple said voltage source to the plurality of capacitors and said plurality of switches couple said plurality of capacitors to the tuning port of said antenna with a modulating signal generator controlling the plurality of switches according to a high data rate signal for modulating the tuning element while supplying energy to said antenna for radiating the radio frequency signal.

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