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Adaptive impedance matching apparatus, system and method with improved dynamic range

  • US 9,419,581 B2
  • Filed: 01/31/2014
  • Issued: 08/16/2016
  • Est. Priority Date: 11/08/2006
  • Status: Active Grant
First Claim
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1. A mobile communication device, comprising:

  • an antenna;

    a matching network coupled with the antenna, wherein the matching network comprises one or more variable reactive elements, and wherein the one or more variable reactive elements comprise a semiconductor varactor, a micro-electro-mechanical systems (MEMS) varactor, a MEMS switched reactive element, a semiconductor switched reactive element, a ferroelectric capacitor or a combination thereof;

    a memory to store computer instructions; and

    a controller coupled with the memory and the matching network, wherein the controller, responsive to executing the computer instructions, performs operations comprising;

    obtaining a voltage at an output of the matching network, wherein the voltage is obtained using a voltage detector;

    identifying allowable phase shifts within a transmit burst; and

    adapting the matching network according to the allowable phase shifts and the obtained voltage to increase an RF voltage at the output by varying the one or more variable reactive elements.

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