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Impedance controlled by the phase angle between two signals

  • US 6,114,930 A
  • Filed: 05/26/1998
  • Issued: 09/05/2000
  • Est. Priority Date: 11/27/1995
  • Status: Expired due to Term
First Claim
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1. A method for controlling impedance of a device, the device comprising a first conductor and a second conductor, the first and second conductors being positioned in relation to each other so as to provide electromagnetic coupling between them, the first conductor exhibiting a device resistance and a device reactance, the method comprising the steps of:

  • receiving, in the first conductor, a first electric signal having a first amplitude and a first phase angle;

    generating a second electric signal having a second amplitude and a second phase angle;

    delivering the second electric signal to the second conductor; and

    controlling said second phase angle in relation to said first phase angle such that said device resistance is changed.

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