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Adaptive nulling hyperthermia array

  • US 5,251,645 A
  • Filed: 06/26/1991
  • Issued: 10/12/1993
  • Est. Priority Date: 06/26/1991
  • Status: Expired due to Term
First Claim
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1. A hyperthermia applicator for inducing a temperature rise in a target, comprisinga plurality of electric field radiators;

  • a source of electric field radiation coupled to each electric field radiator through a controllable transmit weighting network coupled to a respective electric field radiator, each weighting network controlling the phase and amplitude of electric field radiation coupled from the source to the respective electric field radiator in response to a respective feedback signal;

    at least one electric field probe for detecting electric field radiation from the plurality of radiators; and

    a controller means coupled to the electric field probes for receiving the detected electric field radiation and generating the respective feedback signals, and for adjusting the feedback signal in response to the detected electric field radiation so that the detected electric field radiation is minimized at the electric field probe.

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