Electromagnetic energy delivery apparatus and method
AssigneeEmblation Limited
InventorsEamon McErlean, Gary Beale
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Abstract
An electromagnetic energy delivery apparatus comprises: an amplifier; an amplifier input configured to provide to the amplifier a signal to be amplified; bias circuitry configured to provide a bias signal to the amplifier, wherein amplifying of the input signal by the amplifier is dependent on the bias signal provided by the bias circuitry; an amplifier output configured to provide an output signal comprising an amplified version of the input signal, for providing energy delivery to a radiating element to produce electromagnetic radiation; and a controller configured to control operation of the bias circuitry to provide a time- varying bias signal thereby to provide a desired time variation of the output signal.
Claims30
An electromagnetic energy delivery apparatus comprising:
- an amplifier;
- an amplifier input configured to provide to the amplifier a signal to be amplified;
- bias circuitry configured to provide a bias signal to the amplifier, wherein amplifying of the input signal by the amplifier is dependent on the bias signal provided by the bias circuitry;
- an amplifier output configured to provide an output signal comprising an amplified version of the input signal, for providing energy delivery to a radiating element to produce electromagnetic radiation;
- and
- a controller configured to control operation of the bias circuitry to provide a time-varying bias signal thereby to provide a desired time variation of the output signal.
An electromagnetic energy delivery system comprising:
- a signal generator for generating r.f. or microwave or other signals having a desired frequency;
- an apparatus according to any preceding claim configured so that the signals from the generator are provided to the amplifier input of the apparatus;
- and
- a radiating element arranged to receive output signals from the amplifier output of the apparatus and to produce corresponding electromagnetic radiation.
A method of controlling operation of an electromagnetic energy delivery apparatus comprising controlling a bias signal applied to an amplifier of the apparatus thereby to provide a desired time variation of an output signal of the apparatus.
Dependencies are inferred from the claim text.