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AssigneeAlfred E. Mann Foundation for Scientific Research
InventorsJoseph H. Schulman, Gregoire Cosendai, Maria-Isabel Arcos-Burgos, John Gord
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An automatic tuning system for a magnetic field generating tuned circuit includes a processor configured to maintain the resonant frequency of a tuned circuit equal to a reference frequency. The tuned circuit is driven by a power amplifier whose output provides an amplified signal at the reference frequency. The tuned circuit includes a magnetic field generating inductor and a bank of individually switchable capacitors controlled by the processor capable of adding and removing the respective capacitances to and from the tuned circuit. The inductor includes a Faraday shield to shield the tuned circuit from the influence of electric fields. A power sense circuit monitors the power delivered by the power amplifier to the tuned circuit and the processor sequentially switches the capacitors in a binary progression format to achieve maximum power delivery indicative of conforming the resonant frequency of the tuned circuit to the reference frequency. In an alternate embodiment of the invention, the inductor includes a plurality of taps that provide individually selectable inductance values available for use in the process of conforming the resonant frequency of the tuned circuit to the reference frequency. In further alternate embodiments, the variable capacitor is in the form of a motor driven variable capacitor and the tuning sequence relies on a phase locked loop using the phase of a reference frequency signal and the phase of the inductor current as control parameters.
An automatic tuning system for a magnetic field generator comprising:
In an automatic tuning system for a magnetic field generator comprising, a tuned circuit comprising a magnetic field generating inductor (L) and an adjustable capacitor (C), the values of the L and C establishing a tuned circuit resonant frequency, a power amplifier having an output coupled to and adapted to drive the tuned circuit, the power amplifier providing, at said output, an amplified signal at a preselected reference frequency, the method of tuning the tuned circuit comprising the steps of:
An automatic tuning system for a magnetic field generator comprising:
An automatic tuning system for a magnetic field generator comprising:
In an automatic tuning system for a magnetic field generator comprising, a tuned circuit comprising a magnetic field generating inductor (L) and an adjustable capacitor (C), the values of the L and C establishing the tuned circuit resonant frequency, a power amplifier having an output coupled to and adapted to drive the tuned circuit, the power amplifier providing, at said output, a tuned circuit drive signal at a preselected reference frequency, a method of tuning the tuned circuit comprising the steps of:
An automatic tuning system for a magnetic field generator comprising:
Dependencies are inferred from the claim text.