Method of fast start and/or fast termination of a radio frequency resonator
AssigneeShimadzu Research Laboratory (Europe) Ltd.
InventorsEizo Kawato, Li Ding
Life of this patent
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Abstract
A method of fast start and/or fast termination of a radio frequency resonator, which has a coil, a capacitor and two switches with internal resistance wherein one end of the switches is connected to a junction of the coil and the capacitor where a RF voltage is provided, and another end of each switch is connected to high voltage power supplies with opposite polarities, a fast start being achieved by closing one of the switches for a short period of time for fast start, and a fast termination being obtained by closing both switches for a while.
Claims19
A method of fast start and/or fast termination of a radio frequency resonator, which has a coil, a capacitor means and two switch means each having an internal resistance, one end of each said switch means being connected to a junction of said coil and said capacitor means where a radio frequency voltage is provided, and another end of each said switch means being connected to high voltage power supplies having opposite polarities, the method comprising:
- (a) closing one of said switch means for a short period of time for fast start of said radio frequency resonator, and/or
- (b) closing both of said switch means for a time interval for fast termination of said radio frequency resonator.
An apparatus having a radio frequency resonator, comprising a coil, a capacitor means and two switch means each having an internal resistance, one end of each said switch means being connected to a junction of said coil and said capacitor means where a radio frequency voltage is provided, and another end of each said switch means is connected to high voltage power supplies having opposite polarities, and said switch means being operated by a method comprising:
- (a) closing one of said switches for a short period of time for fast start of said radio frequency resonator, and/or
- (b) closing both of said switches for a time interval for fast termination of said radio frequency resonator.
An apparatus including a radio frequency resonator, comprising capacitor means, a coil coupled to the capacitor means and first and second switch means each having an internal resistance, wherein a radio frequency voltage is applied to a junction of the coil and the capacitor means, one end of each said switch means is connected to the junction, another end of each said switch means is coupled to a source of high voltage for supplying to the first and second switch means respective high voltages of opposite polarity, one or another of said switch means being operable for fast start of said radio frequency resonator and/or both of said switch means being
Dependencies are inferred from the claim text.