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US 12,573,987 B2Granted
Apparatuses and methods involving frequency-selective power amplification
AssigneeThe Board of Trustees of the Leland Stanford Junior University
InventorsJuan Rivas-Davila, Jiale Xu, Kawin Surakitbovorn, Benjamin Wang, Mark A. Cappelli
Life of this patent
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Abstract
In certain examples, methods and semiconductor structures are directed to a switching (power) amplification circuit, including resonance circuitry to resonate at a frequency associated with at least one of a plurality of different selectable resonance frequencies. The switching amplification circuit is configured to deliver power to one or multiple loads while the switching amplifier circuit is operating based on one or more of the selectable resonance frequencies.
Claims19
An apparatus comprising:
- a switching amplifier circuit, that is frequency selective and includes resonance circuitry to resonate at a frequency associated with a plurality of different selectable resonance frequencies, to deliver power to at least one load, including a frequency-reactive load, while the switching amplifier circuit is operating based on a plurality of different switching frequencies;
- a first resonant network, as part of the resonance circuitry, to resonate at a first frequency associated with one of the plurality of different selectable resonance frequencies and with the at least one load;
- and
- a second resonant network, as part of the resonance circuitry, to resonate at a second frequency associated with another one of the plurality of different selectable resonance frequencies and with said at least one load,
- wherein the switching amplifier circuit is to drive the at least one load using at least two distinct frequencies, from among the plurality of different switching frequencies, in a frequency-controllable or frequency-alternating manner, to cause generation of plasma at said at least one load in response to the first resonant network resonating at the first frequency and the second resonant network resonating at the second frequency.
2 more elements
A method comprising:
- driving at least one load including a frequency-reactive load, via a switching amplifier circuit that is frequency selective and ZVS (zero voltage switching) and includes resonance circuitry to resonate at a frequency associated with a plurality of different selectable resonance frequencies, and delivering power to the at least one load while the switching amplifier circuit is operating based on at least one of a plurality of different switching frequencies, wherein the resonance circuitry includes a first resonant network operable to resonate at a first frequency associated with one of the plurality of different selectable resonance frequencies and a second resonant network operable to resonate at a second frequency associated with another one of the plurality of different selectable resonance frequencies;
- and
- driving, via the switching amplifier circuit, the at least one load using at least two distinct frequencies, from among the plurality of different switching frequencies, in a frequency-controllable or frequency-alternating manner, to cause generation of plasma at said at least one load in response to the first resonant network resonating at the first frequency and the second resonant network resonating at the second frequency.
An apparatus comprising:
- a switching amplifier circuit, including resonance circuitry to resonate at a frequency associated with a plurality of different selectable resonance frequencies, to deliver power to at least one load while the switching amplifier circuit is operating based on at least one of a plurality of different switching frequencies;
- and wherein the switching amplifier circuit is characterized by an output impedance Zout that is constant at a first one and at a second one of the plurality of different selectable resonance frequencies, and wherein the resonance circuitry includes components to realize the output impedance Zout.
Dependencies are inferred from the claim text.