Apparatus for exciting a plasma in a semiconductor wafer processing system using a complex RF waveform
First Claim
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1. Apparatus for exciting a plasma within a semiconductor wafer processing system, comprising:
- a complex waveform generator for generating a complex waveform;
a power amplifier, coupled to said complex waveform generator, for amplifying said complex waveform; and
a matching network, coupled to the power amplifier, for matching the impedance of the power amplifier to the impedance of plasma excitation circuitry within said semiconductor wafer processing system.
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Abstract
A method and apparatus for generating a complex waveform and coupling the waveform to a reaction chamber of a semiconductor wafer processing system using a power amplifier. Specifically, the apparatus includes a complex waveform generator coupled to a high-power amplifier. The high-power amplifier is coupled to one or more frequency selective matching networks which select bands of RF signal to be coupled to plasma excitation circuit within the semiconductor wafer processing system.
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Citations
29 Claims
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1. Apparatus for exciting a plasma within a semiconductor wafer processing system, comprising:
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a complex waveform generator for generating a complex waveform; a power amplifier, coupled to said complex waveform generator, for amplifying said complex waveform; and a matching network, coupled to the power amplifier, for matching the impedance of the power amplifier to the impedance of plasma excitation circuitry within said semiconductor wafer processing system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Apparatus for exciting a plasma within a semiconductor wafer processing system, comprising:
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a complex waveform generator for generating a complex waveform; a broadband power amplifier, coupled to said complex waveform generator, for amplifying said complex waveform; a control device, coupled to the broadband power amplifier and said complex waveform generator, for dynamically controlling the complex waveform in response to measured indicia of complex waveform content; and a broadband matching network, coupled to the broadband amplifier, for matching the impedance of the broadband amplifier to the impedance of plasma excitation circuitry within said semiconductor wafer processing system. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of exciting a plasma within a semiconductor wafer processing system, comprising:
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generating a complex waveform; amplifying said complex waveform; and coupling the amplified complex waveform to plasma excitation circuitry within said semiconductor wafer processing system. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification