Surface wave plasma generating antenna and surface wave plasma processing apparatus
First Claim
1. A surface wave plasma generating antenna for generating a surface wave plasma in a chamber by radiating into the chamber a microwave transmitted from a microwave output section through a coaxial waveguide including an outer conductor and an inner conductor, the surface wave plasma generating antenna comprising:
- a planar shape member having a plurality of curved slots arranged along a circumferential direction and encircling a center of the planar shape member;
whereina joint portion of the planar shape member is formed by a radial separation between two circumferentially adjacent slots of the plurality of curved slots, whereinend portions of the two circumferentially adjacent slots are overlapped with each other in a diametrical direction at each joint portion such that, along an entirety of the circumferentially direction of the plurality of curved slots encircling the center of the planar shape member, a curved slot exists.
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Accused Products
Abstract
A surface wave plasma generating antenna serves to generate a surface wave plasma in a chamber by radiating into the chamber a microwave transmitted from a microwave output section through a coaxial waveguide including an outer conductor and an inner conductor. The surface wave plasma generating antenna is formed in a planar shape and has a plurality of slots arranged in a circumferential direction, and each joint portion between two adjacent slots in the circumferential direction is overlapped with at least one of the slots in a diametrical direction.
11 Citations
14 Claims
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1. A surface wave plasma generating antenna for generating a surface wave plasma in a chamber by radiating into the chamber a microwave transmitted from a microwave output section through a coaxial waveguide including an outer conductor and an inner conductor, the surface wave plasma generating antenna comprising:
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a planar shape member having a plurality of curved slots arranged along a circumferential direction and encircling a center of the planar shape member;
whereina joint portion of the planar shape member is formed by a radial separation between two circumferentially adjacent slots of the plurality of curved slots, wherein end portions of the two circumferentially adjacent slots are overlapped with each other in a diametrical direction at each joint portion such that, along an entirety of the circumferentially direction of the plurality of curved slots encircling the center of the planar shape member, a curved slot exists. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification