Patent ID: 8945342
Filing Date: 2015-02-03
Classification: C23C,H01J

Abstract:
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; wherein a 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.