Patent ID: 8187416
Filing Date: 2012-05-29
Classification: B08B,H01J

Abstract:
1. An interior antenna for coupling RF energy to a plasma in a process chamber having a wall, the antenna comprising: (a) a coil having a face exposed to the plasma in the chamber, the coil comprising a substantially circular section and first and second radially inwardly bent sections that abut one another and have a gap therebetween; (b) a plurality of standoffs to support the coil at a spacing from the wall of the process chamber, at least one standoff located on the first and second radially inwardly bent sections of the coil, the at least one standoff comprising a terminal extending out of the coil and through which electrical power is applied to the coil from an external power source, the terminal comprising (i) a conductor receptacle to receive a power connector through which electrical power is applied to the coil, the conductor receptacle having a first length L (c) a dielectric isolator; and (d) a conductor cup about each standoff having the terminal, the conductor cup having extensions that rest on the dielectric isolator.