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US Patent 7748344 Segmented resonant antenna for radio frequency inductively coupled plasmas

Patent 7748344 was granted and assigned to Axcelis Technologies on July, 2010 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee
Axcelis Technologies
Axcelis Technologies
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7748344
Date of Patent
July 6, 2010
Patent Application Number
10702368
Date Filed
November 6, 2003
Patent Citations Received
‌
US Patent 11951316 Antenna configuration
0
Patent Primary Examiner
‌
Rudy Zerigon
Patent abstract

An ion shower system is disclosed and comprises a plasma source operable to generate source gas ions within a chamber. The plasma source further comprises a plurality of conductor segments and a plurality of capacitors, wherein the conductor segments are serially connected through the plurality of capacitors. The plasma source further comprises an antenna drive circuit coupled to the plurality of conductor segments that provides power to the conductor segments and capacitors at a predetermined frequency. The ion shower system also comprises a source gas inlet that provides a source gas to the chamber. The conductor segments, capacitors and antenna drive circuit cooperatively provide energy to charged particles in the chamber, thereby energizing the charged particles and generating a plasma comprising source gas ions and electrons within the chamber due to ionizing collisions between the energized charged particles and the source gas.

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