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作者:

WANG;Bo (WANG;Bo.) (学者:王波) | XU;Lichun (XU;Lichun.) | ZHANG;Ming (ZHANG;Ming.) | WANG;Ruzhi (WANG;Ruzhi.) (学者:王如志) | SONG;Xuemei (SONG;Xuemei.) | HOU;Yudong (HOU;Yudong.) (学者:侯育冬) | ZHU;Mankang (ZHU;Mankang.) | LIU;Jingbing (LIU;Jingbing.) | WANG;Hao (WANG;Hao.) | YAN;Hui (YAN;Hui.)

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incoPat

摘要:

A method for improving uniformity of high-frequency discharge plasma in a frequency modulation manner. In a plasma discharge chamber (1),  for a pair of parallel electrodes (2),  a high-frequency power supply (3) is adopted to feed power to the electrodes,  the frequency range of the electromagnetic field being between 13.56 MHz and 160 MHz. A discharge gas is filled to form plasma. The frequency fed to the high-frequency electromagnetic field is controlled through automatic tuning. During the plasma discharge,  the frequency thereof keeps changing cyclically,  the change range of the frequency is a part contained inside 13.56 MHz to 160MHz,  or is the entire range between 13.56 MHz and 160 MHz,  so that cyclic change occurs at a position with high plasma density on a plane parallel to the electrodes in a plasma discharge space. In the time period of more than one frequency change cycle,  the average plasma density between the parallel electrodes is uniform.

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专利基本信息 :

专利类型: 发明申请

申请(专利)号: WOCN12076756

申请日期: 2012-06-12

公开(公告)日: 2013-10-31

公开(公告)号: WO2013159433A1

申请(专利权): BEIJING;UNIVERSITY;OF;TECHNOLOGY;;WANG;Bo;;XU;Lichun;;ZHANG;Ming;;WANG;Ruzhi;;SONG;Xuemei;;HOU;Yudong;;ZHU;Mankang;;LIU;Jingbing;;WANG;Hao;;YAN;Hui

法律状态: 进入国家阶段-PCT有效期满

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