发明名称 |
SYSTEMS AND METHODS FOR FILTERING RADIO FREQUENCIES FROM A SIGNAL OF A THERMOCOUPLE AND CONTROLLING A TEMPERATURE OF AN ELECTRODE IN A PLASMA CHAMBER |
摘要 |
A circuit including a first filter assembly and a controller. The first filter assembly is implemented on a printed circuit board. The first filter assembly includes a first filter and a second filter. The first filter receives a first signal from a first sensor, prevents passage of a first portion of the first signal and outputs a second signal. The first portion of the first signal is at a first radio frequency. A second portion of the first signal is indicative of a first temperature of a first electrode in a plasma chamber. The second filter receives the second signal and prevents passage of a portion of the second signal. The portion of the second signal is at a second radio frequency. The second radio frequency is less than the first radio frequency. The controller adjusts a temperature of the first electrode based on an output of the second filter. |
申请公布号 |
US2017125200(A1) |
申请公布日期 |
2017.05.04 |
申请号 |
US201514965030 |
申请日期 |
2015.12.10 |
申请人 |
Lam Research Corporation |
发明人 |
Burkhart Vince;Ramsayer Christopher;Thilagaraj Mohan |
分类号 |
H01J37/04;H05H1/48;H01J37/244;H05B1/02 |
主分类号 |
H01J37/04 |
代理机构 |
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代理人 |
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主权项 |
1. A circuit comprising:
a first filter assembly implemented on a printed circuit board, the first filter assembly comprising
a first filter configured to (i) receive a first signal from a first sensor, (ii) prevent passage of a first portion of the first signal, and (iii) output a second signal, wherein the first portion of the first signal is at a first radio frequency, and wherein a second portion of the first signal is indicative of a first temperature of a first electrode in a plasma chamber, anda second filter configured to (i) receive the second signal, and (ii) prevent passage of a portion of the second signal, wherein the portion of the second signal is at a second radio frequency, and wherein the second radio frequency is less than the first radio frequency; and a controller configured to adjust a temperature of the first electrode based on an output of the second filter. |
地址 |
Fremont CA US |