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    • 16. 发明授权
    • Plasma processor apparatus and method, and antenna
    • 等离子体处理装置和方法以及天线
    • US06876155B2
    • 2005-04-05
    • US10334063
    • 2002-12-31
    • Arthur M. HowaldAndras Kuthi
    • Arthur M. HowaldAndras Kuthi
    • H01J37/32H01J7/24
    • H01J37/321H01J37/32183
    • An antenna includes excitation terminals responsive to an RF source to supply an RF electromagnetic field to a plasma that processes a workpiece in a vacuum chamber. A matching network includes first and second portions respectively between the source and terminals and between the terminals and the antenna plasma excitation coil. In response to indications of impedance matching between the source and its load, currents flowing between (1) the first portion and the terminals and (2) the terminals and the coil are controlled so the latter exceeds the former. The indications control impedances of the first and second portions or the first portion impedance and the source frequency. The coil can include a transformer having a primary winding coupled to the excitation terminals and a multi-turn plasma excitation secondary winding.
    • 天线包括响应于RF源的激励端子,以将RF电磁场提供给处理真空室中的工件的等离子体。 匹配网络包括分别在源极和端子之间以及在端子和天线等离子体激励线圈之间的第一和第二部分。 响应于源极和负载之间的阻抗匹配的指示,在(1)第一部分和端子之间流动的电流和(2)端子和线圈被控制,使得后者超过前者。 第一和第二部分或第一部分阻抗和源频率的指示控制阻抗。 线圈可以包括具有耦合到激励端子的初级绕组和多匝等离子体激发次级绕组的变压器。
    • 17. 发明授权
    • Plasma excitation coil
    • US06646385B2
    • 2003-11-11
    • US10227275
    • 2002-08-26
    • Arthur M. HowaldBrian McMillinFrank Yun Lin
    • Arthur M. HowaldBrian McMillinFrank Yun Lin
    • H01J724
    • H01J37/321
    • A spiral-like multi-turn coil excites a plasma for treating a workpiece in a vacuum plasma processor. In one embodiment two of the turns have a discontinuity. Each discontinuity has a capacitor connected across it. An RF source drives the coil via a matching network, an inductor connected to one coil excitation terminal and a capacitor connected to another coil excitation terminal. The impedances of the inductors and the capacitors at the RF source frequency and the discontinuity locations are such as to cause a standing wave voltage of the coil to have (1) equal and opposite values at the coil terminals, (2) sudden amplitude and slope changes, slope reversals and polarity reversals at each of the discontinuities, and (3) three gradual standing wave voltage polarity reversals, spaced from each other by 120°. Two of the gradual polarity reversals are azimuthally aligned with the discontinuities. In a second embodiment, one turn has a discontinuity having a series capacitor connected across it. A shunt capacitor is connected between the discontinuity and ground.
    • 18. 发明授权
    • Plasma excitation coil
    • 等离子体励磁线圈
    • US06441555B1
    • 2002-08-27
    • US09539906
    • 2000-03-31
    • Arthur M. HowaldBrian McMillinFrank Yun Lin
    • Arthur M. HowaldBrian McMillinFrank Yun Lin
    • H01J724
    • H01J37/321
    • A spiral-like multi-turn coil excites a plasma for treating a workpiece in a vacuum plasma processor. In one embodiment two of the turns have a discontinuity. Each discontinuity has a capacitor connected across it. An RF source drives the coil via a matching network, an inductor connected to one coil excitation terminal and a capacitor connected to another coil excitation terminal. The impedances of the inductors and the capacitors at the RF source frequency and the discontinuity locations are such as to cause a standing wave voltage of the coil to have (1) equal and opposite values at the coil terminals, (2) sudden amplitude and slope changes, slope reversals and polarity reversals at each of the discontinuities, and (3) three gradual standing wave voltage polarity reversals, spaced from each other by 120°. Two of the gradual polarity reversals are azimuthally aligned with the discontinuities. In a second embodiment, one turn has a discontinuity having a series capacitor connected across it. A shunt capacitor is connected between the discontinuity and ground.
    • 螺旋状多匝线圈激发用于在真空等离子体处理器中处理工件的等离子体。 在一个实施例中,两个匝数具有不连续性。 每个不连续点都有一个连接在其上的电容器。 RF源通过匹配网络驱动线圈,连接到一个线圈激励端子的电感器和连接到另一个线圈励磁端子的电容器。 在RF源频率和不连续位置处的电感器和电容器的阻抗使得线圈的驻波电压具有(1)线圈端子相等和相反的值,(2)突然的幅度和斜率 每个不连续点的变化,斜率反转和极性反转,以及(3)三个逐渐驻波极性反转,彼此间隔120°。 两个逐渐的极性反转与方位角对准不连续。 在第二实施例中,一匝具有连接在其上的串联电容器的不连续。 分流电容器连接在不连续和地之间。