FLEETWIDE IMPEDANCE TUNING PERFORMANCE OPTIMIZATION

    公开(公告)号:US20240153743A1

    公开(公告)日:2024-05-09

    申请号:US17981282

    申请日:2022-11-04

    CPC classification number: H01J37/32183 H01J37/32256

    Abstract: Embodiments disclosed herein include a method for field adjusting calibrating factors of a plurality of RF impedance matches for control of a plurality of plasma chambers. In an embodiment, the method comprises collecting and storing in a memory data from operation of the plurality of RF impedance matches, and finding a tune space for each of the plurality of RF impedance matches from the collected data. In an embodiment, the method further comprises finding adjustments to account for variability in each of the plurality of RF impedance matches, finding adjustments to variable tuning elements of the plurality of RF impedance matches to account for time varying and process related load impedances, and the method further comprises obtaining operating windows for the variable tuning elements in the plurality of RF impedance matches.

    Impedance tuning utility of vector space defined by transmission line quantities

    公开(公告)号:US12301199B2

    公开(公告)日:2025-05-13

    申请号:US17737677

    申请日:2022-05-05

    Abstract: Embodiments disclosed herein include a method of impedance tuning in a semiconductor processing tool. In an embodiment, the method comprises measuring a voltage and a current of a transmission line, converting an analog voltage signal and an analog current signal into a digital voltage signal and a digital current signal, calculating a u-vector from the digital voltage signal and the digital current signal, calculating a C1 position of a first capacitor with real components of the u-vector, and calculating a C2 position of a second capacitor with imaginary components of the u-vector.

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