- 专利标题: Phase-change material (PCM) radio frequency (RF) switches with capacitive couplings between lower portions and upper portions of RF terminals
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申请号: US16681007申请日: 2019-11-12
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公开(公告)号: US10886212B2公开(公告)日: 2021-01-05
- 发明人: Nabil El-Hinnawy , Gregory P. Slovin , Jefferson E. Rose , David J. Howard
- 申请人: Newport Fab, LLC
- 申请人地址: US CA Newport Beach
- 专利权人: Newport Fab, LLC
- 当前专利权人: Newport Fab, LLC
- 当前专利权人地址: US CA Newport Beach
- 代理机构: Farjami & Farjami LLP
- 主分类号: H01L23/522
- IPC分类号: H01L23/522 ; H01L45/00 ; H01L23/66
摘要:
A radio frequency (RF) switch includes a phase-change material (PCM), a heating element underlying an active segment of the PCM and extending outward and transverse to the PCM, and RF terminals having lower metal portions and upper metal portions. At least one of the lower metal portions can be ohmically separated from and capacitively coupled to passive segments of the PCM, while the upper metal portions are ohmically connected to the lower metal portions. Alternatively, the lower metal portions can be ohmically connected to passive segments of the PCM, while a capacitor is formed in part by at least one of the upper metal portions. Alternatively, at least one of the RF terminals can have a trench metal liner separated from a trench metal plug by a dielectric liner. The trench metal liner can be ohmically connected to passive segments of the PCM, while the trench metal plug is ohmically separated from, but capacitively coupled to, the trench metal liner.
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