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- W2744280003 abstract "The power handling capabilities of inline phase-change switches (IPCS's) at radio frequencies (RF) have been correlated with the dc threshold voltage (V <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>th</sub> ) of the devices. The dependence of V <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>th</sub> on microheater pulsing parameters and device layout has been characterized, accompanied by observation of the size of the amorphous chalcogenide region through scanning transmission electron microscopy. All observations are consistent with threshold field (F <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>th</sub> ) of nominally 50:50 GeTe of 12.6 V/μm. Use of W-based microheaters in the IPCS processes has improved device performance and reliability, with increases in the product of cutoff-frequency (F <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>co</sub> ) and V <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>th</sub> over previous IPCS devices using NiCrSi microheaters. The improved devices demonstrated power handling capabilities up to 29 dBm in a 50-Ω system for a switch with submicrometer dimensions, where the improvement is attributed to the larger amorphous zone created at the minimum power to amorphize. These improved devices demonstrate the feasibility of these switches in both transmit and receive wireless applications. A correlation between the maximum allowed RF voltage across the OFF-state switch and the dc V <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>th</sub> of the OFF device was observed, indicating the dc V <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>th</sub> is an accurate predictor of RF power handling." @default.
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- W2744280003 date "2017-09-01" @default.
- W2744280003 modified "2023-09-26" @default.
- W2744280003 title "Origin and Optimization of RF Power Handling Limitations in Inline Phase-Change Switches" @default.
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- W2744280003 doi "https://doi.org/10.1109/ted.2017.2730231" @default.
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