Flexible radio-frequency single-crystal germanium switch on plastic substrates

This Letter presents the realization and characterizations of the flexible radio-frequency (RF)/microwave switches on plastic substrates employing single-crystal germanium (Ge) nanomembranes. The fabricated flexible Ge single-pole, single-throw (SPST) switches display high frequency responses (e.g.,...

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Bibliographic Details
Published in:Applied physics letters 2014-04, Vol.104 (16)
Main Authors: Qin, Guoxuan, Cai, Tianhao, Yuan, Hao-Chih, Seo, Jung-Hun, Ma, Jianguo, Ma, Zhenqiang
Format: Article
Language:English
Subjects:
Applied physics
Germanium
Insertion loss
Radio frequency
Single crystals
Substrates
Switches
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Summary:This Letter presents the realization and characterizations of the flexible radio-frequency (RF)/microwave switches on plastic substrates employing single-crystal germanium (Ge) nanomembranes. The fabricated flexible Ge single-pole, single-throw (SPST) switches display high frequency responses (e.g., insertion loss of 10 dB at up to ∼13 GHz). RF performance tradeoff exists for the flexible Ge switches and the major affecting parameters are determined. The flexible Ge SPST switch shows better RF property to that of the flexible Si SPST switch. Underlying mechanism is investigated by theoretical analysis and modeling of switches with different structures.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4872256