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收集所有交通大學研究人員與學生個人或團體所發表之各項學術著作，涵蓋期刊論文、教師專書、學位論文等項。;;Collections of Publications of NCTU Researchers and Students Like Journal Papers and Thesis.

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🏛️國立陽明交通大學機構典藏

Author: search.filters.author.Chen, Wen-HuiSubject: search.filters.subject.coupling coefficient

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    Three-dimensional fully symmetric inductors, transformer, and balun in CMOS technology
    (2007-07-01)
    Chen, Wei-Zen
    ;
    Chen, Wen-Hui
    ;
    Hsu, Kuo-Ching
    ;
    電子工程學系及電子研究所
    ;
    Department of Electronics Engineering and Institute of Electronics
    This paper presents novel three-dimensional (3-D) symmetric passive components, including inductors, transformers, and balun. Layout areas of these components are drastically reduced by 32% to 70%, while the symmetry of the input and the output ports is still maintained. The inductance mismatch in the 3-D transformer is less than 0.1%, and the coupling coefficient can be up to 0.77. The 3-D balun manifests less than 0.6-dB gain mismatch for 10-GHz range, and the phase error is less than 7 degrees from 1- to 10-GHz frequency range according to measurement results. Furthermore, the self-resonant frequency (f(SR)) of the proposed architecture is improved by 32% to 61% in contrast to their planar counterparts. On the other hand, the quality factor is degraded by less than 2 for the sake of using lower metal layers. The distributed capacitance model is utilized to validate their superiorities in f(SR). All the devices are fabricated in a generic 0.18-mu m CMOS process.