<link rel="stylesheet" href="styles.cf390c6bfbe7555f.css">

學術出版;;Publications

Permanent URI for this communityhdl:11536/1

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.

Browse

🏛️國立陽明交通大學機構典藏

Author: search.filters.author.Chiou, Yi-ChyunSubject: search.filters.subject.multimode

Search Results

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item type:Item,
    Planar Multimode Resonator Bandpass Filters with Sharp Transition and Wide Stopband
    (2008)
    Chiou, Yi-Chyun
    ;
    Lee, Yu-Feng
    ;
    Kuo, Jen-Tsai
    ;
    Chen, Chi-Chen
    ;
    電信工程研究所
    Planar bandpass filters are contrived with a very sharp transition band and wide stopband based on multimode stepped-impedance resonators (SIRs). The SIR is tapped with two open stubs at its center and two more stubs at the junctions of the low- and high-impedance sections. By properly trimming the stub lengths, the leading five resonances of the SIR have a close proximity and constitute the passband. Besides, two transmission zeros can be created at both upper and lower sides of the passband. It is believed that the SIR has the most resonant modes in comparison with those in open literature. Based on the multimode resonator, a single-resonator bandpass filter with five transmission poles is designed to have a fractional bandwidth of 35%. In addition, by cascading two such resonators, a tenth-order filter is designed, fabricated and measured. Good agreement between simulation and measured results is obtained.
  • Thumbnail Image
    Item type:Item,
    Broadband quasi-Chebyshev bandpass filters with multimode stepped-impedance resonators (SIRs)
    (2006-08-01)
    Chiou, Yi-Chyun
    ;
    Kuo, Jen-Tsai
    ;
    Cheng, Eisenhower
    ;
    電信工程研究所
    ;
    Institute of Communications Engineering
    Planar broadband bandpass filters of order up to 9 are synthesized based on the multimode property of stepped-impedance resonators (SIRs). Based on the transmission line theory, the modal frequencies of the SIRs are calculated based on the impedance and length ratios of its hi- and low-Z segments. In the synthesis, the SIR coupling schemes are determined by the split mode graphs. Using one, two, two, three, and three dual- or triple-mode SIRs, quasi-Chebyshev filters with,, six, six, eight, and nine transmission poles, respectively, are four synthesized with a fractional bandwidth (BW) Delta = 50%. Emphasis is placed not only on designing the I/O coupling structures for matching the external Q (Q(ext)) and the circuit BW, but also on matching the resonant peaks of the circuit, with. the nominal Chebyshev poles. Measured results of experimental circuits show good agreement with simulated responses.
  • Thumbnail Image
    Item type:Item,
    High Selectivity Ultra-Wideband (UWB) Mutimode Stepped-Impedance Resonators (SIRs) Bandpass Filter with Two-Layer Broadside-Coupled Structure
    (2007)
    Kuo, Jen-Tsai
    ;
    Chiou, Yi-Chyun
    ;
    Cheng, Eisenhower
    ;
    電信工程研究所
    ;
    Institute of Communications Engineering
    Ultra-wideband (UWB) bandpass filter with high selectivity response is contrived on the multimode characteristic of stepped-impedance resonators (SIRs). To achieve strong coupling requirement, two-layer broadside-coupled structure is employed. Using three triple-mode SIRs, quasi-Chebyshev filter with nine transmission poles is synthesized with a fractional bandwidth (BW) Delta = 110%. Measured results of experimental circuits show good agreement with simulated responses.