Title page for 985201083


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Student Number 985201083
Author Chun-I Wu(吳俊儀)
Author's Email Address No Public.
Statistics This thesis had been viewed 406 times. Download 680 times.
Department Electrical Engineering
Year 2010
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Bandpass filters by using multiple-mode resonators
Date of Defense 2011-07-21
Page Count 47
Keyword
  • bandpass filters
  • multiple-mode resonators(MMR)
  • Abstract The applications of the multiple-mode resonators are presented in this thesis. With the multiple-mode resonators characteristics, the multiple-mode resonator can be designed in quad-band bandpass filter and compact sharp-rejection broadband bandpass filter with a wide stopband.
    The quad-band bandpass filter by splitting half-wavelength resonator with eighth-wavelength stub-loaded resonator is presented. The split half-wavelength resonator can improve the freedom of the external quality factor of each passband. The configuration of the quad-band bandpass filter can be determined from odd- and even-mode excitative path. Moreover, the transmission zeros on both sides of the passband, which can greatly improve the selectivity of quad-band bandpass filter. The core circuit size is 0.09λg2 at the center frequency.
    In addition, a compact sharp-rejection broadband bandpass filter with a wide stopband is also presented. The major building block of the proposed filter is a half-wavelength resonator loaded by a meandering coupled line. The loaded resonator could provide three transmission poles in the passband and two transmission zeros beside the passband. By adjusting the dimensions of the meandering coupled line and using multi-path cancellation technique, one can control multiple transmission zeros for a wide stopband. From 2.3 to 4.1GHz, the measured return loss is greater than 15 dB, and the measured insertion loss is less than 0.8 dB. The maximum group delay variation is 0.8 ns, and the core circuit size is 0.05λg2 at the center frequency. For the upper stopband performance, the rejection level is greater than 20 dB from 4.3 to 10 GHz.
    Table of Content 摘要i
    Abstractii
    致謝iii
    目錄iv
    圖目錄v
    表目錄vii
    第一章 緒論1
    1-1 研究動機1
    1-2 文獻回顧2
    1-3 章節介紹5
    第二章 多重模態共振器之分析6
    2-1 簡介6
    2-2 多重模態共振器之模態分析6
    2-2-1 開路殘帶為45度7
    2-2-2 開路殘帶為180度9
    2-3 傳輸零點的分析11
    第三章 四頻段帶通濾波器14
    3-1 簡介14
    3-2 設計14
    3-3 量測與模擬21
    3-4 結論24
    第四章 微小型高選擇度的寬頻寬止帶帶通濾波器25
    4-1 簡介25
    4-2 設計26
    4-2-1 微小化26
    4-2-2 合成通帶32
    4-3 量測與模擬結果40
    4-4 結論42
    第五章 總結43
    參考文獻44
    Publication list47
    Reference [1]P. Mondal and M.K. Mandal, “Design of dual-band bandpass filters using stub-loaded open-loop resonators,” IEEE Trans. Microw. Theory Tech., vol. 56, no. 1, pp. 150-155, Jan. 2008.
    [2]X.-Y. Zhang, J.-X. Chen, Q. Xue and S.-M. Li, “Dual-Band bandpass filters using stub-loaded resonators,” IEEE Microw. Wirel. Compon. Lett., vol. 17, no. 8, pp. 583-585, Aug. 2007.
    [3]C.-H. Lee, C.-I. G. Hsu and H.-K. Jhuang, “Design of a new tri-band microstrip BPF using combined quarter-wavelength SIRs,” IEEE Microw. Wirel. Compon. Lett., vol. 16, no. 11, pp. 594-596, Nov. 2006.
    [4]Q.-X. Chu and X.-M. Lin, “Advanced triple-band bandpass filter using tri-section SIR,” Electron. Lett., vol. 44, no. 4, pp. 295-296, 2008.
    [5]C.-I. G. Hsu, C.-H. Lee and Y.-H. Hsieh, “Tri-band bandpass filter with sharp passband skirts designed using tri-section SIRs,” IEEE Microw. Wirel. Compon. Lett., vol. 18, no. 1, pp. 19-21, Jan. 2008.
    [6]F.-C Chen, Q.-X. Chu and Z.-H.Tu, “Tri-band bandpass filter using stub loaded resonators,” Electron. Lett., vol. 44, no. 12, pp. 747-749, 2008.
    [7]C.-W. Tang and L.-P. Lu, “Design of triple-passband bandpass filter with interdigital resonators,” Electron. Lett., vol. 44, no. 25, pp. 1472-1473, 2008.
    [8]X.-Y. Zhang, Q. Xue and B.-J. Hu, “Planar tri-band bandpass filter with compact size,” Microw. Wirel. Compon. Lett., vol. 20, no. 5, pp. 262-264, May 2010.
    [9]J.-C. Liu, J.-W. Wang, B.-H. Zeng and D.-C. Chang, “CPW-fed dual-mode double-square-ring resonators for quad-band filters,” IEEE Microw. Wirel. Compon. Lett., vol. 20, no. 3, pp. 142-144, Mar. 2010.
    [10]C.-M. Cheng and C.-F. Yang, “Develop quad-band (1.57/2.45/3.5/5.2 GHz) bandpass filters on the ceramic substrate,” IEEE Microw. Wirel. Compon. Lett., vol. 20, no. 5, pp. 268-270, May 2010.
    [11]L.-Y. Ren, “Quad-band bandpass filter based on dual-plane microstrip/DGS slot structure,” Electron. Lett., vol. 46, no. 10, pp. 691-692, May 2010.
    [12]J.-S. Hong and M. J. Lancaster, Microstrip Filters for RF/Microwave Applications. New York: Wiley, 2001.
    [13]H. Shaman and J.-S. Hong, “Input and output cross-coupled wideband bandpass filter,” IEEE Trans. Microwave Theory Tech., vol. 55, no. 12, pp. 2562-2568, Dec. 2007.
    [14]S. Sun, L. Zhu and H.-H. Tan, “A compact wideband bandpass filter using transversal resonator and asymmetrical interdigital coupled lines,” IEEE Microw. Wireless Compon. Lett., vol. 18, no. 3, pp. 173-175, Mar. 2008.
    [15]R. Gomez-Garcia and J.I. Alonso, “Design of sharp-rejection and low-loss wideband planar filters using signal-interference techniques,” IEEE Microw. Wireless Compon. Lett., vol. 15, no. 8, pp. 530-532, Aug. 2005.
    [16]J.-R. Lee, J.-H. Cho and S.-W. Yun, “New compact bandpass filter using microstrip λ/4 resonators with open stub inverter,” IEEE Microwave Guided Wave Lett., vol. 10, no. 12, pp. 526-527, Dec. 2000.
    [17]L. Zhu and W. Menzel, “Compact microstrip bandpass filter with two transmission zeros using a stub–tapped half-wavelength line resonator,” Microw. Wireless Compon. Lett., vol. 13, no. 1, pp. 16-18, Jan. 2003.
    [18]C. Quendo, E. Rius, C. Person, J.-F. Favennec, Y. Clavet, A. Manchec, R. Bairavasubramanian, S. Pinel, J. Papapolymerou and J. Laskar, “Wide band, high rejection and miniaturized fifth order bandpass filter on LCP low cost organic substrate,” IEEE MTT-S Int. Dig., Jun. 2005, pp. 2203-2205
    Advisor
  • Wen-Hua Tu(凃文化)
  • Files
  • 985201083.pdf
  • approve immediately
    Date of Submission 2011-08-09

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