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研究生:林永順
研究生(外文):Yong-Shun Lin
論文名稱:利用任意耦合長度設計平行耦合微帶線帶通濾波器及其微小化
論文名稱(外文):A Compact Parallel Coupled Microstrip Bandpass Filter Design with Arbitrary Coupled Length
指導教授:郭仁財
指導教授(外文):Jen-Tsai Kuo
學位類別:碩士
校院名稱:國立交通大學
系所名稱:電信工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:66
中文關鍵詞:任意耦合長度帶通濾波器
外文關鍵詞:Filter Design with Arbitrary Coupled Length
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本篇論文利用「任意耦合長度」,設計平行耦合微帶線帶通濾波器,達到電路微小化的設計。本文改變一般平行耦合微帶線濾波器的設計流程,先固定每一段耦合線段的線寬、間距,再利用公式求得每段耦合線段所需的耦合長度。為了達到電路微小化及降低成本,參考近年一些文獻以及利用模擬軟體,分析折疊共振腔的共振特性。經由模擬結果發現,可以將電路尺寸大幅地縮小很多,且不影響濾波器的通帶響應。文中設計並製作數個三階與五階的柴式帶通濾波器電路:中心頻率為2.45GHz,比例頻寬10%、20%,,並與實際量測結果比較。

This thesis aims at designing microstrip bandpass filters with compact size. Coupled stages with folded lines are used. To make the effectiveness in reducing the circuit size as efficient as possible, both the width and gap of the coupled microstrip lines are chosen as small as possible. We analyze and compensate the folded resonators and coupled folded resonators, so that bandpass filters can be constructed with coupled multiple folded lines. A scheme for design coupled stages with an arbitrary coupled length is also incorporated into the design, for the convenience of resonator folding. Several Chebyshev filters of orders three and five are fabricated and measured to demonstrate the idea.

目錄
中文摘要………………………………………………………………………… Ⅰ
英文摘要………………………………………………………………………… Ⅱ
致謝……………………………………………………………………………… Ⅲ
目錄……………………………………………………………………………… Ⅳ
圖目錄…………………………………………………………………………… Ⅴ
表目錄…………………………………………………………………………… ⅥI
第一章 簡介………………………………………………………………….. 1
第二章 微帶線帶通濾波器之理論…………………………………………... 5
2.1 平行耦合微帶線濾波器………………………………………. 6
2.2 使用任意映像阻抗之設計…………………………………….. 11
2.3 耦合係數與耦合長度的關係………………………………….. 15
第三章 微帶線帶通濾波器的設計流程……………………………………... 23
3.1 平行耦合微帶線………………………………………………. 24
3.2 使用任意耦合長度與其微小化電路………………………….. 26
3.3 共振腔之折疊…………………………………………………. 28
3.3.1 共振腔的折疊與補償…………………………………. 28
3.3.2 折疊時的限制………………………………………… 30
3.3.3 折疊共振腔的耦合……………………………………. 31
3.3.4 設計實例……………………………………………… 32
第四章 模擬與量測………………………………………………………….. 46
第五章 結論………………………………………………………………… 64
參考論文………………………………………………………………………… 65

References
1. J.-S. Hong and M.J. Lancaster, “Microstrip Filters for RF/Microwave applications,” New York,Wiley,2001.
2. J.-S. Hong and M.J. Lancaster, “A novel microwave periodic structure─The ladder microstrip line,”Microwave and Optical Technology Letters,9,July 1995,207-210.
3. J.-S. Hong and M.J. Lancaster, “Microstrip slow-wave resonator filter,” IEEE MTT-S,Digest, 1997,713-716.
4. J.A. Curits and S.J. Fiedziuszko, “Multi-layered planar filters based on aperture coupled dual-mode microstrip or stripline resonators,” IEEE MTT-S,Digest, 1992,1203-1206.
5. D. Swanson, “Thin-film lumped-element microstrip filters,” IEEE MTT-S,Digest, 1989,671-674.
6. M. Murase, Y.Sasaki, A. Sasabata, H. Tanaka, and Y. Ishikawa, “Multi-chip transmitter/receiver module using high dielectric substrates for 5.8 GHz ITS applications,” IEEE MTT-S, Digest, 1999,211-214.
7. Andreas Weisshaar and Vijai K. Tripathi, “ Design of compact multilevel folded-line bandpass filters,” IEEE Trans. On Microwave Theory and Techniques, vol.49, October 2001.
8. J.-S. Hong and M.J. Lancaster, “ Coupling of microstrip square open-loop resonator for cross coupled planar microwave filters,” IEEE Trans. Microwave Theory Tech.,vol.44,pp2099-2108,Nov.1996.
9. J.-S. Hong and M.J. Lancaster, “Compact microwave elliptic function filter using novel microstrip meander open-loop resonator,” Electronics Letters,32, 1996,pp.563-564.
10. George L. Matthaei, Leo Young and E. M. T. Jones, “ Microwave filters, impedance-matching networks, and coupling structures,” Artech House, Dedham, Mass., 1980.
11. Seymour B. Cohn, “ Parallel-Coupled Transmission-Line-Resonator Filters,” IEEE Trans. on Microwave Theory and Techniques, vol. MTT-6,pp.223-231,Apr. 1958.
12. Dal Ahn , Chul-Soo Kim , Min-Ho Chung, Dong-Hwan Lee, Dae-Won Lew, Heon-Jin Hong, “ The design of parallel coupled line filter with arbitrary image impedance,” IEEE MTT-S 1998.
13. E.M.T. Jones and J.T. Bolljahn, “ Coupled-strip-transmission-line filters and directional couplers,” IRE Trans., vol. MTT-4, pp.75-81; April, 1956.
14. C. Lim and Vijai K. Tripathi, “ Design of compact multilevel folded-line RF couplers,” IEEE Trans. on Microwave Theory and Techniques, vol.47, Dec. 1999.
15. A. Weisshaar and V. K. Tripathi, “ Compact folded line rat-race hybrid couplers,” IEEE Trans. On Microwave Theory and Guided Wavw Letters, vol.10, Feb. 2000.
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