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研究生中文姓名:劉頌凡
研究生英文姓名:Liu, Sung-Fan
中文論文名稱:4.5GHz介質諧振帶通濾波器設計實現與分析
英文論文名稱:Design, Realization and Analysis of 4.5GHz Dielectric Resonator Bandpass Filter
指導教授姓名:吳宗達
口試委員中文姓名:教授︰程光蛟
副教授︰譚仕緯
副教授︰林漢年
業界委員︰吳東義
助理教授︰吳宗達
學位類別:碩士
校院名稱:國立臺灣海洋大學
系所名稱:電機工程學系
學號:10453051
請選擇論文為:應用型
畢業年度:105
畢業學年度:104
學期:
語文別:中文
論文頁數:41
中文關鍵詞:介質諧振器帶通濾波器高階模態抑制
英文關鍵字:Dielectric Resonator (DR)Bandpass FilterHigher Order Mode Suppression
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本論文使用介質諧振器(Dielectric Resonator)設計應用在C頻段,中心頻率為4.5GHz、頻帶寬度為4.486GHz - 4.514GHz的空腔型介質諧振帶通濾波器。介質諧振器的優點是體積小、低損耗,故用此來設計實現小體積、高Q值的帶通濾波器。透過電磁模擬軟體,得到相對應的介質諧振腔大小,並利用耦合係數法及群延遲法,透過模擬分析、推導對應出其理論的耦合量及輸出入阻抗大小。本論文將整個濾波器的設計過程建立出一套標準程序,讓複雜的設計流程得以簡化,使設計介質諧振濾波器更快速、簡便。實際製作出的成品,透過Ness調測法調整空腔與隔板螺絲,最後量測到的結果在通帶內的折返損失(Return Loss)均大於23dB,通帶內的插入損失(Insertion Loss)為1.75dB。在截止帶的插入損失均符合預設規格。
本論文所設計的介質諧振器模態為TE01,在此模態附近,會產生許多的高階模態,故在論文中設計出步階阻抗同軸低通濾波器及同軸梳型帶通濾波器,來抑制這些高階模態。步階阻抗同軸低通濾波器的設計較為簡單,但設計階數較高。同軸梳型帶通濾波器比介質諧振濾波器有較寬的無諧波帶寬,設計的方法跟介質濾波器相同,選用階數可較低。最後將三種濾波器串連後,透過全波模擬軟體進行分析,證實使用低通濾波器、同軸梳型帶通濾波器、或兩者之組合確實可以抑制介質諧振器所產生的高階模態。
In this thesis, we present the design and implementation of a dielectric resonator (DR) bandpass filter with center frequency of 4.5 GHz and bandwidth of 28 MHz. The dimension of the resonator is determined by the 3-D full-wave electromagnetic simulator HFSS. The method of coupling coefficient and group delay is used to determine the coupling between two resonators and the in/output coupling. A standard operating procedure is built to design the bandpass dielectric filter so that one can design the DR cavity filter more quickly. The model we finally made is tuned by a method from Ness. The measurement results show that the return loss in the passband is 23dB and the insertion loss in the passband is 1.75dB. The insertion loss in the stopband all meets the specifications.
The traditional TE01 mode is used in our design of the DR bandpass filter, however, this mode has spurious issues due to its nature as a higher order mode. To suppress the higher order modes, the coaxial stepped-impedance lowpass filter and coaxial combline bandpass filter are designed. The design of the coaxial stepped-impedance lowpass filter is easy, however, it needs higher orders for suppressing out-of-band spurious modes of DR cavity filter. The coaxial combline bandpass filter has wide stopband that the first spurious passband can be pushed to a higher frequency. In addition, the spurious response of the DR cavity filter can be suppressed by low-order coaxial combline filter.
Finally, three kinds of combinations for the DR cavity filter, the coaxial stepped-impedance lowpass filter, and the coaxial combline bandpass filter are analyzed by HFSS. The simulation results show that the use of the coaxial stepped-impedance lowpass filter, and the coaxial combline bandpass filter can suppress the higher order modes of DR cavity filter.
摘要.............I
Abstract........II
圖次............IV
表次.............V

第一章 緒論 1
1.1介質諧振器簡介 1
1.2介質諧振濾波器特性及發展 1
1.3研究目的與動機 4
1.4論文架構 4
第二章 介質諧振帶通濾波器設計 5
2.1設計規格與流程 5
2.2濾波器選用與參數設計 7
2.3類比電路模擬(AWR Microwave Office) 9
2.4全波電路模擬(Ansoft HFSS) 10
第三章 實作與量測 17
3.1濾波器調測 17
3.2實測結果 24
第四章 高諧模態抑制分析 27
4.1步階阻抗(Step-Impedance)同軸低通濾波器 28
4.2同軸梳型(Coaxial Combline)帶通濾波器 34
第五章 結論與未來展望 39
5.1結論 39
5.2未來展望 39
參考文獻 40

[1]R. D. Richtmyer, ”Dielectric resonators” , J. Appl. Phys. 10, pp. 391-398, June ,1939.
[2]L. Xiao-Peng and K. A. Zaki, “Modeling of cylindrical dielectric resonators in rectangular waveguides and cavities” , IEEE Trans. Microwave Theory Tech., Vol. 41, No. 12, pp. 2174-2181, Dec. 1993.
[3]K. A. Zaki and C. Chunming, ” New results in dielectric-loaded resonators” , IEEE Trans. Microwave Theory Tech., Vol. 34, No. 7, pp. 815-824, July 1986.
[4]D. Kajfez and P. Guillon, “Dielecrtric resonators” , Artech House ,Norwood, MA, 1986.
[5]R. R. Mansour, “Filter technologies for wireless base stations” , IEEE Microwave Mag., Vol. 5,No. 1, pp. 68-74, March 2004.
[6]V. Walker and I. C. Hunter, “Design of triple mode resonator transmission filters” , IEEE Microwave Wireless Compon. Lett., Vol. 12, 215-217, June 2002.
[7]L. Ji-Fuh and B. William, ” High-Q TE01 mode DR filters for PCS wireless base stations” , IEEE Trans. Microwave Theory Tech. MTT-46, pp.2493-2500, 1998.
[8]R. Weily and A. S. Mohan, “Mixed combline and HE11 mode dielectric resonator filter with improved spurious performance” , IEEE Trans. Microwave Conference Proceedings, pp. 805-808, Dec. 1997.
[9]Amdreza Salehi, Raja K. Reddy, Teppo Lukkarila, and Solaiman Amir,” Spurious suppression of dielectric filters in practical wireless systems” , IEEE Trans. Microwave Symposium Digest, pp. 1087 – 1090, June 2008.
[10]C. Kudsia, R. Cameron, and W. C. Tang, “Innovations in microwave filters and multiplexing networks for communications satellite systems” , IEEE Trans. Microwave Theory Tech., Vol. 40, No. 6, pp. 1133-1149, June 1992.
[11]R. R. Mansour, S. Ye, S. Peik, V. Dokas,and B. Fitzpatrick, “Quasi dual-mode resonators” , IEEE Trans. Microwave Theory Tech. MTT-48, No. 12, pp. 2467-2481, Dec. 2000.
[12]R. Zhang and R. R. Mansour, ” Dielectric resonator filters fabricated from high-K ceramic substrates” , IEEE-IMS, June 2006.
[13]Hai Hu and Ke-Li Wu, ”A dual-mode dielectric resonator filter with planar coupling configuration” , IEEE Trans. on Microwave Theory and Techniques,Vol. 61,No. 1,pp. 131-138, Jan. 2013.
[14]Cristiano Tomassoni, Simone Bastioli, and Richard V. Snyder, ”Pseudo-elliptic in-linefilters with dielectric resonators in propagating waveguide” , IEEE MTT-S International Microwave Symposium, May 2015.
[15]T. S. Saad, “Microwave engineers' handbook” , Artech House, Norwood, MA, 1971.
[16]G. Matthaei, L. Young, and E. M. T. Jones, ”Microwave filters, impedance-matching networks, and coupling structures” , Artech House, Norwood, MA, 1980.
[17]J. Hong and M. J. Lancaster, “Microstrip filters for RF/Microwave Applications” , Wiley, New York, 1966.
[18]R. J. Cameron, R. Mansour,and C. M. Kudsia, ”Microwave filters for communication systems : fundamentals, design and applications” , Wiley, New York, 2007.
[19]J. B. Ness, ”A unified approach to the design, measurement, and tuning of coupled-resonator filters” , IEEE Trans. Microwave Theory Tech. MTT-46, pp. 343-351, 1998.
[20]R. S. Kwok and Ji-Fuh Liang, ”Characterization of high-Q resonators for microwave filter applications” , IEEE Trans. Microwave Theory Tech. MTT-47, No.1, pp. 111-114, Jan. 1999.
[21]G. L. Matthaei, “Comb-line band-pass filters of narrow or moderate bandwidth” , Microwave J., vol. 6, pp. 82-91, Aug. 1963.
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