臺灣博碩士論文加值系統

本論文主要設計應用於GSM、Wimax、WLAN接收機之濾波器。微波帶通濾波器是一個重要的且不可或缺的元件，在整個系統中佔有相當的地位。
為了提高無線收發機的效能，吾人提出了使用開迴路諧振腔結合步階阻抗諧振腔(SIR)的方式來設計濾波器，其中在步階阻抗諧振腔方面我們分析了改變其長度的比值發現其抑制諧波的比傳統來得好，相對來說亦可將諧波拉近並設計於所需要的頻率中，因此吾人利用此架構來提出兩種濾波器其一為寬頻抑制帶通濾波器，並分別實現於900 MHz (GSM)、2.4GHz (WLAN)以及2.6GHz (WiMAX)，均具有4~8倍頻的抑制、高選擇性以及微型化濾波器。其二為多頻帶濾波器，實現於900MHz(GSM)以及2.6GHz(WiMAX)，利用阻抗的比例關係，且這樣的架構會有寬頻的效果，易於整合於現今通訊產品之要求多功能的需求，然而在2次諧波的抑制上卻稍嫌不足。而在上述之濾波器於模擬與實測上均獲得良好的一致性，
文中所提出之濾波器，其設計簡單，且效果相當良好，相當適合運用於現今之無線通訊接收機之設計中。

This paper proposed the filters of transceiver for GSM, WLAN, WiMAX application. As we know Microwave filters play an important role in the whole system.
In order to improve the performance of wireless transceiver, we combine (Step Impedance Resonator (SIR) with open loop resonator to design filters. We found better harmonic suppression than traditional design by analysing different ratio of length of stubs in SIR. Obviously, it is suitable to shift first harmonic frequency as well. Therefore, we proposed two structures of filters, one is wide stop-band bandpass filters with 4f0 to 8f0 harmonic suppression, high selectivity and compact size at 900GHz (GSM), 2.4GHz(WLAN) and 2.6GHz(WiMAX) and the other is dual band bandpass filter at 900GHz (GSM) and 2.6GHz(WiMAX) approached by adjusting ratio of impedance of stubs with wide pass band property easily conformed to multi-function of modern communication product. But it is hard to suppress second harmonic frequency. Above filters have good agreement between simulation and measurement results.
In this work we use simply structure to realize wide will realize wide stop-band bandpass filters and dual band bandpass filter are more suitable for wireless transceiver nowadays.

致謝………………………………………………………………………..i
摘要……………………………………………………………………….ii
Abstract……………….…………………………………………………iii
目錄……………………………………………………………………...iv
圖目錄…………………………………………………………………...vii
表目錄………………………………………………………..………xi
第一章 緒論………….…………………………………….…...1
1-1研究背景與動機…………………………………………………....1
1-1.1 寬頻抑制帶通濾波器的重要性……………………………...3
1-1.2 雙頻帶通濾波器的重要性........……………………………...3
1-1.3 微帶線濾波器………………………………………………...4
1-2文獻探討……………………………………...…….………………6
1-2.1 寬頻抑制帶通濾波器………………………………………...6
1-2.2 雙頻帶通濾波器……………………………………………...9
1-3內容概要……………………………….……………….…….…...10
第二章 開迴路諧振腔…………………………………….…..11
2-1開迴路諧振腔簡介…………………………………………….….11
2-2三種基本耦合結構……………………………………...…….…..12
2-2.1 電場性耦合(electric coupling)………………………………14
2-2.2 磁場性耦合(magnetic coupling)…………………………….16
2-2.3 混合式耦合(mixed coupling)……...………………………...19
2-3利用微帶線實現開迴路濾波器……………………………….…21
2-4影響耦合係數之相關設計參數……………………………….….22
第三章 設計參數分析…………………………………….…..29
3-1步階阻抗式諧振腔…………………………………………….….29
3-2改變步階阻抗諧振腔中電子長度比例……………...…….……..34
3-3開迴路諧振腔饋入方式……………………………….………….37
3-3.1 對稱饋入(Non-Zero degree feed structure)………………….37
3-2.2 反對稱饋入(Zero degree feed structure)……..….…………..40
3-4 接線式饋入點與負載品質因素(Qsi)分析……………………….42
第四章 寬頻諧波抑制帶通濾波器與雙頻帶通濾波器設計..46
4-1寬頻諧波抑制帶通濾波器…………………………………….….46
4-1.1 應用於900MHz寬頻諧波抑制帶通濾波器………………..47
4-1.2 應用於2.4GHz寬頻諧波抑制帶通濾波器…………………51
4-1.3 應用於2.6GHz寬頻諧波抑制帶通濾波器…………………55
4-2雙頻諧波抑制帶通濾波器…………………………………….….60
第五章 結論…………………………………………………...64
參考文獻…………………………………………………………………65
附 錄…………………………………………………………………70

[1]C. Buntschuh, "High Directivity Microstrip Couplers Using Dielectric Overlays," 1975.
[2]B. Sheleg and B. E. Spielman, "Broad-Band Directional Couplers Using Microstrip with Dielectric Overlays," Microwave Theory and Techniques, IEEE Transactions on, vol. 22, pp. 1216-1220, 1974.
[3]S. L. March, "Phase Velocity Compensation in Parallel-Coupled Microstrip," 1982.
[4]I. J. Bahl, "Capacitively compensated high performance parallel coupled microstrip filters," 1989.
[5]R. Garg and I. J. Bahl, "Characteristics of Coupled Microstriplines," Microwave Theory and Techniques, IEEE Transactions on, vol. 27, pp. 700-705, 1979.
[6] A. Riddle, "High performance parallel coupled microstrip filters," 1988.
[7]K. Jen-Tsai, C. Sin-Ping, and J. Meshon, "Parallel-coupled microstrip filters with over-coupled end stages for suppression of spurious responses," Microwave and Wireless Components Letters, IEEE [see also IEEE Microwave and Guided Wave Letters], vol. 13, pp. 440-442, 2003.
[8]L. Ching-Ku and C. Chi-Yang, "Modified parallel-coupled filter with two independently controllable upper stopband transmission zeros," Microwave and Wireless Components Letters, IEEE [see also IEEE Microwave and Guided Wave Letters], vol. 15, pp. 841-843, 2005.
[9]W. M. Fathelbab and M. B. Steer, "Parallel-coupled line filters with enhanced stopband performances," Microwave Theory and Techniques, IEEE Transactions on, vol. 53, pp. 3774-3781, 2005.
[10]J. Meshon, W. Meng-Huan, and K. Jen-Tsai, "Parallel-coupled microstrip filters with over-coupled stages for multispurious suppression," 2005.
[11]T. Lopetegi, M. A. G. Laso, F. Falcone, F. Martin, J. Bonache, J. Garcia, L. Perez-Cuevas, M. Sorolla, and M. Guglielmi, "Microstrip "wiggly-line" bandpass filters with multispurious rejection," Microwave and Wireless Components Letters, IEEE [see also IEEE Microwave and Guided Wave Letters], vol. 14, pp. 531-533, 2004.
[12]I. Hong, S. W. Fok, W. W. Choi, K. W. Tam, and R. P. Martins, "A novel wiggly-line hairpin filter with 2nd spurious passband suppression," 2004.
[13]P. Hoi-Kai, T. Sio-Weng, and T. Kam-Weng, "Novel wiggly-line interdigital microstrip bandpass filter with/sup rd/rd harmonic suppression," 2003.
[14]T. Lopetegi, M. A. G. Laso, J. Hernandez, M. Bacaicoa, D. Benito, M. J. Garde, M. Sorolla, and M. Guglielmi, "New microstrip “Wiggly-Line” filters with spurious passband suppression," Microwave Theory and Techniques, IEEE Transactions on, vol. 49, pp. 1593-1598, 2001
[15]K. Jen-Tsai, M. Jiang, and C. Hsien-Jen, "Design of parallel-coupled microstrip filters with suppression of spurious resonances using substrate suspension," Microwave Theory and Techniques, IEEE Transactions on, vol. 52, pp. 83-89, 2004.
[16] M. Makimoto, S.Yamashita, “Bandpass Filters Using Parallel Coupled Strip-Line Stepped Impedance Resonators,” IEEE Trans. Microwave Theory Tech., vol.MTT-05, no.12, pp. 1413-1417, 1980.
[17] S. Sun, and L. Zhu, "Novel Design of Dual-Band Microstrip Bandpass Filters with Good In-Between Isolation," Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings, vol. 2, Dec. 2005.
[18] C.M. Tsai, H.M. Lee, C.C. Tsai, " Planar Filter Design With Fully Controllable Second Passband," IEEE Trans. Microwave Theory Tech., vol. 53, No.11, pp. 3429-3439, Nov. 2005.
[19] M.-L Chuang, "Concurrent dual band filter using single set of microstrip open-loop resonators," Electronics Letters, vol. 14No.18 pp. 1013-1014, Sep. 2005.
[20] C.Y. Chen, C.Y. Hsu, and H.R. Chuang, "Design of Miniature Planar Dual-Band Filter Using Dual-Feeding Structures and Embedded Resonators," IEEE Microwave and Wireless Components Letter, vol. 16, No.12, pp. 669-671. Dec. 2002.
[21] S. Sun, and L. Zhu, "Coupling Dispersion of Parallel-Coupled Microstrip Lines for Dual-Band Filters with Controllable Fractional Pass bandwidths," IEEE MTT-S Int. Microwave Symp. Dig., pp. 2195-2198, 2005.
[22] S. Sun, and L. Zhu, "Compact Dual-Band Microstrip Bandpass Filter Without External Feeds," IEEE Microwave and Wireless Components Letter, vol. 15, No.10, pp. 644-646. Oct. 2005.
[23] T.H. Huang, H.J. Chen, C.S. Chang, L.S. Chen, Y.H. Wang, and M.P. Houng, "A Novel Compact Ring Dual-Mode Filter With Adjustable Second-Passband for Dual-Band Applications," IEEE Microwave and Wireless Components Letter, vol. 16, No.6, pp. 360-362. Jun. 2006.
[24]Y.P. Zhang, and M. Sun, "Dual-Band Microstrip Bandpass Filter Using Stepped-Impedance Resonators With New Coupling Schemes," IEEE Trans. Microwave Theory Tech., vol. 54, No.10, pp. 3779-3785, Oct. 2006.
[25]M.H. Weng, H.W. Wu, and Y.K. Su, "Compact and Low Loss Dual-Band Bandpass Filter Using Pseudo-Interdigital Stepped Impedance Resonators for WLANs," IEEE Microwave and Wireless Components Letter, vol. 17, No.3, pp. 187-189. Mar. 2007.
[26]J.S. Hong and M.J. Lancaster, “Theory and Experiment of Novel Microstrip Slow-Wave Open-Loop Resonator Filters,” IEEE Trans. Microwave Theory Tech. vol. 45, No12, Dec. 1997.
[27]J.S. Hong and M.J. Lancaster, “Couplings of Microstrip Square Open-Loop Resonators for Cross-Coupled Planar Microwave filters,” IEEE Trans. Microwave Theory Tech. vol. 44, No12, Dec.1996.
[28]J.S. Hong and M.J. Lancaster, “Microstrip cross-coupled trisection bandpass filters with asymmetric frequency characteristics,” Proc. Inst. Elect. Eng.,pt. H, vol. 146, Feb.1999.
[29]J.S. Hong and M.J. Lancaster, “Cross-coupled microstrip hairpin -Resonator Filters,” IEEE Trans. Microwave Theory Tech. vol. 46, pp.118-122 , Jan. 1998.
[30]E. G. Cristal, “Tappd-line coupled transmission lines with applications to interdigital and combine filter,” IEEE Trans. Microwave Theory Tech. vol. 23, pp.1007-1012 , Dce. 1975.
[31]J. S. Wong, "Microstrip Tapped-Line Filter Design," Microwave Theory and Techniques, IEEE Transactions on, vol. 27, pp. 44-50, 1979.
[32]K. Jen-Tsai and E. Shih, ”Microstrip Stepped Impedance Resonators bandpass filter with an extended optimal rejection bandwidth,” IEEE Trans. Microwave Theory Tech. vol. 51, no. 5, pp.1554-1559, May. 2003.
[33]C. F. Chen, T. Y. Huang, R. B. Wu, ”Design of Microstrip Bandpass Filters with Multiorder Spurious-Mode Suppression,” IEEE Trans. Microwave Theory Tech. vol. 53, pp.3788-3793, Mar. 2005.
[34]K. U-yen, E. J. Wollack, T. A.Doiron, J.Papapolymerou, J.Lasker, “A Planar Bandpass Filter Design With Wide Stopband Using Double Split-End Stepped Impedance Resonators,” IEEE Trans. Microwave Theory Tech. vol. 54, no. 3, pp.1237-1244, Mar. 2006.
[35] J.S. Hong and M.J. Lancaster, “Microstrip Filter for RF/Microwave Applications.” New York: Wily, 2001, ch8.
[36]G. L. Matthaei, L.Young, and E.M.T. Jones, Microwave Filters, Impedance-Matching Networks, and Coupling Structures.Norwood, MA: Artech House,1980, ch5.