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研究生：	林文正 Lin, Wen-Jeng
論文名稱：	射頻前端模組濾波器電路微小化之研究 Investigation on The Miniaturized Bandpass Filters in RF Module
指導教授：	洪茂峰 Houng, Mau-Phon
學位類別：	博士 Doctor
系所名稱：	電機資訊學院 - 微電子工程研究所 Institute of Microelectronics
論文出版年：	2010
畢業學年度：	98
語文別：	中文
論文頁數：	76
中文關鍵詞：	帶通濾波器、雙頻、寬頻、超寬頻、缺陷頻帶、破壞性接地面架構、諧波抑制、分裂模態激發
外文關鍵詞：	Bandpass filter (BPF), dual-band, wideband, ultra wideband (UWB), notch band, defected ground structure (DGS), spurious suppression, split-mode excitations (SME)
相關次數：	點閱：104 下載：6
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在本篇論文中，本文將針對現今微波帶通濾波器中，最主要的五種應用功能加以進一步的研究。這五方面包括: 在微小尺寸設計下，分別實現雙頻、寬頻、超寬頻、缺陷頻帶、以及具諧波抑制之高效能微帶線帶通濾波器。首先，本文將提出一個以步階阻抗簡化式交錯耦合諧振器搭配槽孔耦合來實現雙頻帶通濾波器電路之新方法。利用一對步階阻抗簡化式交錯耦合諧振器來形成交錯耦合路徑，進而達成雙頻帶具有高選擇性，再利用槽孔耦合路徑來降低傳輸損耗並得以改善雙頻濾波器的頻寬。

第二部份，針對寬頻濾波器的設計，乃是利用四分之三波導波長所構成之新型寬頻環狀微帶線帶通濾波器。我們在傳統環型共振器的微擾點位置上改以灌孔接地來做設計，如此將使得環形濾波器由兩段四分之ㄧ波導波長短路殘段外加一段四分之ㄧ波導波長開路殘段所組成，因此尺寸上比傳統環型濾波器具有優勢。該電路利用兩段四分之ㄧ波導波長短路殘段之長度與阻抗，即可以輕易地控制所要的中心頻率以及頻寬的表現。另外只要在不甚影響主頻特性的四分之ㄧ波導波長開路殘段上設計傳統的開路殘段，藉此產生需要的兩個抑制諧振點，即可改善頻帶外的特性。

第三部份，本文設計一個頻帶到 20 GHz 具有至少 20 dB 諧波抑制之寬頻帶通濾波器。所提出的寬頻帶通濾波器，由四分之ㄧ波導波長短路殘段與分枝殘段共灌孔架構交替配置而成，並以低通濾波器來取代電路中的非諧振線段，藉以不增加額外尺寸下來抑制高頻處的諧波。比較於傳統的共灌孔架構，本文利用簡單的阻抗分配觀念有效改善了共灌孔的電路尺寸，不但縮減了近 70% 的電路面積，也減少了傳統利用曲延配置的灌孔架構所延伸的傳輸損耗問題。

接著，在第四部份，本文提出一個新的方法，以破壞接地面架構之雙行為電路模型來實現超寬頻帶通濾波器中所需要的缺陷頻帶設計。不同於傳統破壞接地面的設計觀念，破壞接地面架構之雙行為電路模型乃是利用開路金屬線佈局在傳統破壞接地面之內部，然後透過電磁耦合的機制來激發缺陷諧振之設計理念。該破壞接地面架構之雙行為電路模型將在本論文中詳加討論並說明。

最後，本文將針對廣泛被討論的高頻諧波抑制問題做出解決的方案。本文提出一個不同於傳統抑制架構的設計理念-分裂模態激發，來作為抑制高頻諧波的應用。基於所提出分裂模態激發理論，本文採取四分之ㄧ波導波長之諧振電路來操作主頻率，並利用不同的激發模態來達成寬頻抑制的效果。

本篇論文將由各種的電氣特性及電路模型詳盡地討論各項濾波器特性之新穎設計理念，同時，提出相關量測結果，以佐證理論的分析。

In this thesis, we study on the improvement of five major applications of the modern microwave bandpass filters. Microwave bandpass filters will be designed to have the dual-band, wideband, ultra wideband (UWB), notch band, and harmonic suppression in compact size. First, a novel approaches for dual-band bandpass filter design utilizing stepped impedance simplified cascaded quadruplet resonators(SI-SCQRs) with slot coupling. A pair of SI-SCQRs forms a cross coupled dual-band filtering path to provide high selectivity passband response, and a slot coupling structure provides SI-SCQRs with another filtering path for improving and controlling the performances of the dual-band filter such as insertion loss and bandwidth.

The second part, for the design of the wideband filter, a new class of wideband ring-type microstrip bandpass filter is proposed under smaller size of three quarters waveguide length section. One via hole is placed at perpendicular position in a squared ring, whereas two short-circuited sections are formed in the ring-type microstrip bandpass filter similar to a dual-mode ring filter in shape, thereby making up a three quarters waveguide length ring-type microstrip bandpass filter. By adjusting the short-circuited sections, the bandwidth of the center frequency can be controlled easily. As a pair of open-circuited stubs is placed between the two ports, two extra resonances can be used to improve the out-of-band performance.

Third, a broadband bandpass filter (BPF) with superior spurious suppression over a wide frequency range at least up to 20 GHz at -20 dB has been designed. The proposed broadband bandpass filter has designed using quarter-wavelength short stubs alternating with branch stubs co-via structure, and inserting the bandstop filters to substitute for redundant connecting lines. Compare with some traditional co-via structure, this work by using the branch stubs to construct the co-via structure, not only reduce the size around 70% but also decrease the radiation loss due to some complex meander configurations occurring in the connecting lines.

Then, in the fourth part, a novel method for notch implementation in ultra wideband (UWB) bandpass filter (BPF) using open circuited metal lines embedded in a defected ground structure (DGS) is proposed. Distinct from traditional notch implementation, the proposed method uses the additional metal lines with half waveguide length embedded in defected ground structure to produce additional notch band behavior based on the DGS bandpass behavior. Furthermore, the equivalent circuit model of the proposed UWB BPF with notch implementation is established for explaining the circuit behaviors more explicitly.

Finally, a novel method for spurious suppression in bandpass filter using split-mode excitations (SME) is proposed. Distinct from traditional ways for spurious suppression, the proposed method uses the different excitations for six-order quarter-wavelength resonators to obtain good out-of-band performance. Based on the split-mode, the proposed filter adopt three effectively excitations to produce three spurious conditions, furthermore, wideband spurious suppression is proposed.

In this thesis, some novel design for bandpass filters were proposed. Distinct from traditional ways for spurious suppression, this thesis improve some important performances, which included selectivity, wideband, ultra wideband, notch band, and harmonic suppression in compact size.

Abstract (CHINESE) -----------------------------------------------------i
Abstract (ENGLISH) ---------------------------------------------------iii
Contents --------------------------------------------------------------ix
List of Figures -------------------------------------------------------xi
List of Tables --------------------------------------------------------xv
Chapter 1. Introduction ------------------------------------------------1
1-1 Communication Protocols --------------------------------------------2
1-2 IEEE 802 Series Standards ------------------------------------------3
1-3 Transmitter/Receiver Architectures ---------------------------------4
1-4 Overview of the Dissertation ---------------------------------------6
Chapter 2. A New Approach of Dual-Band Filters by Using Stepped Impedance Simplified Cascaded Quadruplet Resonators with Slot Coupling ----------10
2-1 Introduction ------------------------------------------------------10
2-2 Simplified Cascaded Quadruplet Resonators -------------------------11
2-3 Stepped Impedance Simplified Cascaded Quadruplet Resonators -------15
2-4 Summary -----------------------------------------------------------20
Chapter 3. A Miniaturized Wideband Ring-Type Bandpass Filter with Upper Stopband Characteristic Improvement -----------------------------------21
3-1 Introduction ------------------------------------------------------21
3-2 Proposed Wideband Bandpass Filter ---------------------------------22
3-3 Implementation and Experimental Results ---------------------------26
3-4 Summary -----------------------------------------------------------28
3-5 Appendix ----------------------------------------------------------29
Chapter 4. Improved Compact Broadband Bandpass Filter Using Branch Stubs Co-Via Structure with Wide Stopband Characteristic --------------------30
4-1 Introduction-------------------------------------------------------30
4-2 Proposed Broadband Bandpass Filter --------------------------------33
4-3 Implementation and Experimental Results ---------------------------39
4-4 Summary -----------------------------------------------------------40
Chapter 5. Notch Implementation in UWB Filters Using Open Circuited Metal Lines Embedded in Defected Ground Structure ---------------------------42
5-1 Introduction ------------------------------------------------------42
5-2 Design of UWB Bandpass Filter with Notch Band ---------------------43
5-3 Implementation and Experimental Results ---------------------------47
5-4 Summary -----------------------------------------------------------51
Chapter 6. Multi-Suppression of Microstrip Bandpass Filter Using Split Mode Excitations ------------------------------------------------------52
6-1 Introduction-------------------------------------------------------52
6-2 Design of Proposed Bandpass Filter --------------------------------54
6-3 Implementation and Experimental Results ---------------------------59
6-4 Summary -----------------------------------------------------------60
Chapter 7. Conclusions Future Works -----------------------------------62
7-1 Conclusions -------------------------------------------------------62
7-2 Future Works ------------------------------------------------------65
Reference -------------------------------------------------------------66
                                    

[01] P.R. Gray and R.G. Meyer, "Future Directions in Silicon ICs for RF Personal Communications," Proc. IEEE Custom Integrated Circuits Conf. (CICC), pp. 83-90, 1995.
[02] 邱煥凱, "GaAs Microwave Monolithic Integrated Circuit Chip Set Design for 2.4-2.5 GHz ISM Band Front End," 國立台灣大學電機工程研究所博士論文,民國八十六年.
[03] IEEE Std 802.11a/D7.0-1999, "Part11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specification: High-Speed Physical Layer in the 5GHz Band."
[04] ETSI, "Broadband Radio Access Network (BRAN); HIPERLAN type 2 Technical Specification; Physical (PHY) Layer," Aug. 1999.
[05] 鄧友清, "高速無線區域網路時代即將到來," 新通訊第 9 期, 2001 年 11 月號.
[06] E.A. Wolff and R. Kaul, "Microwave Engineering and Systems Applications," 2nd Edition, New York J. Wiley, pp. 605-621, 1988.
[07] L. C. Tsai, and C. W. Hsue, "Dual-band bandpass filters using equal-length coupled serial shunted lines and Z-transform technique," IEEE Trans. Microw. Theory Tech., vol. 52, no. 4, pp. 1111–1117, Apr. 2004.
[08] S. Sun, and L. Zhu, "Compact dual-band microstrip bandpass filter without external feeds," IEEE Microw. Wireless Compon. Lett., vol. 15, no. 10, pp. 644–646, Oct. 2005.
[09] A. S. Liu, T. Y. Huang, and R. B. Wu, "A dual wideband filter design using frequency mapping and stepped-impedance resonators," IEEE Trans. Microw. Theory Tech., vol. 56, no. 12, pp. 2921–2929, Dec. 2008.
[10] C. Y. Chen, and C. Y. Hsu, "A simple and effective method for microstrip dual-band filters design," IEEE Microw. Wireless Compon. Lett., vol. 16, no. 5, pp. 246–248, May. 2006.
[11] 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 Microw. Wireless Compon. Lett., vol. 16, no. 6, pp. 360–362, Jun. 2006.
[12] P. K. Singh, S. Basu, and Y. H. Wang, "Miniature dual-band filter using quarter wavelength stepped impedance resonators," IEEE Microw. Wireless Compon. Lett., vol. 18, no. 2, pp. 88–90, Feb. 2008.
[13] Q. X. Chu, and F. C. Chen, "A compact dual-band bandpass filter using meandering stepped impedance resonators," IEEE Microw. Wireless Compon. Lett., vol. 18, no. 5, pp. 320–322, May. 2008.
[14] B. Wu, C. H. Liang, Q. Li, and P. Y. Qin, "Novel dual-band filter incorporating defected SIR and microstrip SIR," IEEE Microw. Wireless Compon. Lett., vol. 18, no. 6, pp. 392–394, Jun. 2008.
[15] J. T. Kuo and H. S. Cheng, "Design of quasi-elliptic function filters with a dual-passband response," IEEE Microw. Wireless Compon. Lett., vol. 14, no. 10, pp. 472–474, Oct. 2004.
[16] J. S. Hong and M. J. Lancaster, "Microstrip Filters for RF/Microwave Application," Wiley, New York, 2001.
[17] M. Makimoto and S. Yamashita, "Bandpass filters using parallel coupled stripline stepped impedance resonators," IEEE Trans Microw. Theory Tech., vol. MTT-28, no. 12, pp. 1413–1417, Dec. 1980.
[18] "IE3D User’s Manual," Zeland Software, Inc., 2001, Release 8.
[19] P. H. Deng, C. H. Wang, and C. H. Chen, "Novel broadside-coupled bandpass filters using both microstrip and coplanar-waveguide resonators," IEEE Trans. Microw. Theory Tech., vol. 54, no. 10, pp. 3746–3750, Oct. 2006.
[20] T. N. Kuo, S. C. Lin, C. H. Wang, and C. H. Chen, "Compact bandpass filters based on dual plane microstrip and coplanar waveguide structure with quarter wavelength resonators," IEEE Microw. Wireless Compon. Lett., vol. 17, no. 3, pp. 178–180, Mar. 2007.
[21] M. K. Mandal and S. Sanyal, "Compact wide-band bandpass filter using microstrip to slotline broadside-coupling," IEEE Microw. Wireless Compon. Lett., vol. 17, no. 9, pp. 640–642, Sep. 2007.
[22] X. D. Huang and C. H. Cheng, "A novel coplanar-waveguide bandpass filter using a dual-mode square-ring resonator," IEEE Microw. Wireless Compon. Lett., vol. 16, no. 1, pp. 13–15, Jan. 2006.
[23] Y. C. Chiou, J. T. Kuo, and J.-S. Wu, "Miniaturized dual-mode ring resonator bandpass filter with microstrip-to-CPW broadside-coupled structure, " IEEE Microw. Wireless Compon. Lett., vol. 18, no. 2, Feb. 2008.
[24] J. Wang, H. Zhang, L.-X. Ma, and H.-Y. Xu, "Study on two compact cpw-fed bandpass filters using dual-mode patch resonator," Progress In Electromagnetics Research C, vol. 1, pp. 55-61, 2008.
[25] Adam, H., A. Ismail, M.A. Mahdi, M.S. Razalli, A. Alhawari and B.K. Esfeh, "X-band miniaturized wideband bandpass filter utilizing multilayered microstrip hairpin resonator," Progress In Electromagnetics Research, vol. 93, pp. 177-188. 2009.
[26] J. T. Kuo and E. Shih, "Wideband bandpass filter design with three line microstrip structures," Proc. Inst. Elect. Eng., vol. 149, no. 516, pp. 243–247, Oct./Dec. 2002.
[27] A. Görür, "A novel dual-mode bandpass filter with wide stopband using the properties of microstrip open-loop resonator," IEEE Microwave Wireless Compon. Lett., vol. 12, no. 10, pp. 386-388, Oct. 2002.
[28] L. Athukorala, and D. Budimir, "Compact dual-mode open loop microstrip resonators and filters," IEEE Microw. Wireless Compon. Lett., vol. 19, no. 11, pp. 698-700, Nov. 2009.
[29] J. C. Liu, P. C. Lu, C. H. Shie, C. S. Cheng and L. Yao, "Dual-mode double-ring resonators for microstrip band-pass-filter applications," IEE Proc. Microwaves Antennas and propagation, vol. 151, no. 5, pp. 430-434, 2004.
[30] S. Wen and L. Zhu, "Numerical synthesis design of coupled resonator filters," Progress In Electromagnetics Research, vol. 92, pp. 333-346, 2009.
[31] Y.-X. Wang, B.-Z. Wang, and J. P. Wang, "A compact square loop dual-mode bandpass filter with wide stop-band," Progress In Electromagnetics Research, vol. 77, pp. 67-73, 2007.
[32] L. H. Hsieh and K. Chang, "Compact, low insertion-loss, sharp-rejection, and wide-band microstrip bandpass filters," IEEE Trans. Microw. Theory Tech., vol. 51, no. 4, pp. 1241–1246, Apr. 2003.
[33] H. B. EI-Shaarawy, F. Coccetti, R. Plana, M. EI-Said and E. A. Hashish, "Compact bandpass ring resonator filter with enhanced wide-band rejection characteristics using defected ground structures," IEEE Microw. Wireless Compon. Lett., vol. 18, no. 8, pp. 500-503, Aug. 2008.
[34] L. Zhu and K.Wu, "A joint field/circuit model of line-to-ring coupling structures and its application to the design of microstrip dual-mode filters and ring resonator circuits," IEEE Trans. Microw. Theory Tech., vol. 47, no. 10, pp. 1938–1948, Oct. 1999.
[35] J. S. Hong and M. J. Lancaster, "Microstrip bandpass filter using degenerate modes of a novel meander loop resonator," IEEE Microw. Guided Wave Lett., vol. 5, no. 11, pp. 371–372, Nov. 1995.
[36] G. K. Gopalakrishnan and K. Chang, "Novel excitation schemes for the microstrip ring resonator with lower insertion loss," Electron. Lett., vol. 20, no. 2, pp. 148–149, Jan. 1994.
[37] L. H. Hsieh and K. Chang, "Dual-mode quasi-elliptic-function bandpass filters using ring resonators with enhanced-coupling tuning stubs," IEEE Trans. Microw.
Theory Tech., vol. 50, no. 5, pp. 1340–1345, May 2002.
[38] W. C. Jung, H. J. Park, and J. C. Lee, "Microstrip ring bandpass filters with new interdigital side-coupling structure," in Asia–Pacific Microw. Conf., pp. 678–681.Dec. 1999.
[39] Y. C. Chiou, J. T. Kuo, and E. Cheng, "Broadband quasi-Chebyshev bandpass filters with multimode stepped-impedance resonators (SIRs)," IEEE Trans. Microw. Theory Tech., vol. 54, no. 8, pp. 3352–3358, Aug. 2006.
[40] T. N. Kuo, S. C. Lin, C. H. Wang, and C. H. Chen, "New coupling scheme for microstrip bandpass filters with quarter-wavelength resonators," IEEE Trans. Microw. Theory Tech., vol. 56, no. 12, pp. 2930–2935, Dec. 2008.
[41] G. Mattaei, L. Young, and E. M. T. Jones, Microwave Filters, Impedance Matching Networks, and Coupling Structures, Artech House, Norwood, MA, 1980.
[42] S. W. Wong and L. Zhu, "EBG-embedded multiple-mode resonator for UWB bandpass filter with improved upper-stopband performance," IEEE Microw. WirelessCompon. Lett., vol. 17, no. 6, pp. 421–423, Jun. 2007.
[43] P. K. Singh, S. Basu and Y. H. Wang, "Planar ultra-wideband bandpass filter using edge coupled microstrip lines and stepped impedance open stub," IEEE Microw. Wireless Compon. Lett., vol. 17, no. 9, pp. 649–651, Sep. 2007.
[44] L. Zhu, S. Sun, and W. Menzel, "Ultra-wideband (UWB) bandpass filters using multiple-mode resonator," IEEE Microw. Wireless Compon. Lett., vol. 15, no. 11, pp. 796–798, Nov. 2005.
[45] H. Chen and Y.-X. Zhang, "A novel and compact UWB bandpass filter using microstrip fork-form resonators," Progress In Electromagnetics Research, vol. 77, pp. 273–280, 2007.
[46] J.-K. Xiao and Q.-X. Chu, "Novel microstrip triangular resonator bandpass filter with transmission zeros and wide bands using fractal-shaped defection," Progress In Electromagnetics Research, vol. 77, pp. 343–356, 2007.
[47] H. Shaman, and J. S. Hong, "An optimum ultra-wideband (UWB) bandpass filter with spurious response suppression," in Proc. IEEE Conf. Wireless and Microwave Technology Conference, pp. 1–5, Dec. 2006.
[48] C. W. Tang, and M. G. Chen, "A microstrip ultra-wideband bandpass filter with cascaded broadband bandpass and bandstop filters," IEEE Trans. Microw. Theory Tech., vol. 55, no. 11, pp. 2412–2417, Nov. 2007.
[[49] G. M. Yang, R. Jin, J. Geng, X. Huang and G. Xiao, "Ultra-wideband bandpass filter with hybrid quasi-lumped elements and defected ground structure," IET Microwaves, Antennas & Propagation, vol. 1, pp. 733-736, Jun. 2007.
[50] H. N. Shaman, and J. S. Hong, "A compact ultra-wideband (UWB) bandpass filter with transmission zero," European Microwave Conference, pp. 603–605, Sep. 2006.
[51] W. T. Wong, Y. S. Lin, C. H. Wang, and C. H. Chen, "Highly selective microstrip bandpass filters for ultra-wideband (UWB) applications," in Proc. Asia-Pacific Microw. Conf., pp. 1–4, Dec. 2005.
[52] D. M. Pozar, Microwave Engineering, Wiley, New York, 1998.
[53] J. Zhang, B. Cui, S. Lin, and X.-W. Sun, "Sharp-rejection low-pass filter with controllable transmission zero using complementary split ring resonators (CSRRS)," Progress In Electromagnetics Research, vol. 69, pp. 219–226, 2007.
[54] J. Chen, Z.-B. Weng, Y.-C. Jiao, and F.-S. Zhang, "Lowpass filter design of Hilbert curve ring defected ground structure," Progress In Electromagnetics Research, vol. 70, pp. 269–280, 2007.
[55] S. Mahdi Moghadasi, "Compact and wideband 1-D mushroom-like EBG filters," Progress In Electromagnetics Research, vol. 83, pp. 323–333, 2008.
[56] Han S. H., Wang X. L., and Fan Y., "Analysis and design of multiple-band bandstop filters," Progress In Electromagnetics Research, vol. 70, pp. 297–306, 2007.
[57] "First report and order in the matter of revision of part 15 of the commission's rules regarding ultra-wideband transmission systems," Federal Communications Commission ET-Docket, pp. 98-153, 2002.
[58] W. Menzel, and P. Feil, "Ultra-wideband (UWB) filter with WLAN notch," in Proc. 36th European Microwave Conf., pp. 595–598, Sep. 2006.
[59] C. Y. Hsu, L. K. Yeh, C. Y. Chen and H. R. Chuang, "A 3-10 GHz ultra-wideband bandpass filter with 5-6 GHz rejection band," in Proc. Asia-Pacific Microw. Conf., pp.1–4, Dec. 2007.
[60] H. Shaman, and J. S. Hong, "Ultra-wideband (UWB) bandpass filter with embedded band notch structures," IEEE Microw. Wireless Compon. Lett., vol. 17, no.3, pp. 193–195, Mar. 2007.
[61] G. M. Yang, R. Jin, C. Vittoria, V. G. Harris, and N. X. Sun, "Small ultra-wideband (UWB) bandpass filter with notched band," IEEE Microw. Wireless Compon. Lett., vol. 18, no. 3, pp. 176–178, Mar. 2008.
[62] H. Shaman, and J. S. Hong, "Asymmetric parallel-coupled lines for notch implementation in UWB filter," IEEE Microw. Wireless Compon. Lett., vol. 17, no. 7, pp. 516–518, Mar. 2007.
[63] A. Ali, and Z. Hu, "Metamaterial resonator based wave propagation notch for ultra wideband filter applications," IEEE Antennas Wireless Propag. Lett., vol. 7, pp. 210–212, Feb. 2008.
[64] P.-Y. Hsiao and R.-M. Weng, "Compact open-loop UWB filter with notched band," Progress In Electromagnetics Research Letters, vol. 7, pp. 149-159, 2009.
[65] J. S. Parkt, J. H. Kimt, J. H. Leet, S. H. Kimt, and S. H. Myungtt, "A Novel Equivalent Circuit and Modeling Method for Defected Ground Structure and Its Application to Optimization of a DGS Lowpass Filter," in IEEE MTT-S Int. Micro. Symp. Dig., pp. 417–420, Jun. 2002.
[66] M. Shobeyri and M. H. Vadjed-Samiei, "Compact ultra-wideband bandpass filter with defected ground structure," Progress In Electromagnetics Research Letters, vol. 4, pp. 25-31, 2008.
[67] X.-Q. Chen, L. H. Weng, Y.-C. Guo, and X.-W. Shi, "RF circuit design integrated with microstrip DGS," Progress In Electromagnetics Research M, vol. 3, pp. 141-152, 2008.
[68] J. An, G.-M. Wang, W.-D. Zeng, and L.-X. Ma, "UWB filter using defected ground structure of Von Koch fractal shape slot," Progress In Electromagnetics Research Letters, vol. 6, pp. 61-66, 2009.
[69] A. S. S. Mohra, "Compact lowpass filter with sharp transition band based on defected ground structures," Progress In Electromagnetics Research Letters, vol. 8, pp. 83-92, 2009.
[70] F. Wei, L. Chen, X.-W. Shi, X. H. Wang, and Q. Huang, "Compact UWB bandpass filter with notched band," Progress In Electromagnetics Research M, vol. 4, pp. 121-128, 2008.
[71] X.-Q. Chen, R. Li, S.-J. Shi, Q. Wang, L. Xu, and X.-W. Shi, "A novel low pass filter using elliptic shape defected ground structure," Progress In Electromagnetics Research M, vol. 9, pp. 117-126, 2008.
[72] J. S. Yoon, J. G. Kim, J. S. Park, C. S. Park, J. B. Lim, and H. G. Cho, "A new DGS resonator and its application to bandpass filter design," in IEEE MTT-S Int. Micro. Symp. Dig., pp. 1605–1608, Jun. 2004.
[73] G.-L. Wu, W. Mu, X.-W. Dai, and Y.-C. Jiao, "Design of novel dual-band bandpass filter with microstrip meander-loop resonator and CSRR DGS," Progress In Electromagnetics Research, vol. 78, pp. 17–24, 2008.
[74] J.-C. Liu, H.-C. Lin, and B.-H. Zeng, "Complementary split ring resonators with dual mesh-shaped couplings and defected ground structures for wide pass-band and stop-band BPF design," Progress In Electromagnetics Research Letters, vol. 10, pp. 19-28, 2009.
[75] N. Thomson, and J. S. Hong, "Compact Ultra-Wideband Microstrip/Coplanar Waveguide Bandpass Filter," IEEE Microw. Wireless Compon. Lett., vol. 17, no. 3, pp. 184–186, Mar. 2007.
[76] W. H. Tu, and K. Chang, "Compact microstrip bandstop filter using open stub and spur-line," IEEE Microw. Wireless Compon. Lett., vol. 15, no. 4, pp. 268-270, Apr. 2005.
[77] W. H. Tu, and K. Chang, "Compact second harmonic-suppressed bandstop and bandpass filters using open stubs," IEEE Trans. Microw. Theory Tech., vol. 54, no. 6, pp. 2497-2502, Jun. 2006.
[78] S. Fallahzadeh and M. Tayarani, "A compact microstrip bandstop filter," Progress In Electromagnetics Research Letters, vol. 11, pp. 167-172, 2009.
[79] C. W. Tang, and H. H. Liang, "Parallel-coupled stacked SIRs bandpass filters with open-loop resonators for suppression of spurious responses," IEEE Microw. Wireless Compon. Lett., vol. 15, no. 11, pp. 802-804, Nov. 2005.
[80] J. García-García, F. Martín, and R. Marqués, "Microwave filters with improved stopband based on sub-wavelength resonators," IEEE Trans. Microw. Theory Tech., vol. 53, no. 6, pp. 1997-2006, Jun. 2005.
[81] Y. Peng, and W. X. Zhang, "Microstrip band-reject filter based on inter-digital capacitance loaded loop resonators," Progress In Electromagnetics Research Letters, vol. 8, pp. 93-103, 2009.
[82] M. Sagawa, M. Makimoto, and S. Yamashita, "Geometrical structures and fundamental characteristics of microwave stepped-impedance resonators," IEEE Trans. Microw. Theory Tech., vol. 45, no. 7, pp. 1078–1085, Jul. 1997.
[83] K. F. Chang, and K. W. Tam, "Miniaturized cross-coupled filter with second and third spurious responses suppression," IEEE Microw. Wireless Compon. Lett., vol. 15, no. 2, pp. 122-124, Feb. 2005.
[84] T. N. Kuo, W. C. Li, C. H. Wang, and C. H. Chen, "Wide-stopband microstrip bandpass filters using quarter-wavelength stepped impedance resonators and bandstop embedded resonators," IEEE Microw. Wireless Compon. Lett., vol. 18, no. 6, pp. 389-391, Jun. 2008.
[85] W. J. Lin, J. Y. Li, D. B. Lin, L. S. Chen, and M. P. Houng, "Improved compact broadband bandpass filter using stubs co-via structure with wide stopband characteristic," Progress In Electromagnetics Research C, vol. 5, pp. 45-55, 2008.
[86] T. Lopetegi, A. G. Laso, and M. Guglielmi, "New microstrip "Wiggly-line" filters with spurious passband suppression," IEEE Trans. Microw. Theory Tech., vol. 49, no. 9, pp. 1593-1598, Sep. 2001.
[87] J. T. Kuo, W. H. Hsu, and W. T. Huang, "Parallel coupled microstrip filters with suppression of harmonic response," IEEE Microw. Wireless Compon. Lett., vol. 12, no. 10, pp. 383-385, Oct. 2002.
[88] W. L. Chen, and G. M. Wang, "Effective design of novel compact fractal-shaped microstrip coupled-line bandpass filters for suppression of the second harmonic," IEEE Microw. Wireless Compon. Lett., vol. 19, no. 2, pp. 74-76, Feb. 2009.
[89] M. Moradian and M. Tayarani, "Spurious-response suppression in microstrip parallel coupled bandpass filters by grooved substrates," IEEE Trans. Microw. Theory Tech., vol. 56, no. 7, pp. 1707-1713, Jul. 2008.
[90] D. J. Woo, T. K. Lee, J. W. Lee, C. S. Pyo, W. K. Choi, "Novel U-slot and V-slot DGSs for bandstop filter with improved Q factor," IEEE Trans. Microw. Theory Tech., vol. 54, no. 6, pp. 2840-2847, Jun. 2006.
[91] W. Xue, C. H. Liang, X. W. Dai, and J. W. Fan, "Design of miniature planar dual-band filter with 0° feed structures," Progress In Electromagnetics Research, vol. 77, pp. 493-499, 2007.
[92] S. Y. Lee, and C. M. Tsai, "New cross-coupled filter design using improved hairpin resonators," IEEE Trans. Microw. Theory Tech., vol. 48, no. 12, pp. 2482-2490, Dec. 2000.
[93] C. F. Chen, T. Y. Huang, and R. B. Wu, "Design of microstrip bandpass filters with multiorder spurious-mode suppression," IEEE Trans. Microw. Theory Tech., vol. 53, no. 12, pp. 3788-3793, Dec. 2005.
[94] S. C. Lin, P. H. Deng, Y. S. Lin, and C. H. Chen, "Extended-stopband bandpass filter using both half- and quarter-wavelength resonators," IEEE Trans. Microw. Theory Tech., vol. 16, no. 1, pp. 43-45, Jan. 2006.

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