臺灣博碩士論文加值系統

Three types of novel bandpass filter are presented in this study. The first type is a new ultra wideband (UWB) bandpass filter (BPF) with dual-notched bands (at 5.2 / 5.7 GHz) using the stub-loaded rectangular ring multi-mode resonator (MMR). The proposed resonator consists of the dual embedded open-circuited stubs for introducing the dual notch bands and connected with a stub-loaded rectangular ring structure for controlling the two transmission zeros (at 3 / 11 GHz) at both sides of the UWB passband edge.
The second type is a new ultra wideband (UWB) bandpass filter (BPF) with a notch band at 5.8 GHz using multi-mode stub-loaded resonator (SLR) is presented. The very sharp roll-off UWB characteristics of the proposed filter can be easily obtained by using the SLR. The multi-mode stub-loaded resonator consists of two propagation paths with λ/4 open-circuited stubs for providing the two transmission zeros at lower and upper passband edge. The notch band at 5.8 GHz can be well determined by tuning the structural parameters of the asymmetric interdigital coupled input/output (I/O) lines. This study mainly provides a simple method to design the high passband selectivity UWB filter with notch band for Federal Communications Commission (FCC-defined) indoor UWB specification.
Finally, a multi-layered dual-band bandpass filter using stub-loaded stepped-impedance and uniform-impedance resonators is proposed. The filter is designed to have dual-passband at 2.4, and 5.2 GHz for Wireless Local Area Network(WLAN). The multi-layered filter consists of the stub-loaded stepped-impedance resonator (SL-SIR) on the top layer and the stub-loaded uniform-impedance resonator (SL-UIR) on the bottom layer, that can provide the multi-path propagation to enhance the filter performance and compact circuit size. The proposed SL-SIR and SL-UIR play important roles for controlling the transmission zeros at each first and second passband edges.

Abstract i
誌 謝 iii
Contents iv
Figure Contents vii
Chapter 1 Introduction 1
1.1 Review of Ultra Wideband Bandpass Filters 2
1.2 Review of Multiband Bandpass Filters 9
1.3 Outline of the Thesis 16
Chapter 2 Transmission Line Theory 18
2.1 Basic theory of microwave filters 19
2.2 General the Theory of Couplings 23
2.2.1 Synchronously Tuned Coupled-Resonator Circuits 25
2.3 Selective Filters with a Single Pair of Transmission Zeros 34
2.4 Introduction of Stepped Impedance Resonator 35
Chapter 3 Ultra wideband bandpass filter with dual-notched bands using stub-loaded rectangular ring multi-mode resonator 37
3.1 Introduction 37
3.2 Filter design 39
3.3 Results 50
Chapter 4 Ultra-wideband bandpass filter with a notch band using multi-mode stub loaded resonator 53
4.1 Introduction 53
4.2 Circuit design 54
4.3 Results 60
Chapter 5 Multi-Layered Dual-Band Bandpass Filter Using Stub-Loaded Stepped-Impedance and Uniform-Impedance Resonators 63
5.1 Introduction 63
5-2 Proposed dual-band bandpass filter 65
5.3 Results 74
Chapter 6 Conclusion and Future Work 76
Reference 78

[1] V. Radisic, Y. Qian, R. Coccioli, and T. Itoh, “Novel 2-D Photonic Bandgap Structure for Microstrip Lines,” IEEE Microwave and Guided Wave Letters, vol. 8, no. 2, pp. 69-71, Feb. 1998.

[2] 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.

[3] 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.

[4] R. Li, and L. Zhu, “Compact UWB Bandpass Filter Using Stub-Loaded Multiple-Mode Resonator,” IEEE Microw. Wireless Compon. Lett., vol. 17, no. 1, pp. 40–42, Jan. 2007.

[5] 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.

[6] M. H. Weng, C. T. Liauh, H. W. Wu, and S. R. Vargas “An Ultra-Wideband Bandpass Filter with an Embedded Open-Circuited Stub Structure to Improve In-Band Performance,” IEEE Microw. Wireless Compon. Lett., vol. 19, no. 3, pp. 146–148, Mar. 2009.

[7] S. Sun and L. Zhu, “Compact Dual-Band Microstrip Bandpass Filter without External Feeds,” IEEE Microw. Wireless Compon. Lett., vol. 15, no. 10, pp. 847–849, Oct. 2005.

[8] M. H. Weng, C. Y. Huang, H. W. Wu, K. Shu, and Y. K. Sua “Compact Dual-band Bandpass Filter with Enhanced Feed Coupling Structures,” Microw. Opt. Technol. Lett., vol. 49, no. 1, pp. 171-173, Jan. 2007.

[9] C. F. Chen, T. Y. Huang, and R. B. Wu, “Design of Dual- and Triple-passband Filters Using Alternately Cascaded Multiband Resonators,” IEEE Trans. Microw. Theory Tech., vol. 54, no. 9, pp. 3550–3558, Sep. 2006.

[10] M. H. Weng, Y. C. Chang, H. W. Wu, and C. Y. Huang, “Design of Multilayered Dual-band Bandpass Filter Using Cross-coupled Stepped Impedance Resonators,” Microw. Opt. Technol. Lett., vol. 49, no. 11, pp. 2713-2717, Nov. 2007.

[11] M. H. Weng, H. W. Wu, and Y. K. Sua, “Compact and Low Loss Dual-band Bandpass Filter Using Pseudo-interdigital Stepped Impedance Resonators for WLANs,” IEEE Microw. Wireless Compon. Lett., vol. 17, no. 3, pp. 187–189, Mar. 2007.

[12] D. M. Pozar, Microwave Engineering, Second Edition. John Wiley & Sons, Inc., 1998.

[13] G. L. Matthaei, L. Young, E. M. T. Jone, Microwave Filters, Impedance-maching Networks and Coupling Strustures, New York, McGraw Hill, 1964.

[14] H. Miyake, S. Kitazawa, T. Ishizaki, T. Yamada, and Y. Nagatomi, “A Miniaturized Monolithic Dual-band Filter Using Ceramic Lamination Technique for Dual-mode Portable Telephones,” in IEEE MTT-S Int. Microw. Symp. Dig., vol. 2, pp. 789–792. 1997.

[15] Revision of Part 15 of the Commission’s Rules Regarding Ultra-Wideband Transmission Systems, First Note and Order Federal Communications Commission, ET-Docket (2002) 98-153.

[16] X. H. Wu, Q. X. Chu, X. K. Tian, X. Quyang, “Quintuple-mode UWB Bandpass Filter with Sharp Roll-off and Super-wide Upper Stopband,” IEEE Microw. Wireless Compon. Lett. vol. 21, no. 12, pp. 661–663, Dec. 2011.

[17] W. Liu, Z. Ma, C. P. Chen, G. Zheng, “A Novel Ultra Wideband Bandpass Filter Using Microstrip Double-ring Resonator,“ IEEE Trans. Microw. Theory Tech., vol. 49, no. 2, pp. 303–305, Feb. 2007.

[18] Q. X. Chu, X. K. Tian, “Design of UWB Bandpass Filter Using Stepped-impedance Stub-loaded Resonator,” IEEE Microw. Wireless Compon. Lett. vol. 20, no. 9, pp. 501–503, Sept. 2010.

[19] M. H. Weng, C. T. Liauh, H. W. Wu, S. R. Vargas, “An Ultra-Wideband Bandpass Filter With an Embedded Open-circuited stub Structure to Improve in-band Performance,” IEEE Microw. Wireless Compon. Lett. vol. 19, no. 3, pp. 146–148, Mar. 2009.

[20] Z. C. Hao, J. S. Hong, “Ultra-wideband bandpass Filter with Multiple Notch bands Using Nonuniform Periodical Slotted Ground Structure,” IEEE Trans. Microw. Theory Tech., vol. 57, no. 12, pp. 3080–3088, Dec. 2009.

[21] K. Song, Q. Xue, “Compact Ultra-Wideband (UWB) Bandpass Filter With Multiple Notch bands,” IEEE Microw. Wireless Compon. Lett. vol. 20, no. 8, pp. 447–449, Aug. 2010.

[22] F. Wei, Q. Y. Wu, X. W. Shi, L. Chen, “Compact UWB Bandpass Filter With Dual Notch bands Based on SCRLH Resonator,” IEEE Microw. Wireless Compon. Lett. vol. 21, no. 1, pp. 28–30, Jan. 2011.

[23] J. Q. Huang, Q. X. Chu, C. Y. Liu, “Compact UWB Filter Based on Surface-coupled Structure with Dual Notched bands,” Progress In Electromagnetics Research. vol. 106, pp. 311–319, 2010.

[24] S. Sun, L. Zhu, “Capacitive-ended Interdigital Coupled lines for UWB Bandpass Filters With Improved Out-of-band Performances,” IEEE Microw. Wireless Compon. Lett. vol. 16, no. 8, pp. 440–442, Aug. 2006.

[25] D. M. Pozar, Microwave Engineering, 2nd ed. NewYork: Wiley, 1998.

[26] G. M. Yang, R. Jin, C. Vittoria, V. G. Harris, N. X. Sun, “Small Ultra-Wideband (UWB) Bandpass Filter with Notch band,” IEEE Microw. Wireless Compon. Lett. vol. 18, no. 3, pp. 176–178, Mar. 2008.

[27] K. C. Gupta, R. Garg, I. Bahl, P. Bhartia, “Microstrip Lines and Slotlines,” 2nd Edition, Artech House, 1996.

[28] IE3D Simulator, Zeland Software, Inc, 2002.

[29] J. S. Hong, “Microstrip Filters for RF/Microwave Application,” 2nd Edition, New York: Wiley, 2011.

[30] K. Ma, K. S. Yeo, J. Ma, M. A. Do, “An Ultra-Compact Hairpin Band pass Filter with Additional Zero Points,” IEEE Microw. Wireless Compon. Lett. vol. 17, no. 4, pp. 262–264, Apr. 2007.

[31] K. S. Chin, Y. C. Chiang, J. T. Kuo, “Microstrip Open-loop Resonator With Multispurious Suppression,” IEEE Microw. Wireless Compon. Lett. vol. 17, no. 8, pp. 574–576, Aug. 2007.

[32] C. L. Hsu, F. C. Hsu and J.-T. Kuo, “Microstrip Bandpass Flters for Ultra-Wideband (UWB) Wireless Communications,” IEEE Trans. Microw. Theory Tech., pp. 679–682, June 2005.

[33] W. Menzel, M. S. Tito and L. Zhu, “Low-loss Ultra-Wideband (UWB) Filters Using Suspended Stripline,” in Proc. Asia-Pacific Microw. Conf., vol. 4, pp. 2148–2151, Dec. 2005.

[34] J. S. Park, J. S. Yun and D. Ahn, “A Design of the Novel Coupled-line Bandpass Filter Using Defected Ground Structure With Wide Stopband Performance,” IEEE Trans. Microw. Theory Tech., vol. 50, no. 9, pp. 2037–2043, Sep. 2002.

[35] H. Wang, L. Zhu and W. Menzel, “Ultra-Wideband (UWB) Bandpass Filters With Hybrid Microstrip/CPW Structure,” IEEE Microw. Wireless Compon. Lett., vol. 15, no. 12, pp. 844–846, Dec. 2005.

[36] T. Duong, H. and I. S. Kim, “Steeply Sloped UWB Bandpass Filter Based on Stub-loaded Resonator,” IEEE Microw. Wireless Compon. Lett., vol. 20, no. 8, pp. 441–443, Aug. 2010.

[37] S. W. Wong and L. Zhu, “Implementation of Compact UWB Bandpass Filter With a Notch-band”, IEEE Microw. Wireless Compon. Lett., vol. 18, no. 1, pp. 10–12, Jan. 2008.

[38] C. H. Tseng and H. Y. Shao, “A New Dual-band Microstrip Bandpass Filter Using Net-type Resonators,” IEEE Microw.Wireless Compon. Lett., vol. 20, no. 4, pp. 196–198, Apr. 2010.

[39] P. H. Deng and J. H. Jheng,“A Switched Reconfigurable High Isolation Dual-band Bandpass Filter,” IEEE Microw.Wireless Compon. Lett., vol. 21, no. 2, pp. 71–73, Feb. 2011.

[40] W. S. Chang and C. Y. Chang, “Analytical Design of Microstrip Short Circuit Terminated Stepped-impedance Resonator Dual-Band Filter,” IEEE Trans. Microw. Theory Tech., vol. 59, no. 7, pp. 1730–1739, Jul. 2011.

[41] F. C. Chen and Q. X. Chu, “Novel Multistub Loaded Resonator and its Application to High-order Dual-band Filters,” IEEE Trans. Microw. Theory Tech., vol. 58, no. 6, pp. 1551–1556, Jun. 2010.

[42] C. W. Tang and H. C. Hsu, “Development of Multilayered Bandpass Filters With Multiple Transmission Zeros Using Open-stub/Short-stub/Serial Semilumped Resonators,” IEEE Trans. Microw. Theory Tech., vol. 58, no. 3, pp. 624–634, Mar. 2010.

[43] L. Zhu and W. Menzel, “Compact Microstrip Bandpass Filter With two Transmission Zeros Using a Stub-tapped Half-Wavelength Line Resonator, IEEE Microw. Wireless Compon. Lett., vol. 13, no. 1, pp. 16–18, Jan. 2003.

[44] C. F. Chen, T. Y. Huang, and R. B. Wu, “Design of Dual- and Triple-passband Filters Using Alternately Cascaded Multiband Resonators,” IEEE Trans. Microw. Theory Tech., vol. 54, no. 9, pp. 3550–3558, Sep. 2006.

[45] M. Makimoto and S. Yamashita, “Bandpass Filters Using Parallel Coupled Stripline Stepped Impedance Resonators,” IEEE Trans. Microw. Theory Tech., vol. 28, no. 12, pp. 1413–1417, Dec. 1980.