臺灣博碩士論文加值系統

於設計具衰減極點的交叉耦合非對稱帶通濾波器時，中心頻率、3dB頻寬、通帶區內之植入損失與折返損失以及截止區內的衰減極點之頻率等皆為重要之考量依據。於本論文中，我們利用凹折型開迴路諧振器來設計具衰減極點的交叉耦合非對稱帶通濾波器。

於本論文中，首先探討具衰減極點交叉耦合非對稱帶通濾波器之設計理論。其次，分別設計與製作衰減極點位於高頻處及低頻處的交叉耦合非對稱帶通濾波器。最後，量測濾波器之特性，並將量測結果與模擬數值做比較。

In the design of the cross-coupled asymmetrical bandpass filter with attenuation pole, the center frequency, the 3dB bandwidth, the insertion and return losses in the passband, and the frequency of attenuation pole in the stopband are the important parameters to be considered. In this thesis, the folded open-loop resonators are used to design the cross-coupled asymmetrical bandpass filters with attenuation poles.

In this thesis, the design theory of the cross-coupled asymmetrical bandpass filter with attenuation pole is analyzed firstly. Next, the cross-coupled asymmetrical bandpass filters with an attenuation pole above and below the passband are designed and realized, respectively. Finally, the characteristics of these two filters are measured and compared with the simulation results.

目 錄
第一章 緒論…………………………………………………………1
1-1 研究動機………………………………………………………1
1-2 文獻探討………………………………………………………2
1-3 內容概要………………………………………………………3

第二章 具衰減極點交叉耦合非對稱帶通濾波器之理論分析……4
2-1 簡介……………………………………………………………4
2-2 準TEM傳輸線…………………………………………………4
2-3 集總式濾波器…………………………………………………6
2-3.1 濾波器的種類…………………………………………………6
2-3.2 設計方法………………………………………………………7
2-4 分散式帶通濾波器……………………………………………13
2-4.1 半波長微帶線諧振器…………………………………………13
2-4.2 諧振器間之耦合係數…………………………………………13
2-4.3 耦合模型之建立………………………………………………17
2-4.4 輸入端與輸出端分接埠之位置………………………………18
2-4.5 衰減極點的分析………………………………………………19

第三章 具衰減極點交叉耦合非對稱帶通濾波器之設計與模擬…34

3-1 簡介…………………………………………………………34
3-2 低通濾波器之原型電路……………………………………34
3-3 半波長諧振器………………………………………………39
3-4 建立耦合模型………………………………………………41
3-5 帶通濾波器之設計…………………………………………42
3-5.1 衰減極點位於高頻處………………………………………42
3-5.2 衰減極點位於低頻處………………………………………44
3-6 電腦輔助模擬………………………………………………45
3-6.1 衰減極點位於高頻處………………………………………45
3-6.2 衰減極點位於低頻處………………………………………47

第四章 具衰減極點交叉耦合非對稱帶通濾波器之特性量測…73
4-1 簡介…………………………………………………………73
4-2 電路佈局與量測步驟………………………………………73
4-3 量測結果……………………………………………………74
4-3.1 衰減極點位於高頻處………………………………………74
4-3.2 衰減極點位於低頻處………………………………………75
4-4 結果與討論…………………………………………………75

第五章 結論………………………………………………………88

參考文獻………………………………………………………………90

參 考 文 獻

[1] G. L. Matthaei, L. Young, and E. M. T. Jones, “Microwave Filters, Impedance-Matching Networks, and Coupling Structures,” Artech House, 1980.
[2] J. R. Montejo-Garai, “Synthesis of Physically Asymmetrical N-Trisection Filters with Transmission Zeros at N Different Real Frequencies,” Electronics Letters, Vol. 35, Feb. 1999, pp. 226-227.
[3] J. G. Hong and M. J. Lancaster, Microstrip Filters For RF/Microwave Applications, John Wiley & Sons, 2001.
[4] R. Levy and S. B. Cohn, “A History of Microwave Filter Research, Design, and Development,” IEEE Trans. Microwave Theory Tech., Vol. MTT-32, Sept. 1984, pp. 1055-1067.
[5] R. Levy, “Filters with Single Transmission Zeros at Real or Imaginary Frequencies,” IEEE Trans. Microwave Theory Tech., Vol. MTT-24, April 1976, pp. 172-181.
[6] K. T. Jokela, “Narrow-Band Stripline or Microstrip Filters with Transmission Zeros at Real or Imaginary Frequencies,” IEEE Trans. Microwave Theory Tech., Vol. MTT-28, June 1980, pp. 542-547.
[7] J. D. Rhodes and R. J. Cameron, “General Extracted Pole Synthesis Technique with Applications to Low-Loss TE011 Mode Filters,” IEEE Trans. Microwave Theory Tech., Vol. MTT-28, Sept. 1980, pp. 1018-1028.
[8] R. J. Cameron, “Fast Generation of Chebyshev Filters Prototypes with Asymmetrical Prescribed Transmission Zeros,” ESA J., Vol. 6, 1982, pp. 83-95.
[9] D. S. G. Chambers and J. D. Rhodes, “A Low-Pass Prototype Network Allowing the Placing of Integrated Poles at Real Frequencies,” IEEE Trans. Microwave Theory Tech., Vol. MTT-31, Jan. 1983, pp. 40-45.
[10] D. Siu, “Realization of an Exact 5-pole Elliptic Function Employing Dielectric Loaded Triple-Dual-Mode Cavity Structure,” IEEE MTT-S Digest, 1986, pp. 357-359.
[11] P. L. Field and I. C. Hunter, “Asymmetric Bandpass Filter Using a Novel Microstrip Circuit,” IEEE Microwave and Guided Wave Letters,” Vol. 2, No. 6, June 1992, pp. 247-249.
[12] U. Karacaoglu, I. D. Robertson, and M. Guglielmi, “A Dual-Mode Microstrip Ring Resonator Filter with Active Devices for Loss Compensation,” IEEE MTT-S Digest, 1993, pp. 189-192.
[13] R. Levy, “Synthesis of General Asymmetric Singly- and Doubly-Terminated Cross-Coupled Filters,” IEEE Trans. Microwave Theory Tech., Vol. MTT-42, Dec. 1994, pp. 2468-2471.
[14] K. K. M. Cheng, “Design of Dual-Mode Ring Resonators with Transmission Zeros,” Electronics Letters, Vol. 33, No. 16, July 1997, pp. 1392-1393.
[15] C. C. Yang and C. Y. Chang, “Micorstrip Cascade Trisection Filters,” IEEE Microwave and Guided Wave Letters, Vol. 9, July 1999, pp. 271-273.
[16] C. M. Tasi and S. Y. Lee, “New Cross-Coupled Filter Design Using Improved Hairpin Resonators,” IEEE Trans. Microwave Theory Tech., Vol. MTT-48, Dec. 2000, pp. 2482-2490.
[17] B. C. Min, Y. H. Choi, and B. Oh, “Cross-Coupled Bandpass Filter using HTS Microstrip Resonators,” IEEE Transactions On Applied Superconductivity, Vol. 11, No. 1, March 2001, pp. 485-488.
[18] J. T. Kuo and E. Shin, “Stepped Impedance Resonator Bandpass Filters with Tunable Transmission Zeros and Its Application to Wide Stopband Design,” IEEE MTT-S Digest, 2002, pp. 1613-1616.
[19] C. M. Tasi, S. Y. Lee, C. C. Chuang, and C. C. Tasi, “A Folded Coupled-Line Structure and Its Application to Filter and Diplexer Design,” IEEE MTT-S Digest, 2002, pp. 1927-1930.
[20] K. Chang and L. H. Hsieh, “Tunable Microstrip Bandpass Filters with Two Transmission Zeros,” IEEE Trans. Microwave Theory Tech., Vol. MTT-51, Feb. 2003, pp. 520-525.
[21] C. Jianxin, Y. Mengxia, X. Jun, and X. Quan, ”Compact Microstrip Bandpass Filter with Two Transmission Zeros,” Electronics Letters, Vol. 40, March 2004, pp. 311-313.
[22] K. C. Gupta, R. Garg, I. Bahl, and P. Bhartia, Microstrip Lines and Slotlines, Artech House, 1996.
[23] T. C. Edward, Foundations for Microstrip Circuit Design, John Wiley & Sons, 1992.
[24] K. Chang, Microwave Solid-State Circuit and Applications, John Wiley & Sons, 1993.
[25] E. H. Fooks and R. A. Zakarevicius, Microwave Engineering Using Microstrip Circuits, Prentice Hall, 1990.
[26] S. Winder, Filter Design, Oxford, Boston, 1997.
[27] R. J. Cameron, “General Coupling Matrix Synthesis Methods for Chebyshev Filtering Functions,” IEEE Trans. Microwave Theory Tech., Vol. MTT-47, April 1999, pp. 433-442.
[28] R. J. Cameron, “Fast Generation of Chebyshev Filter Prototypes with Asymmetrically-Prescribed Transmission zeros,” ESA J., Vol. 6, 1982, pp. 83-95.
[29] J. D. Rhodes and A. S. Alseyab, “The Generalized Cheyshev Low Pass Prototype Filter,” Int. J. Circuit Theory Applicat., Vol. 8, 1980, pp. 113-125.
[30] D. M. Pozar, Microwave Engineering, Addison-Wesley, New York, 1990.
[31] R. N. Martins and H. A. Jr., “Techniques Yield Tiny Hairpin-Line Resonator Filter,” Microwaves & RF, Nov. 1999, pp. 142-149.
[32] J. S. Hong and M. J. Lancaster, “Microstrip Cross-Coupled Trisection Bandpass Filters with Asymmetric Frequency Characteristics,” IEE Proc. Microwave Antenna Propag., Vol. 146, Feb. 1999, pp. 84-90.
[33] 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. MTT-44, Nov. 1996, pp. 2099-2109.
[34] J. S. Hong, “Couplings of Asynchronously Tuned Coupled Microwave Resonators,” IEE Proc. Microwave Antennas Propag., Vol. 147, No. 5, Oct. 2000. pp. 354-358.
[35] J. S. Wong, “Microstrip Tapped-Line Filter Design,” IEEE Trans. Microwave Theory Tech., Vol. MTT-27, Jan. 1979, pp. 44-50.