臺灣博碩士論文加值系統

本論文主要在利用平行式的方法，以及步階阻抗諧振器雙頻帶的特性，設計一種多頻帶帶通濾波器。此多頻帶濾波器工作於1.76~1.84 GHz (GSM 1.8GHz)、2.4~2.4835 GHz (IEEE 802.11b/g)、5.15~5.25 GHz (IEEE 802.11a)、3.4~3.53 GHz (WiMax 3.5GHz)以及5.85~5.925 GHz (Dedicated Short Range Communications, DSRC) 等五個頻帶，經實作與量測所得到之結果為：在第一頻帶1.765~1.788 GHz其S11 < 7.5 dB、S21 > 10.4 dB，在第二頻帶2.462~2.534 GHz其S11 < 19.83 dB、S21 > 9 dB，在第三頻帶3.381~3.467 GHz其S11 < 14.2 dB、S21 > 7.4 dB，在第四頻帶5.084~5.159 GHz其S11 < 8.6 dB、S21 > 8.9 dB，在第五頻帶5.7~5.845 GHz其S11 < 7.6 dB、S21 > 8.44 dB，驗證了此方法之可行性。

In this thesis a multi-band filter design using a new parallel-way method with step-impedance resonators (SIR) is presented for multi-mode wireless communications applications. The multi-band filter includes 1.76~1.84 GHz (GSM 1.8 GHz), 2.4~2.4835 GHz (IEEE 802.11b/g), 5.15~5.25 GHz (IEEE 802.11a), 3.4~3.53 GHz (WiMax 3.5 GHz), and 5.85~5.925 GHz (Dedicated Short Range Communications, DSRC) five bands. The final measurement results are listed as follows: the first band 1.765~1.788 GHz with S11 < 7.5 dB and S21 > 10.4 dB; the second band 2.462~2.534 GHz with S11 < 19.83 dB and S21 > 9 dB; the third band 3.381~3.467 GHz with S11 < 14.2 dB and S21 > 7.4 dB; the fourth band 5.084~5.159 GHz with S11 < 8.6 dB and S21 > 8.9 dB; the fifth band 5.7~5.845 GHz with S11 < 7.6 dB and S21 > 8.44 dB. These results validate the parallel-way design method way with SIR configurations for multi-band/multi-mode wireless applications.

第一章 緒論 ……………………………………………………………………..…1
1.1 研究動機 ……………………………………………………………………..1
1.2 文獻探討 ……………………………………………………………………..2
1.3 論文內容摘要 …………………………………………………………..……2
第二章 雙頻帶帶通濾波器之分析與設計..................................................................3
2.1 雙頻帶/多頻帶濾波器概論 ……………………………………….………....3
2.2 平行式方法 ……………………………………………………………….….5
2.3 平行式方法設計及實作雙頻帶濾波器 …………………………………....10
2.4 步階阻抗諧振器之架構與分析 …………………………………………....17
2.5 步階阻抗諧振器應用於雙頻帶濾波器之設計 …………………………....19
2.6 步階阻抗諧振器應用於雙頻帶濾波器之實作與量測 ……………………22
第三章 多頻帶帶通濾波器之設計 ………………………......................................26
3.1超外差接收機架構 ………………………………………………...…….….26
3.2 直接降頻接收機 ………………………………………………………....…27
3.3鏡像頻率 ………………………………………………………………...…..27
3.4 多頻帶濾波器頻率及本地震盪頻率之選擇 …………………………....…28
3.5 1.8/3.5/5.2GHz步階阻抗多頻濾波器之設計 ………………………..…..31
3.6 2.4/5.9GHz步階阻抗多頻濾波器之設計 …………………………..…....34
3.7 調整線之設計 ………………………………………………………………35
3.8 多頻帶濾波器模擬與實作結果 ……………………………………..……..37
第四章 結論 ………………………………………………………………….….....44
參考文獻 …………………………………………………………………………....45

[1] ”GSM technical specifications,” European digital cellular telecommunications systems (phase 2), European Telecommunication Standards Institute, 1994.
[2] IEEE std, Part11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, 1999 Edition.
[3] IEEE std, Part11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications :High-speed Physical Layer Extension in 2.4GHz band, 1999 Edition.
[4] IEEE std, Part11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications :High-speed Physical Layer Extension in 5GHz band, 1999 Edition.
[5] IEEE std, Part16: Air Interface for Fixed Broadband Wireless Access Systems, 2001 Edition.
[6] http://www.dsrc.com/
[7] G. L. Matthaei, L. Young, and E. M. T. Jones, Microwave Filter, Impedance-Matching Networks, and Coupling structures, Artech House, Dedham, Mass., 1980.
[8] S. B. Cohn,“Parallel-Coupled Transmission-Line-Resonator Filters,” IRE Trans. Microwave Theory Tech., vol. MTT-6, pp. 223-231, Apr. 1958.
[9] M. Makimoto and S. Yamashita, “Bandpass Filters Using Parallel Coupled Stripline Stepped Impedance Resonator,” IEEE Trans. Microwave Theory Tech., vol. MTT-28, pp. 1413-1417, Dec. 1980.
[10] X. Guan, Z. Ma, P. Cai, Y. Kobayashi, T. Anada, and G. Hagiwara, “Synthesis of Dual-Band Bandpass Filters Using Successive Frequency Transformations and Circuit Conversions,” IEEE Letts. Microwave and Wireless Components, vol. 16, NO.3, pp. 110-112, Mar. 2006.
[12] S. Wu, and R. Razavi, “A 900-MHz/1.8-GHz CMOS Receiver for Dual-Band Applications,” IEEE J. Solid-State Circuit, vol. 33, pp. 2178-2185, 1998.
[13] L. C. Tsai, and C. W. Hsue, “Dual-Band Bandpass Filters Using Equal-Length Coupled Serial-Shunted Lines and Z-Transform Technique,” IEEE Trans. Microwave Theory Tech., vol. 52, NO. 4, pp.1111-1117, Apr. 2004.
[14] D. M. Pozar, Microwave Engineering-second edition, John Wiley and Sons, 1998.
[15] Advanced Design System User Manual, Agilent Technology Corp., 2002.
[16] B. Razavi, Design of Analog CMOS Integrated Circuit, McGraw Hill, 1996.
[17] B. Leung, VLSI for Wireless Communication, Prentice Hall, 2002.
[18] 邱煥凱，《射頻積體電路講義》，中央大學電機工程研究所，2004。
[19] 戴文彬，〈應用於無線數位通訊次諧波混頻器之設計、製作和測試〉，元智大學碩士論文，2004。