• 藍色版面
  • 綠色版面
  • 橘色版面
  • 粉紅色版面
  • 棕色版面
帳號:guest(120.119.126.29)          離開系統
字體大小: 字級放大   字級縮小   預設字形  

詳目顯示

研究生: 劉子健
研究生(外文): Tzu-Chien Liu
論文名稱: 2.4GHz及5.8GHz之雙頻雙面反向線性漸窄式開槽天線設計
論文名稱(外文): 2.4GHz and 5.8GHz Dual Frequency Antipodal Linearly-Tapered Planner Slot Antenna Design
指導教授: 陳文字林易泉
指導教授(外文): Wen-Tzu ChenYih-Chuan Lin
學位類別: 碩士
校院名稱: 樹德科技大學
系所名稱: 電腦與通訊研究所
論文出版年: 2003
畢業學年度: 91
語文別: 中文
論文頁數: 77
中文關鍵詞: 漸窄式開槽天線反向線性漸窄式開槽天線三維有限元素法雙頻天線無線通訊端射
外文關鍵詞: Tapered Slot Antenna (TSA)Antipodal Linearly-Tapered Slot Antenna (ALTSA)3-D Finite-Element Method (FEM)High Frequency Structure Simulator(HFSS)IEEE802.11aIEEE802.11b
相關次數:
  • 被引用:0
  • 點閱:76
  • 評分:*****
  • 下載:21
  • 書目收藏:0
本論文研製2.4GHz及5.8GHz頻段雙頻平面型反向線性漸窄式開槽天線(ALTSA),包括以2.4GHz為主及以5.8GHz為主的兩款天線。ALTSA天線製作在FR-4基板上。在電磁模擬方面,採用三維有限元素法(3-D FEM)的HFSS。就2.4GHz為主的ALTSA而言,HFSS的模擬與實際製作量測在電壓駐波比(約1.1)與天線增益(約6dBi);而5.8GHz為主的ALTSA天線,其電壓駐波比(約1.15)與天線增益(約10dBi)。而在兩極天線中間的基板採用空氣當作介質可以使耗損減少許多,使增益提高。在論文中,兩片ALTSA在2.4GHz頻段的增益只有約6dBi,可能與基板的耗損及較高的旁波束(sidelobe)有關,這方面可以在繼續研究。本論文中所設計的ALTSA屬於指向性強的端射(endfire)天線,可以應用在2.4GHz以及5.8GHz頻段的通訊系統,如IEEE802.11b、IEEE802.11g及IEEE802.11a等系統。
This thesis presented the design of planar antipodal linearly-tapered slot antennas (ALTSAs), which operated at dual frequency band of 2.4GHz and 5.8GHz. These printed ALTSAs have been implemented by using the FR-4 PCB substrate. For electromagnetic simulation, we selected HFSS that using three-dimensional (3-D) finite element method (FEM). For 2.4GHz band, good consistency between simulation and measurement on VSWR (about 1.1) and antenna directivity (about 6dBi) are achieved in the range of 2.4 - 2.4835 GHz. For 5.8GHz band, good consistency between simulation and measurement on VSWR (about 1.15) and antenna directivity (about 10dBi) are also achieved in the range of 5.75~5.85GHz. The substrate between the two arms of the ALTSA is employed by air to reduce the antenna loss. The antenna directivity at 2.4GHz only has 6dBi. This could depend on substrate loss and high sidelobe. Further study is needed for improvement. In this thesis, the ALTSAs are directional antennas, which apply for 2.4GHz and 5.8GHz communication system, such as IEEE802.11b, IEEE802.11g, IEEE802.11a system.
第一章 序論………………………………………………………………1
          1.1  研究動機………………………………………………………1
          1.2  無線區域網路介紹……………………………………………1
          1.2.1  IEEE802.11b……………………………………………2
          1.2.2  IEEE802.11a……………………………………………3
          1.3  章節介紹………………………………………………………5
          第二章 ALTSA天線原理………………………………………………6
          2.1 TSA天線基本概要………………………………………………6
            2.1.1 TSA天線的簡介……………………………………………6
            2.1.2 TSA天線基本圖形介紹……………………………………6
            2.1.3 TSA天線基本尺寸參數……………………………………7
            2.1.4原始TSA天線的優缺點…………………………………9
          2.2對稱型TSA的的描述…………………………………………9
            2.2.1對稱型Vivaldi天線介紹………………………………9
            2.2.2變異型的LTSA ─ ALTSA………………………………11
          2.3實際ALTSA寬頻特性的描述…………………………………13
          第三章 天線雙頻的特色………………………………………………16
              3.1 雙頻之意義……………………………………………………16
              3.2 雙頻天線之做法………………………………………………16
              3.3 雙頻天線之評估………………………………………………22
          第四章 天線模擬軟體介紹……………………………………………24
              4.1 3-D FEM的基本概念…………………………………………24
              4.2 3-D FEM的模擬運作流程……………………………………27
          第五章 ALTSA雙頻天線模擬與實作…………………………………30
              5.1 模型的圖形與尺寸……………………………………………30
                5.1.1 2.4GHz天線介紹…………………………………………30
                5.1.2 5.8GHz天線介紹…………………………………………33
              5.2 ALTSA元件的調整與比較……………………………………36
                5.2.1 長度L之調整……………………………………………36
                5.2.2 基板材料的選擇…………………………………………37
                5.2.3 兩個夾角之間的材料影響………………………………41
                5.2.4 不同夾角的選擇…………………………………………43
                5.2.5 弧度R1的選擇…………………………………………44
              5.3 ALTSA雙頻天線實作…………………………………………46
                5.3.1 實作一:以2.4GHz為主之ALTSA………………………47
                5.3.2 實作二:以5.8GHz為主之ALTSA………………………58
                5.3.3 實作總結…………………………………………………69
              5.4 旁波束(sidelobe)之改善探討………………………………70
                5.4.1 不同角度下之比較………………………………………70
                5.4.2 使用BLTSA天線做法……………………………………71
                5.4.3 改變R2之弧長……………………………………………73
          第六章 結論……………………………………………………………75
          參考資料…………………………………………………………………76
[1] International Standard ISO/DIS 8802-11:1999 (E) IEEE Std 802.11a-1999.
[2] International Standard ISO/DIS 8802-11:1999 (E) IEEE Std 802.11b-1999.
[3] International Standard ISO/DIS 8802-11:2002 (E) IEEE Std 802.11g-2002.
[4] Kai Fong Lee, Wei Chen, Advances in Microstrip and Printed Antennas, John Wiley & Sons, New York, 1997.
[5] Microwave Engineering Online Europe Magazine,
http://www.mwee.com/magazine/2000/cad_benchmark.html
[6] Pranay R. Acharya, Hans Ekström, and Steven S. Gearhart, et al., “Tapered Slot Antennas at 802 GHz,” IEEE Trans. on Microwave Theory and Techniques, vol. 41, No. 10, October 1993.
[7] K. S. Yngvesson et al., “The Tapered Slot Antenna- A New Integrated Element for Millimeter-Wave Applications,” IEEE Transactions on Microwave Theory and Techniques, vol. MTT-37, No. 2, pp. 365-374, Feb. 1989.
[8] Chen Wu, Linping Shen, Gang-Yi Deng, Ying Shen and John Litva, “Experimental Study of a Wide Band LTSA Which is Fed by an Inverted Microstrip Line (IML),” IEEE Antennas and Propagation Society International Symposium, vol. 4, pp. 2328-2331, 1998.
[9] R. N. Simons, R. Q. Lee and T. D. Perl, “Non-Planar Linearly Tapered Slot Antenna with Balanced Microstrip Feed,” IEEE AP-S International Symposium, vol. 4, Chicago, IL, pp. 2109-2112, 1992.
[10] Ing. Zbynek Lukes.,“Vivaldiho anténa - sirokopásmová sterbinová antenna”,
http://www.elektrorevue.cz/clanky/02042/.iso-8859-1
[11] E.Gazit, “Improved Design of the Vivaldi Antenna,” IEEE Proceeding, Part H, vol. 135, No2, pp. 89-92, 1988.
[12] R. N. Simons and R. Q. Lee, “Space Power Amplification with Active Linearly Tapered Slot Antenna Array,” IEEE MTT-S Digest, pp. 623-626, 1993.
[13] 鄭世杰,“ 5GHz Antipodal Linearly-Tapered Planar Slot Antenna Arrays Design”, Department of Computer and Communication Shu-Te University, Kaohsiung, Taiwan, R.O.C. Thesis for Master of Science, June, 2003.
[14] S.R. Pennock and P.R. Shepherd 著、李世鴻 譯,微波工程,五南書局,2002年7月出版,P63 — P83頁。
[15] 郭啟仁,”Dual-band notch antennas and printed diversity antennas”, 國立交通大學電信工程系,2001年。
[16] Shan Cheng Pan, Wen Hsiu Hsu, “Single-feed dual-frequency microstrip antenna with two patches,” IEEE Antenna and Propagation Society, 1999, Vol.3, Page(s):1644 — 1647.
[17] G.P. Strvaitava, S. Bhattacharya and S.K. Padhi, ”Dual band tunable microstrip patch antenna,” ELECTRONICS LETTERS 19th August 1999, Vol.35, No.17,
[18] Keith Tillev, Xiao Dong Wu, Kai Chang, ”Dual frequency coplanar strip dipole antenna,” Antennas and Propagation Society International Symposium, 1994. AP-S. Digest , Volume: 2 , 20-24 June 1994 Page(s): 928 -931 vol.2
[19] Ansoft HFSS Training Material, Chinese association of computer-aid Engineering, 2002.
[20] John D. Kraus and Ronald J. Marhefka, Antennas For All Applications, 3/e,McGrawHill.
[21] Liang-Chen Kuo ,Meng-Chung Tsai, and Huey-Ru Chuang, “3-D FDTD Simulation and Experimental Measurement of a PlanarKa-band Antipodal Linearly-Tapered Slot Antenna,” submitted to Electronics Letter..
[22]微波在線 ─ Kilomega Online,中國大陸
http://www.kilomega.com/software/index.htm
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
* *