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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/62421完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 林怡成 | |
| dc.contributor.author | Yu-Hsiang Chang | en |
| dc.contributor.author | 張宇翔 | zh_TW |
| dc.date.accessioned | 2021-06-16T16:02:19Z | - |
| dc.date.available | 2018-08-06 | |
| dc.date.copyright | 2013-08-06 | |
| dc.date.issued | 2013 | |
| dc.date.submitted | 2013-07-08 | |
| dc.identifier.citation | [1] Y. D. Dong, W. Hong, Z. Q. Kuai, and J. X. Chen, “Analysis of planar ultrawideband antennas with on-ground slot band-notched structures,” IEEE Trans. Antennas Propag., vol. 57, no. 7, pp. 1886–1893, Jul. 2009
[2] Q.-X. Chu and Y.- Y. Yang, “A Compact Ultrawideband Antenna With 3.4/5.5 GHz Dual Band-Notched Characteristics”, IEEE Trans. Antennas Propag., vol. 56, no. 12, pp. 3637–3644, Dec. 2008. [3] K. S. Ryu and A. A. Kishk, “UWB antenna with single or dual band-notches for lower WLAN band and upper WLAN band”, IEEE Trans. Antennas Propag., vol. 57, no. 12, pp. 3942 -3950, Dec. 2009. [4] A. Habashi, J. Nourinia, and C. Ghobadi, “Mutual coupling reduction between very closely spaced patch antennas using low-profile folded split-ring resonators (FSRRs),” IEEE Antennas Wireless Propag. Lett., vol. 10, pp. 862–865, 2011. [5] K.-J. Kim, W.-G. Lim and J.-W. Yu, “High Isolation Internal Dual-Band Planar Inverted-F Antenna Diversity System with Band-Notched Slots for MIMO Terminals,” Proc. of 36th European Microwave Conf., pp. 1414-1417, Sep. 2006 [6] C. Caloz, H. Okabe, T. Iwai, and T. Itoh, “A simple and accurate model for microstrip structures with slotted ground plane,” IEEE Microwave Wireless Comp. Lett., vol. 14, no. 4, pp. 133–135, Apr. 2004. [7] C.-Y. Chiu, C.-H. Cheng, R. D. Murch, and C. R. Rowell, “Reduction of mutual coupling between closely-packed antenna elements,” IEEE Trans. Antennas Propag., vol. 55, no. 6, pp. 1732–1738, Jun. 2007. [8] A. Diallo, C. Luxey, P. L. Thuc, R. Staraj, and G. Kossiavas, “Study and reduction of the mutual coupling between two mobile phone PIFAs operating in the DCS1800 and UMTS bands,” IEEE Trans. Antennas Propag., vol. 54, no. 8, pp. 2771–2776, Nov. 2006. [9] A. C. K. Mak, C. R. Rowell, and R. D. Murch, “Isolation enhancement between two closely packed antennas,” IEEE Trans. Antennas Propag., vol. 56, no11, pp. 3411–3419, Nov. 2008. [10] Z.-Li, Z.-Du, M. Takahashi, K. Saito, and K. Ito, “Reducing mutual coupling of MIMO antennas with parasitic elements for mobile terminals,” IEEE Trans. Antennas Propag., vol. 60, no.2, pp. 473-481, Feb. 2012. [11] C. C. Chang, C. Caloz, and T. Itoh, “Analysis of a compact slot resonator in the ground plane for microstrip structures:” in 2001 Asia-Pacific Microwave Conf., pp. 1100-1103, 200l. [12] D.-J. Woo, T.-K. Lee, J.-W. Lee, C.-S. Pyo, and 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. [13] J. D. Kraus and R. J. Marhefka, Antennas for all applications, 3rd ed, New York: McGrawHill, pp.60 and pp.177-182, 2001. [14] D. Valderas, B. Sedano, A. Garcia-Alonso, and J. I. Sancho, “Synthesis of TLM-based UWB planar monopole impedance bandwidth,” IEEE Trans. Antennas Propag., vol. 55, no. 10, pp. 2874–2879, Oct. 2007. [15] J. Liang, C.-C. Chiau, X. Chen, and C. G. Parini, “Study of a printed circular disc monopole antenna for UWB systems,” IEEE Trans. Antennas Propag., vol. 53, no. 11, pp. 3500-3504, Nov. 2005. [16] I. Pele, A. Chousseaud, and S. Toutain, “Simultaneous modeling of impedance and radiation pattern antenna for UWB pulse modulation,” in Proc. IEEE AP-S Int. Symp., pp. 1871–1874, Jul. 2004. [17] David M. Pozar, Microwave engineering, 3rd ed, Hoboken, NJ: John Wiley & Sons, Inc. pp.266-271, 2011. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/62421 | - |
| dc.description.abstract | 本論文提出了多頻帶的多輸入多輸出天線系統，相較於大部分的多頻天線用結構上的延伸來增加額外的頻帶，本論文以頻帶阻絕的方式來達到多頻的效果。本論文中先分析V形槽孔濾波器在傳輸線時的特性，再與超寬頻天線整合，將過V形槽孔做適當的調整後，過濾掉不需要的頻帶，即可設計出一個多頻帶的天線。此流程的優點在於天線本身不需要重新設計，只要將V形槽孔的參數重新調整後，就可以將天線做不同的應用。
除了與天線整合，我們也將同樣的概念用於提高天線之間的隔離度。兩支天線在近距離擺放時，由於共用接地面，容易產生電磁耦合的效應，造成天線匹配與效率變差，在天線共用的接地面加上槽孔，可以利用其頻帶阻絕的特性抑制電流，提升兩支天線間的隔離度。 本論文中提出了槽孔型濾波器、單極超寬頻天線以及帶阻天線之等效電路模型，由電路模型可以更加理解其工作原理，天線的部分也透過實作與模擬結果互相驗證，量測與模擬結果相當吻合。 | zh_TW |
| dc.description.abstract | In this thesis, a multi-band MIMO antenna system is proposed. Compared to the traditional multi-band antennas using extended geometry to obtain additional operation bands, we employed the band-notching concept to achieve multi-band operation. We started with the analysis of the microstrip line over a V-shaped defected ground structure. Then, we applied V-slots on the UWB monopole antenna. By properly designing the slot dimension, we can notch out unwanted bands to complete a multi-band antenna. Using the proposed design method, the antenna can be easily modified for various applications simply by re-designing the V-slots without changing the antenna dimension. The mutual coupling is a critical issue when two antennas are closely spaced. We also applied the band-notched slots on the common ground. The isolation of two antennas was successfully enhanced.
The equivalent circuit models of V-shaped DGS, UWB monopole and tri-band notched antenna are proposed. Through the circuit model, we have a deeper insight of the working principle of our designs. The prototype of UWB monopole antenna, tri-band notched antenna and multi-band MIMO antenna system were designed, built, and tested with a very good agreement between the simulated and measured results. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-16T16:02:19Z (GMT). No. of bitstreams: 1 ntu-102-R00942024-1.pdf: 8065483 bytes, checksum: 58360ae056eb97d680475ba80aaa657a (MD5) Previous issue date: 2013 | en |
| dc.description.tableofcontents | 論文口試委員會審定書 i
致謝 ii 摘要 iii Abstract iv 目錄 v 圖目錄 vii 表目錄 xi 第一章 緒論 1 1.1 知識背景 1 1.2 文獻探討 1 1.3 研究動機 2 1.4 論文架構 3 第二章 V形缺陷式接地面濾波器設計分析 4 2.1 設計概念 4 2.2 濾波器設計及特性分析 5 2.2.1 單一V形槽孔 6 2.2.2 多個V形槽孔 8 2.3 等效電路模型 10 2.3.1 單一V形槽孔 10 2.3.2 雙V形槽孔 15 2.4 結論 18 第三章 圓盤形單極超寬頻天線設計 19 3.1 基本原理 19 3.1.1 偶極天線 19 3.1.2 單極天線 20 3.2 設計概念 21 3.3 等效電路模型 24 3.3.1 共振腔的萃取 24 3.3.2 虛部阻抗 27 3.3.3 實部阻抗 31 3.4 實作及量測結果 35 3.5 結論 40 第四章 整合式帶阻天線設計 41 4.1 設計概念 41 4.1.1 低頻濾波（2.1~2.4 GHz） 42 4.1.2 中頻濾波（2.5~4.9 GHz） 45 4.1.3 高頻濾波（6~7 GHz） 49 4.1.4 三頻帶阻天線 50 4.2 等效電路模型 52 4.2.1 整合式單V形槽孔單頻帶阻天線 57 4.2.2 整合式雙V形槽孔單頻帶阻天線 58 4.2.3 整合式雙V形槽孔雙頻帶阻天線 60 4.3 實作及量測結果 61 4.4 結論 67 第五章 多頻帶多輸入多輸出天線系統 68 5.1 系統架構及耦合特性分析 68 5.2 槽孔型濾波器提高隔離度之設計與結構 70 5.3 實作及量測結果 74 5.4 結論 80 第六章 總結 81 參考文獻 82 | |
| dc.language.iso | zh-TW | |
| dc.subject | 單極天線 | zh_TW |
| dc.subject | 超寬頻 | zh_TW |
| dc.subject | 頻帶阻絕 | zh_TW |
| dc.subject | 多輸入多輸出 | zh_TW |
| dc.subject | 多頻天線 | zh_TW |
| dc.subject | UWB | en |
| dc.subject | defected ground structure (DGS) | en |
| dc.subject | MIMO | en |
| dc.subject | monopole | en |
| dc.subject | multi-band antennas | en |
| dc.subject | band-notch | en |
| dc.title | 多頻帶阻絕天線之設計與電路模型分析 | zh_TW |
| dc.title | Design and Modeling of Multi-band Notched Antennas | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 101-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 鍾世忠,林育德,張道治 | |
| dc.subject.keyword | 頻帶阻絕,多頻天線,單極天線,多輸入多輸出,超寬頻, | zh_TW |
| dc.subject.keyword | band-notch,defected ground structure (DGS),MIMO,monopole,multi-band antennas,UWB, | en |
| dc.relation.page | 83 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2013-07-08 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電信工程學研究所 | zh_TW |
| 顯示於系所單位： | 電信工程學研究所 | |
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