臺灣博碩士論文加值系統

近年來無線通訊技術越來越發達，已經被廣泛的應用在企業或是個人通訊上並且正在積極的推動所有可能性，目前在日常生活中最常見的就是WiFi(Wireless fidelity)，WiFi是一個無線網路通訊技術的品牌，被廣泛的應用在各大城市中。

因此在本篇論文中，將設計應用於無線通訊網路WiFi IEEE 802.11 a/b/g所使用的天線來做探討，工作頻率分別是2.45 GHz以及5.8 GHz，論文中將分為兩大部分做介紹分別是立體式的套筒陣列天線為主，及平面式的套筒陣列天線為主，由於都是串聯式的陣列天線，所以在論文中將研究如何降低串聯式陣列天線的損耗功率以提升天線的效率，讓串聯式的陣列天線可以發揮出更高的天線增益。

另外在論文中，有設計一應用在HSPDA的平面倒F天線，HSDPA是High Speed Downlink Packet Access的縮寫，是一種行動通訊協議，亦稱為3.5G，HSPDA應用的頻段較多，分別為850 MHz、1900 MHz以及2100 MHz，然而在通訊系統上空間相當重要，因此設計平面倒F天線來達到多頻帶以及體積小的要求。

The past decade has seen a phenomenal growth in wireless communications. Wireless technology is permeating business and personal communications are across the globe, and the demand is driving the availability and performance to the new levels. WiFi(Wireless Fidelity) is the most common communication standard.

In this research, which design coaxial sleeve dipole antenna array and the sleeve dipole antenna array by print circuit board for IEEE 802.11a/b/g, which operate frequencies are 2.45 GHz and 5.8 GHz. and the sleeve dipole antenna array by print circuit board can combine reflector to increase directivity. The sleeve dipole antenna array by print circuit board is linear antenna array , when antenna elements more and more, the taper efficiency is very important, so this thesis, will optimize of taper efficiency to get best directivity. The simulations are done by using GEMS, a parallelized FDTD (Finite-Difference Time-Domain) code

In this thesis, the planar inverted F antenna is designed for HSDPA. High-Speed Downlink Packet Access (HSDPA) is an enhanced 3G (third generation) mobile telephony communications protocol in the High-Speed Packet Access (HSPA) family, also called 3.5 G, which the operate frequencies are 850 MHz, 1900 MHz and 2100 MHz, however, the space is very important in communication system, so the planar inverted-F antenna will be designed to achieve multi-band and small size requirements.

博碩士論文授權書
論文封面
論文指導教授薦書
論文口試委員審定書
誌謝
Chinese Abstract
English Abstract
Contents
List of Figures
List of Table
Chapter 1 Introduction...................................................................1
1.1 Research Motivation............................................................................1
1.2 Introduction of WIFI............................................................................2
1.3 Introduction of 802.11a/b/g..................................................................2
1.4 Thesis Outlines.....................................................................................3
Chapter 2 Design of Coaxial Sleeve Dipole Antenna....................5
2.1 Theory of Sleeve Dipole Antenna........................................................5
2.2 Simulation of Coaxial Sleeve Dipole Antenna.....................................6
2.3 Simulation and Measurement Results of Sleeve Dipole Antenna.................................................................................................7
2.4 Summary...............................................................................................8
Chapter 3 Design of Coaxial Sleeve Dipole Antenna Array.......15
3.1 Motivation..........................................................................................15
3.2 Theory of Antenna Array....................................................................15
3.3 Simulation of Coaxial Sleeve Dipole Antenna Array.........................18
3.4 Simulation and Measurement Results of Sleeve Dipole Antenna
Array...................................................................................................19
3.5 Summary.............................................................................................19
Chapter 4 Sleeve Dipole Antenna Array by Print Circuit Board.............................................................................26
4.1 Introduction of Sleeve Dipole Antenna Array by Print Circuit
Board..................................................................................................26
4.2 Simulation of Sleeve Dipole Antenna Array by Print Circuit
Board...................................................................................................27
4.3 Simulation and Measurement Results of Sleeve Dipole
Antenna Array by Print Circuit Board.................................................30
4.4 Summary.............................................................................................32
Chapter 5 Design of Planar Inverted F Antenna For HSDPA.50
5.1 Introduction of HSDPA.......................................................................50
5.2 Introduction of Planar Inverted F Antenna..........................................52
5.3 Simulation of Planar Inverted F Antenna............................................53
5.4 Simulation and Measurement Results of Planar Inverted F Antenna..54
5.5 Summary..............................................................................................55
Chapter 6 Conclusion....................................................................67
6.1 Summary..............................................................................................67
References......................................................................................................69

[1]GEMS, 3-D High Performance parallel EM simulation Software, www.2comu.com.
[2]R.S.Elliott “On the Design of Traveling-Wave-Fed Longitudinal Shunt Slot Arrays “, IEEE TRANSACTIONS ON ANTENNA AND PROPAGATION, VOL. AP-27,NO.5, SEPTEMBER 1979
[3]Wen-Shi Lee, Yi-Shien Chen, “900/1800MHz dual-band ceramic chip antenna bandwidth improvement and equivalent circuit simulation and analysis” National Cheng Kung University, 2005
[4]Wenhua Yu, Xiaoling Yang, Yongjun Liu, Zheng (Warren) Li, Raj Mittra, Li (Racky) Li, Neng-Tien Huang, Electromagnetic Simulation Engineering
[5] Yi-Chia Lin , Ching-Wen Hsue , “Design of Dual-Band Baluns and Their Applications to Antenna Measurement” Matter Thesis National Taiwan University of Science and Technology, 2006.
[6]Jung-Change, Chung-Ping Liu, “A study of printed inverted-F antenna in WLAN band” Matter Thesis Yuan Ze University,2005
[7]Ya-Chung Yu, Jenn-Hwan Tarng, “The Miniaturization of the Multi-Band Planar Inverted-F Antenna” Matter Thesis National Chiao Tung University,2008
[8]Yen-Yu Chen, Kin-Lu Wong, “Novel Antenna Designs For A Pcmcia Card” Matter Thesis National Sun Yat-Sen University,2003
[9]Chia-Yu Lee, Shyh-Jong Chung, “Design of On-Package Planar Inverted-F Antenna for RF System-on-Package Application” Matter Thesis National Chiao Tung University, 2005
[10]Chun-Lin Liu, Ching-Wen Hsue, “Dual-band Antennas Design for Wireless Communication Applications” Matter Thesis National Taiwan University of Science and Technology, 2004
[11]Yi-Chia Lin, Ching-Wen Hsue, “Design of Dual-Band Baluns and Their Applications to Antenna Measurement” Matter Thesis National Taiwan University of Science and Technology, 2007
[12]John D. Kraus, Ronald J. Marhefka, Antenna for All Applications, 2002
[13]Robert S. Elliott, Robert B. Collin, Antenna Theory and Design Revised Edition
[14]Richard H. Chen, “Miniaturized Design of Microstrip-Fed Slot Antennas for MIMO System Applications” Matter Thesis National Taiwan University, 2010