臺灣博碩士論文加值系統

本論文討論兩種用於無線區域網路通訊上之小型化天線，其製程不但容易與其他元件整合，同時也能方便在單獨製作上量產。
第一種形式為積體化平面倒F(PIFA)天線，我們提出一簡單的天線架構，在FR4基材上嵌入一平面倒F天線，在體積條件受到限制的情況下， 經由Ansoft HFSS模擬探討其饋入點位置及短路點位置對於此天線頻寬以及阻抗匹配上的影響，再利用簡單PCB製程上完成一個可以大量生產同時也能簡單與其他元件整合之積體化天線。
另外，利用微機電技術，我們提出了曲折式單極化(meander monopole)的天線架構，透過模擬討論各項參數所造成之影響與變化，製作一平面式以及一立體式之曲折式單極化天線；其製程易與一般通訊系統CMOS製程進行整合，在個別生產上也具有相當優勢。

Two compact antennas suitable for wireless LAN are described in this thesis. Both of them are integrated with other component simply, also can batch fabrication.
A chip planar inverted F antenna structure is discussed. The chip PIFA built in FR4 substrate. The dimension of antenna is limited. Utilized simulation software, named Ansoft HFSS, the effects of bandwidth and impedance because different feed-point and different shorten-cylinder position are described. The chip PIFA has the advantage of effortless integrated with other device and mass of fabrication.
Analysis of microelectromechanical systems (MEMS) technology, the meander monopole is presented. Simulations about various parameters are tested. A planar MEMS meander monopole antenna and a 3D meander monopole antenna, can integrate with CMOS process and batch fabrication are fabricated.

Chinese Abstract..............................................I
English Abstract.............................................II
Acknowledgement.............................................III
Contents.....................................................IV
Tables Captions..............................................VI
Figures Captions............................................VII
CHAP 1 Introduction..........................................1
1.1 Motivation............................................1
1.2 Organization..........................................2
CHAP 2 The Theory of Monopole Antenna, Meander Antenna,
PIFA and MEMS technology.....................................3
2.1 The Theory of Monopole Antenna........................3
2.2 The Theory of Meander Line Monopole Antenna...........5
2.3 The Theory of PIFA....................................8
2.4 MEMS Technology......................................12
2.4.1 Introduction of MEMS................................12
2.4.2 Surface micromachining...............................12
2.4.3 Bulk micromachining................................…12
2.4.4 LIG..................................................12
2.4.5 Process................................................13
CHAP 3 Chip Planar Inverted F Antenna Design................18
3.1 Design of Chip Planar Inverted F Antenna..............18
3.2 Simulation and Measurement Result of Chip-PIFA........20
CHAP 4 MEMS Meander Monopole Antenna Design.................40
4.1 Design of Planar MEMS Meander Monopole Antenna........32
4.2 Simulation of Planar MEMS Meander Monopole Antenna....33
4.3 Design of 3D MEMS Meander Monopole Antenna............37
4.4 Simulation of 3D MEMS Meander Monopole Antenna........38
CHAP 5 Conclusion and Future Study...........................42
5.1 Conclusion............................................42
5.2 Future Study..........................................43
Reference....................................................44

[1] Fujimoto K., Henderson A., Hirasawa K., and James J.R., Small Antenna, England and J. Wiley & Sons, 1987
[2] Kikuo Tsunoda, Tokio Taga, Analysis of Planar Inverted F Antenna Using Spatial Network Method, Antennas and Propagation Society International Symposium,1990.AP-S. Merging Technologied for the 90’s. Digest.
[3] W. L. Stutzman and G. A. Thiele, Antenna Theory and Design, John Wiley $ Sons, New York, Chapter 2, 1998
[4] Balanis, Antenna Theory Analysis and Design, John Wiley $ Sons, New York, Chapter 4, 1997
[5] Lal Chand Godara, Handbook of Antenna in Wireless Communications,Boca Raton London New York Washington,D.C. pp.12-8 12-40,2002
[6] M.Ali,S. S. Stuchly, and K. Caputa, A wide-band dual meander-sleeve antenna, J. Electromagnet. Waves and Appl., vol. 10, no.9, pp.1223-1236, 1996
[7] H. Nakano, H. Tagami, A. Yoshizawa, and J. Yamauchi, Shortening ratio of modified dipole antennas, IEEE Trans. Antennas Propag, vol. AP-32, no.4 pp. 385-386, April 1984
[8] H.Y. Wang and M. J. Lancaster, Aperture-coupled thin-film superconducting meander line antennas, IEEE Trans. Antennas Propag, vol. 47, no.5, pp.829-836,May 1999
[9] Raleigh, G.G., Diggavi, S.N., Jones, V.K., and Paulraj, A., A blind adaptive transmit antenna algorithm for wireless communication, in Proc. ICC, IEEE, 1995,vol.3 ,1494-1499
[10] Hochwald, B.M. and Marzetta, T.L., Adapting a downlind array from uplink measurements, in Proc. SPIE Aerosense Conf., 1999
[11] Fang, I. Hsu, Planar Near-Field to Far-Far-Field Transformation and PIFA Antenna Suitable for Wireless LAN, 碩士論文, 31-49, June 2002
[12] Kathleen L. Virga and Yahya Rahmat-Samii, Low-Profile Enhanced-Bandwidth PIFA Antennas for Wireless Communications Packaging, IEEE Trans. Microwave theory and Techniques, vol 45, no. 10, Oct 1997
[13] Chien-Jen Wang and Christina F. Jou, Compact Microstrip Meander Antenna, IEEE Trans. Microwave and Optical Technology Letters, vol.22, no. 6, September 20 1999