||The design and analysis of a planar, compact, and flexible zigzag dipole are presented. A flexible printed circuit board (FPCB), which is light, thin, and bendable,is exploited for antenna substrate design. The zigzag structure is used to realize a compact antenna design. The flexible zigzag dipole structure can be deformed into planar, parabolic, cylindrical, and elliptical forms through the molds made of rigid polyurethane. In this thesis, the parametric study regarding the impact of the structure|
deformation on the antenna radiation characteristics are presented, and the simulated results are verified by experimental demonstration. The simulated and experimental
results show that the operating frequency and the radiation efficiency decrease owing to the structure deformation. Specifically, the decrease of the radiation efficiency is
mainly attributed to the increase of capacitive coupling between the two zigzagged arms of the dipole, which leads to poor radiation from the antenna structure. In addition, the increase of the capacitive coupling corresponding to the increase of the capacitance in the antenna equivalent lumped circuit. Consequently, the resonant frequency of the dipole is down shifted. As for the radiation patterns, the structure deformation leads to the decrease of the antenna directivity. Technically, the deformation, especially for the cases in cylindrical, and elliptical forms, appears to
convert the original directional radiation source into the omnidirectional one. The iii propose antenna can find applications in medical implant devices, wearable computer
systems, and smart clothing.
|| Lars Joseffson, and Patrik Persson, Conformal Array Antenna Theory and Design.|
New York: John Wiley & Sons, 2006.
 Online information available at http://blog.sina.com.tw/sandychang/article.php?pbgid=40436&entryid=576749
 Online information available at
 J. J. Ockerman, L. J. Najjar, J. C. Thompson, C. J. Treanor, and F. D. Atkinson,“FAST: A Research Paradigm for Educational Performance Support Systems,”
Educational Multimedia and Hypermedia 1996, pp. 545-550.
 Online information available at
 G. DeJean, R. Bairavasubramanian, D. Thompson, G. E. Ponchak, M. M. Tentzeris, and J. Papapolymerou,“Liquid Crystal Polymer (LCP): A New Organic
Material for the Development of Multilayer Dual-Frequency/Dual-Polarization
Flexible Antenna Arrays,”IEEE Antennas and Wireless Propagation Letters, vol.4, pp.22-26, Jun. 2006.
 Xingyu Zhang, and Anping Zhao,“Flexible Compact Planar Inverted-F Antenna for GSM/DCS/PCS Triple-Band Applications,”in 8th International Symposium Antennas, Propagation and EM Theory, Kunming, Yunnan, China, 2008, pp.15-18.
 H. Furuya, N. Guan, and K. Ito,“A Basic Study on a Flexible Antenna for Wireless LAN of 2.4/5 GHz Application,”in International Workshop Antenna
Technology: Small Antennas and Novel Metamaterials, 2008, Chiba, Japan, pp. 526-529.
 Hyung Kuk Yoon, Woo Suk Kang, Young Joong Yoon, Cheon-Hee Lee,“A Flexible UWB Antenna Attachable to Various Kinds of Materials,”in IEEE 2007 International Conference Ultra-Wideband, Singapore, pp. 204-209.
 C. Cibin, P. Leuchtmann, M. Gimersky, R. Vahldieck, S. Moscibroda,“AFlexible Wearable Antenna,”in IEEE 2004 Antennas and Propagation Society International Symposium, vol. 4, pp. 3589-3592.
 G.Y. Chen, J. S. Sun,“Design of Flexible Printed Antenna,”Electronics Letters, vol. 40, no. 17, pp. 1034-1035, Aug. 2004.
 A. Galehdar, D.V. Thiel,“Flexible, Light-Weight Antenna at 2.4GHz for Athlete Clothing,”in IEEE 2007 Antennas and Propagation Society International Symposium, pp. 4160-4163.
 Changren Zhou, Zhengji Yi,“Blood-Compatibility of Polyurethane/Liquid Crystal Composite Membranes,”Biomaterials, Elsevier, vol.20, pp. 2093-2099, Apr. 1999.
 Rainee N. Simons, Coplanar Waveguide Circuits, Components, and Systems, New York: John Wiley & Sons, 2001.
 K. Goverdhanam, R.N. Simons, L.P.B Katehi,“Coplanar Stripline Components for High Frequency Applications,”IEEE Transaction on Microwave Theory and Techniques, vol. 45, no. 10, pp. 1193-1196, Oct. 1997.
 R.N. Simons, N.I. Dib, L.P.B. Katehi,“Modeling of Coplanar Stripline Discontinuities,”IEEE Transaction on Microwave Theory and Techniques, May 1996, vol. 44, no. 5, pp. 711-716.
 H.A. Wheeler,“Small Antennas,”IEEE Transactions on Antennas and Propagation, vol. ap-23, no. 4, pp. 462-469, Jul. 1975.
 H.A. Wheeler,“The Radiansphere around a Small Antennas,”IRE Proc., vol. 47, pp. 1325-1331, Aug. 1959.
 Kraus Marhefka, Antennas For All Applications. New York: Mc Graw Hill, 2003.
 H. Nakano, H. Tagami, A. Yoshizawa, J. Yamauchi,“Shortening Ratios of Modified Dipole Antennas,”IEEE Transactions on Antennas and Propagation, vol. ap-32, no. 4, pp. 385-386, April 1984.
 R.H. MacPhie, S.K. Darbha,“The Input Impedance of a Thin Dipole withSinusoidal Surface Current Distribution by the Poynting Vector Method,”IEEE Transactions on Antennas and Propagation, vol. 43, no. 11, pp. 1336-1339, Nov. 1995.
 聚氨酯硬泡CFC-11 替代技術手冊, 中華人民共和國國家環保總局對外經濟
合作領導小組辦公室, 聯合國工業發展組織, 北京華塑貿易公司, 2002 年8 月.