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http://dx.doi.org/10.5515/KJKIEES.2012.23.4.424

Analysis of Effect of Capacitor Position in Ground Radiation Antenna  

Park, Bum-Ki (Department of Electronics Computer Engineering, Hanyang University)
Liu, Yang (Department of Electronics Computer Engineering, Hanyang University)
Choi, Hyeng-Chul (Department of Electronics Computer Engineering, Hanyang University)
Kim, Hyung-Hoon (Biomedical Engineering, Kwangju Women's University)
Kim, Hyeong-Dong (Department of Electronics Computer Engineering, Hanyang University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.23, no.4, 2012 , pp. 424-430 More about this Journal
Abstract
A ground radiation antenna is designed using a capacitor connected between two ground points by a strip line. This paper analyzes the variations of radiation performance when changing the capacitor position. The surface current distribution of the ground antenna was investigated as the capacitor position is changed, in order to demonstrate the effects on the impedance bandwidth and antenna efficiency. Our antenna is for the Wi-Fi application. It is verified that the capacitor at the end of the strip line provides a wide impedance bandwidth(7.2 % at the 2.45 GHz frequency) and good antenna efficiency(measured as 66 % averaged over the overall Wi-Fi frequency band).
Keywords
Ground Radiation Antenna; Reactive Component; Capacitor; Current Distribution; Radiation Efficiency;
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  • Reference
1 O. Cho, H. Choi, and H. Kim, "Loop-type ground antenna using capacitor", Electronics Letters, vol. 46, no. 1, pp. 11-12, Jan. 2011.
2 최형철, 이재석, 조얼, 이형진, 박범기, "그라운드 방사 안테나", 특허 제10-2010-0133919호, 2010년 12월.
3 Y. Liu, X. Lu, H. Jang, H. Choi, K. Jung, and H. Kim, "Loop-type ground antenna using resonated loop feeding, intended for mobile devices", Electronics Letters, vol. 47, no. 7, pp. 426-427, Mar. 2011.   DOI   ScienceOn
4 R. W. P. King, "The shunt-driven circular loop antenna", IEEE Transaction on Antenna and Propagation, vol. AP-19, Sep. 1971.
5 J. S. McLean, "A re-examination of the fundamental limits on the radiation Q of electrically small antenna", IEEE Transaction on Antennas and Propagation, vol. 44, pp. 672-676, May 2002.
6 G. A. Thiele, P. L. Detweiler, and R. P. Penno, "On the lower bound of the radiation Q for electrically small antenna", IEEE Transaction on Antennas and Propagation, vol. 51, pp. 1263-1269, Jun. 2003.   DOI   ScienceOn
7 C. A. Balanis, Antenna Theory : Analysis and Design, Wiley, pp. 852-854, 2005.