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Journal of the Korean Institute of Electromagnetic and Science 2004;4(1):8-12.
A Triple-Band Printed Dipole Antenna using Parasitic Elements for Multiple Wireless Services
Ki-Hun Chang1, Hyung-Rak Kim2, Kwang-Sun Hwang2, Ick-Jae Yoon2, Young-Joong Yoon1
1Dept. of Electrical and Electronic Eng., Yonsei University
2Dept. of Electrical and Electronic Eng., Yonsei Universit
Abstract
In this paper, a triple-band printed dipole antenna using parasitic elements is proposed for the multiple wireless services. The proposed antenna is designed and experimentally analyzed at the bands of PCS, IMT-2000, and ISM services. To achieve triple frequency operation, the proposed antenna contains two parasitic elements, which act as additional resonators by coupling from the driving dipole antenna. From the measured results, the resonant frequencies of this antenna are 1.79 ㎓, 2.03 ㎓, and 2.41 ㎓ and the measured impedance bandwidths are 90 MHz(1760∼1850 MHz), 210 MHz(1,930∼2,130 MHz), and 30 MHz(2,400∼2,430 MHz) for VSWR<2. The measured antenna gains are 2.14 ㏈i, 0.9 ㏈i, and 0.5 ㏈i, respectively. Antenna parameters for trifle-band operation are investigated and several antenna characteristics are discussed.
Key words: Parasitic Element, Triple-Band, Printed Dipole Antenna

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