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Design of the CPW-Fed Triple-band Internal Planar Monopole Antenna  

Lim, Jung-Sup (Gyeongsang National University, Dept. Electronic Engineering)
Kim, Cheol-Bok (Gyeongsang National University, Dept. Electronic Engineering)
Jang, Jae-Sam (Gyeongsang National University, Dept. Electronic Engineering)
Lee, Ho-Sang (Gyeongsang National University, Dept. Electronic Engineering)
Jung, Young-Ho (Gyeongsang National University, Dept. Electronic Engineering)
Cho, Dong-Ki (Gyeongsang National University, Dept. Electronic Engineering)
Lee, Mun-Soo (Engineering Research Institute, Gyeongsang National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.12, 2007 , pp. 73-78 More about this Journal
Abstract
In this paper, the CPW-fed triple-band internal planar monopole antenna which simultaneously meets the three bands such as Cellular, PCS and Wibro is designed. The size of the radiation elements can be reduced to about $\lambda/4$ by designing the CPW-fed monopole antenna and then we can miniaturize the antenna size by meandering the radiation elements. In addition, we design the planar antenna for the slim-type mobile phone. We can obtain the desired antenna properties by controlling the length of each radiation elements. The measured return loss of the antenna is less than -7 dB at the desired bandwidth. And the measured radiation patterns are similar to that of the monopole antenna. The designed antenna has the gains -5.2 dBi. -2 dBi, -0.4 dBi at each resonant frequencies respectively.
Keywords
CPW-Fed; Meander; Planar Monopole; Triple-Band Antenna;
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