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http://dx.doi.org/10.5515/KJKIEES.2010.21.7.726

Design of Inverted-F Antenna Using a Coupling Feed  

Kim, Sang-Won (Dept. of Electronic Engineering, Dankook University)
Choi, Hak-Keun (Dept. of Electronic Engineering, Dankook University)
Park, Jae-Hyun (Dept. of Electronic Engineering, Dankook University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.7, 2010 , pp. 726-733 More about this Journal
Abstract
This paper propose the printed inverted-F antenna using the coupling feed for the mobile phone. The coupling feed can normally leads the additional capacitances in the antenna, so the high inductive reactance of the antenna can be partly compensated. In this paper, it is shown that the bandwidth of the proposed antenna using the coupling feed is improved at $824{\sim}960$ MHz and $1,710{\sim}2,390$ MHz. Then it is compared with the simple direct feed to confirm the improvement of the bandwidth. The proposed antenna covers GSM850/GSM950/DCS/USPCS/WCDMA/Wibro and has the maximum gain of －$4.794{\sim}1.648$ dBi and shows omnidirectional patterns over the operating bands.
Keywords
Inverted_F Antenna; Coupling Feed; Multiband Antenna; Mobile Handset;
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