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http://dx.doi.org/10.6109/jkiice.2010.14.8.1745

Design and implementation of a small broadband dipole antenna using the symmetric double-ring structure  

Ju, Young-Rim (인하대학교 전자공학과)
Kim, Woo-Su (인하대학교 전자공학과)
Oh, Soon-Su (한국전자통신연구원)
Park, Hyo-Dal (인하대학교 전자공학과)
Abstract
In this paper, a small broadband dipole antenna that simultaneously satisfies DCS1800/PCS/WCDMA/WLAN is designed and fabricated. To reduce the size and to improve the bandwidth of planar microstrip dipole antenna, a new symmetric double-ring radiator structure is used. An antenna can be reduced with increasing effective current length of dipole, and can be obtained a wide band impedance characteristic with decreasing reactance component by using a novel symmetrical double-ring structure. The proposed antenna shows broadband characteristic of 1.07GHz(52%) from 1.5GHz to 2.57GHz with VSWR < 2 (${\leq}-10dB$).
Keywords
symmetric double-ring; Broadband; Dipole; Antenna;
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