Vol. 41

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2013-07-09

A Wideband Magneto-Electric Dipole Antenna Using CPW Structure

By Jiao-Jiao Xie, Shengliang Deng, and Ying-Zeng Yin
Progress In Electromagnetics Research C, Vol. 41, 217-226, 2013
doi:10.2528/PIERC13050310

Abstract

A new wideband magneto-electric dipole antenna using coplanar waveguide (CPW) structure is proposed in this paper. The proposed antenna consists of a pair of horizontal triangular patches and two vertically oriented L-shaped strips. By introducing triangular patches working as an electric dipole, the antenna can operate in a wide band. With the use of L-shaped strips equivalent to a magnetic dipole, the antenna is low in profile. A microstrip feed line is located between the two L-shaped strips to form a coplanar waveguide structure and excite the antenna. By carefully adjusting the gap between the feed line and the strips, the impedance bandwidth can be improved largely. A parametric study is performed to provide information for designing and optimizing such an antenna. A prototype is fabricated and measured. The simulated and measured results show that the impedance bandwidth for SWR less than 2 of the proposed antenna is 58.7% (1.95-3.57 GHz). Due to the complementary nature of the antenna, the proposed antenna has a unidirectional radiation pattern with low-polarization and low back-lobe radiation over the whole operating band. Furthermore, the gain of the antenna is stable across the entire bandwidth.

Citation


Jiao-Jiao Xie, Shengliang Deng, and Ying-Zeng Yin, "A Wideband Magneto-Electric Dipole Antenna Using CPW Structure," Progress In Electromagnetics Research C, Vol. 41, 217-226, 2013.
doi:10.2528/PIERC13050310
http://jpier.org/PIERC/pier.php?paper=13050310

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