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Progress In Electromagnetics Research Letters
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WIDEBAND VERTICAL PLANAR PRINTED UNIDIRECTIONAL ANTENNA

By C. Wang, L. Chen, H. Wang, and X.-W. Shi

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Abstract:
A new wideband vertical planar printed unidirectional antenna is presented. The proposed antenna is composed of a bowtie electric dipole, a loop antenna and a microstrip-to-coplanar stripline balun. All of them are printed in the same plane perpendicular to the ground. The antenna has a wide impedance bandwidth of 87.2% for SWR≤2 from 3.3 to 8.4 GHz and a stable gain of 7.3±1.5 dBi over the operating frequencies. Moreover, stable unidirectional radiation pattern with low back-lobe radiation, low cross polarization and nearly identical E- and H-plane patterns is also demonstrated over the frequency of interest. A prototype is fabricated and measured. The measured results indicate that the antenna is suitable for wideband wireless communication system.

Citation:
C. Wang, L. Chen, H. Wang, and X.-W. Shi, "Wideband Vertical Planar Printed Unidirectional Antenna," Progress In Electromagnetics Research Letters, Vol. 47, 13-18, 2014.
doi:10.2528/PIERL14060701

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