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Compact Wideband Folded Dipole Antenna With Multi-Resonant Modes

Hu, Wei, Liu, Xuekang, Gao, Steven, Wen, Le-Hu, Luo, Qi, Fei, Peng, Yin, Yingzeng, Liu, Ying (2019) Compact Wideband Folded Dipole Antenna With Multi-Resonant Modes. IEEE Transactions on Antennas and Propagation, . ISSN 0018-926X. (doi:10.1109/TAP.2019.2925188) (KAR id:74373)

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Abstract

A compact and wideband folded dipole antenna with multi-resonant modes is presented in this paper. Three resonant modes are obtained by using a modified planar folded dipole and its coupled feeding structure. Incorporating with the shorting pins and parasitic patches, multiple resonant modes in the antenna are manipulated, shifted, and then combined for increasing the impedance bandwidth. Using this concept, a prototype of multi-mode folded dipole is designed, fabricated, and measured. The experimental results show that the proposed antenna achieves a bandwidth of 80% from 1.57 GHz to 3.68 GHz, while occupying a compact size of 0.3λ0×0.15λ0×0.05λ0 (λ0 is the wavelength in free space at the lowest operating frequency). Furthermore, a simple and effective design to achieve good omnidirectional radiation performance is developed by placing two proposed folded dipoles back to back. The antenna exhibits a flat gain variation of less than 1.27 dB over a broad bandwidth (82%) in the horizontal plane. Such a compact, wideband, planar antenna is a promising candidate for indoor signal coverage, wireless access points, and micro base stations in 2G/3G/4G/5G and WLAN/WiMAX wireless comminution systems.

Item Type: Article
DOI/Identification number: 10.1109/TAP.2019.2925188
Uncontrolled keywords: Folded dipole antenna, multi-resonant modes, omnidirectional radiation, wide bandwidth
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Steven Gao
Date Deposited: 12 Jun 2019 14:24 UTC
Last Modified: 16 Feb 2021 14:05 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/74373 (The current URI for this page, for reference purposes)
Gao, Steven: https://orcid.org/0000-0002-7402-9223
Wen, Le-Hu: https://orcid.org/0000-0001-9757-1114
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