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Wideband dipole antenna using multi-mode resonance concept

Published online by Cambridge University Press:  12 October 2015

Wen-Jun Lu ,
Lei Zhu ,
Kam Weng Tam  and
Hong-Bo Zhu
Wen-Jun Lu*
Affiliation:
Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, People's Republic of China
Lei Zhu
Affiliation:
Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, People's Republic of China
Kam Weng Tam
Affiliation:
Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, People's Republic of China
Hong-Bo Zhu
Affiliation:
Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, People's Republic of China
*
Corresponding author: W.-J. Lu Email: wjlu@njupt.edu.cn
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Abstract

Wideband dipole antennas are proposed using the multi-mode resonance concept. By symmetrically introducing one-pair or two-pair of stubs at the nulls of current distribution of the second odd-order mode, two radiation modes are excited in a single, center-fed dipole resonator. Using these stubs, the second odd-order mode gradually moves down to its first counterpart, resulting to achieve a wideband radiation with two resonances. Prototype antennas are then fabricated to experimentally validate the design approach. Compared with a reference dipole with a bandwidth of 17%, the proposed dipole's bandwidth can be effectively increased to 49.7%.

Keywords

Dipole antennaDual-mode antennaMulti-mode resonanceWideband antenna
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 2 , March 2017 , pp. 365 - 371
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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