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Compact dual-band antennas with large frequency ratio and bandwidth enhancement for wireless applications

Published online by Cambridge University Press:  21 December 2016

Abdelheq Boukarkar ,
Xian Qi Lin  and
Yuan Jiang
Abdelheq Boukarkar
Affiliation:
School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Xian Qi Lin*
Affiliation:
School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Yuan Jiang
Affiliation:
School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
*
Corresponding author: X.Q. Lin, Email: xqlin@uestc.edu.cn
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Abstract

In this paper, compact single-feed dual-band antennas for different wireless applications are proposed. First, a dual-band antenna with a comparatively large frequency ratio of 2.58 is designed. Then, a novel dual-band antenna is introduced in order to enhance the upper frequency band. The technique consists of modifying the feed line structure, which leads to a 9.23% of impedance bandwidth at the central frequency of 6.5 GHz instead of 2.06%. The designed antennas are fabricated and tested in the laboratory and in a small anechoic chamber in order to measure their reflection coefficient, gains, and efficiencies. Good agreement between simulated and measured results is obtained. The designed antennas are particular because they have low profile, very simple single-feed technique, can be designed for large frequency ratios, and also the bandwidth can be clearly enhanced. Therefore, they can be used for different wireless applications.

Keywords

Antennas and propagation for wireless systemsAntenna designModeling and measurements
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 5 , June 2017 , pp. 1131 - 1138
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

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