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Dual-band low-profile planar antenna for mobile communication application

Published online by Cambridge University Press:  08 December 2015

Xi-Wang Dai ,
Tao Zhou  and
Bo-Ran Guan
Xi-Wang Dai*
Affiliation:
School of Electronic Information, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, Peoples R China. Phone: +86-0571-86919150
Tao Zhou
Affiliation:
School of Electronic Information, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, Peoples R China. Phone: +86-0571-86919150
Bo-Ran Guan
Affiliation:
School of Electronic Information, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, Peoples R China. Phone: +86-0571-86919150
*
Corresponding author: X.-W. Dai Email: [email protected]
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Abstract

A novel dual-band planar antenna with a low profile for mobile communication system is proposed in this paper. The antenna is composed of one shorted patch with two radiating notches for low frequency resonance and one square patch for high frequency resonance. The low profile is achieved via the shorting patch, which introduces the parallel electrical field between the reflector and antenna. A step-impedance microstrip line is used to feed the antenna. The coupling between the square patch and microstrip line cancels out the inductance of shorting probe, which increases the working bandwidth of proposed antenna. A prototype with a low profile of 0.0286λ is fabricated and measured. The antenna achieves dual impedance bandwidths of 1.6% for the low frequency band and 60% for the high frequency band, covering the frequency range 851–865 MHz and 1.97–3.65 GHz, respectively. The measured results show good agreements with the simulated ones.

Keywords

Low profileShorted patchDual bandStep-impedance
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 2 , March 2017 , pp. 447 - 452
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

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