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Broadband multi-layer antenna with improved design for the applications of perfect impedance matching

Published online by Cambridge University Press:  22 July 2014

Mahmoud Abdipour ,
Saba Kazemi Alishahi  and
Kambiz Noormohammadi
Mahmoud Abdipour*
Affiliation:
Department of Electrical Engineering, Young Researcher Club, Arak Branch, Islamic Azad University, Arak, Iran
Saba Kazemi Alishahi
Affiliation:
Department of Electrical and Computer Engineering, Harsin Branch, Islamic Azad University, Kermanshah, Iran
Kambiz Noormohammadi
Affiliation:
Department of Electrical Engineering, Young Researcher Club, Arak Branch, Islamic Azad University, Arak, Iran
*
Corresponding author: M. Abdipour Email: [email protected]
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Abstract

In this paper, the design of a broadband multi-layer microstrip antenna is presented. The broadband characteristics are the results of coupled resonances of the patch and transmission line through the resonant aperture. For this purpose, a cross-shaped transmission line, a ring slot, and a shaped ring patch are used. The simulation and measurement results indicate that a wide impedance bandwidth of 70% for |S11| < −10 dB and a perfect impedance matching 35% for |S11| < −20 dB are achieved. The gain is stable over the impedance bandwidth. The maximum gain of the proposed antenna is 8.8 dBi at 5 GHz. The radiation pattern, radiation efficiency, and cross-polarization are also suitable throughout the impedance bandwidth.

Keywords

Multi-layer antennaBroad bandwidthPerfect impedance matching
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 7 , Issue 6 , December 2015 , pp. 747 - 752
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2014 

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References

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