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Omnidirectional multi-band stacked microstrip patch antenna with wide impedance bandwidth and suppressed cross-polarization

Published online by Cambridge University Press:  24 February 2016

Jaishanker Prasad Keshari ,
Binod Kumar Kanaujia ,
Mukesh Kumar Khandelwal ,
Pritam Singh Bakariya  and
Ram Mohan Mehra
Jaishanker Prasad Keshari*
Affiliation:
Department of Electronics and Communication Engineering, Sharda University Greater Noida UP, India
Binod Kumar Kanaujia
Affiliation:
Department of Electronics and Communication Engineering, Ambedkar Institute of Advanced Communication Technologies and Research, Geeta Colony, Delhi 110031, India
Mukesh Kumar Khandelwal
Affiliation:
Department of Electronics Engineering, Indian School of Mines, Dhanbad 826001, India
Pritam Singh Bakariya
Affiliation:
Department of Electronics Engineering, Indian School of Mines, Dhanbad 826001, India
Ram Mohan Mehra
Affiliation:
Department of Electronics and Communication Engineering, Sharda University Greater Noida UP, India
*
Corresponding author: J. P. Keshari Email: jaishanker_keshari@yahoo.co.in
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Abstract

In this paper, triple-band stacked microstrip patch antennas (MPAs) are presented with wide impedance bandwidth and suppressed cross-polarization level. Triangular and circular shaped slots are embedded in the patch of antenna. Slot-loaded microstrip patches are fed with meandered microstrip line supported by a semi-ground plane structure. Triangular shaped slot-loaded MPA shows triple resonance at frequencies 2.2, 4.45, and 5.3 GHz having bandwidth of 45.9, 19.23, and 15.67%, respectively. Circular shaped slot-loaded MPA also shows triple resonance at frequencies 2.2, 4.42, and 5.38 GHz having bandwidth of 50.24, 33.21, and 13.43%, respectively. Using circular slot in place of triangular; bandwidth of the first and the second band is improved by 4.34 and 13.98%, respectively. Both the proposed antennas show an omnidirectional radiation pattern at all three resonance frequencies in the xz-plane with almost 0 dBi gain. Both the proposed antennas are fabricated on a FR-4 epoxy substrate and show a minimum level of cross-polarization radiations.

Keywords

AntennaCross-polarization suppressionMulti-bandOmnidirectional antennaStacked antennaTriple bandWide band
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 3 , April 2017 , pp. 629 - 638
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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