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UWB MIMO antenna with common radiator

Published online by Cambridge University Press:  07 March 2016

Garima Srivastava ,
B. K. Kanuijia  and
Rajeev Paulus
Garima Srivastava*
Affiliation:
Department of Electronics and Communication Engineering, Ambedkar Institute of Advanced Communication Technologies and Research, Delhi, India. Phone: +911122048047
B. K. Kanuijia
Affiliation:
Department of Electronics and Communication Engineering, Ambedkar Institute of Advanced Communication Technologies and Research, Delhi, India. Phone: +911122048047
Rajeev Paulus
Affiliation:
Department of Electronics & Communication Engineering, Sam Higginbottom Institute of Agriculture, Technology and Science, Allahabad, India
*
Corresponding author:G. Srivastava Email: garima.srivastava.aiactr@gmail.com
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Abstract

A compact printed 2 × 2 ultrawideband (UWB) multiple input multiple output (MIMO) antenna with a single circular patch as a common radiator for both the antenna elements is presented in this paper. A single circular patch is excited by two tapered CPW feeds for dual polarization. To improve the isolation between two ports, a rectangular slot of dimension L1 × W1 is created in the radiator. The UWB MIMO antenna has impedance bandwidth of 3–12 GHz with a isolation better than 17 dB between the two ports. The envelope correlation coefficient and the capacity loss are evaluated to ensure the good diversity performance of UWB MIMO antenna. The antenna has a compact size of 45 × 45 mm2 and is fabricated on low cost FR4 substrate and measured using Agilent VNA. The simulated and measured results show that the proposed UWB antenna is good candidate for UWB MIMO applications.

Keywords

UWB MIMO antennaEnvelope correlation coefficientCapacity loss
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 3 , April 2017 , pp. 573 - 580
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

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