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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2016-04-09
Planar Arrangement of Modified Concentric Rings with Defected Ground for Mobile and Wireless Communication Systems
By
Neelam Choudhary,

    Dr. Neelam Choudhary

    Department of Physics

    University of Rajasthan

    India

    Homepage

Ajay Tiwari,

    Dr. Ajay Tiwari

    Department of Physics

    University of Rajasthan

    India

    Homepage

Jaswant Singh Saini,

    Dr. Jaswant Singh Saini

    Department of Physics

    University of Rajasthan

    India

    Homepage

Virender Kumar Saxena,

    Dr. Virender Kumar Saxena

    Department of Physics

    University of Rajasthan

    India

    Homepage

Deepak Bhatnagar

    Dr. Deepak Bhatnagar

    University of Rajasthan

    India

    Homepage

Progress In Electromagnetics Research M, Vol. 47, 161-169, 2016
doi:10.2528/PIERM16012401 | Google Scholar

Abstract
This paper reports the design and performance of a compact planar arrangement of concentric rings designed with defected ground plane. The radiating circular patch and ground plane of antenna are modified in several steps to achieve a broadband circularly polarized antenna. In each stage of modification, antenna is simulated by applying CST Microwave Studio simulator, and finally, a prototype is developed and tested in free space. The developed prototype efficiently operates at frequencies 2.34 GHz and 4.41 GHz, and provides an overall impedance bandwidth close to 2.31 GHz or 67.45% with respect to central frequency 3.425 GHz. This antenna provides nearly flat gain in the desired frequency band with maximum measured gain close to 2.94 dBi at frequency 3.02 GHz. It also provides circularly polarized radiations in the frequency bands extended from 2.67 to 3.05 GHz and 3.44 to 3.57 GHz. The co-polar and cross-polar radiation patterns of the antenna in azimuth and elevation planes are obtained at frequencies 2.316 GHz and 4.41 GHz. The proposed antenna can be used for mobile and lower bands of Wi-Max and UWB communication systems.
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Citation
Neelam Choudhary, Ajay Tiwari, Jaswant Singh Saini, Virender Kumar Saxena, and Deepak Bhatnagar, "Planar Arrangement of Modified Concentric Rings with Defected Ground for Mobile and Wireless Communication Systems," Progress In Electromagnetics Research M, Vol. 47, 161-169, 2016.
doi:10.2528/PIERM16012401
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