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International Journal of Antennas and Propagation
Volume 2017, Article ID 3595620, 7 pages
Research Article

Wideband Circularly Polarized Spidron Fractal Slot Antenna with an Embedded Patch

1Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, Republic of Korea
2School of Electronic and Electrical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea

Correspondence should be addressed to Keum Cheol Hwang; ude.ukks@gnawhk

Received 5 March 2017; Accepted 10 April 2017; Published 27 April 2017

Academic Editor: N. Nasimuddin

Copyright © 2017 Amir Altaf et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In this communication, a wideband circularly polarized (CP) Spidron fractal microstrip antenna is proposed based on the concept of embedded structures. The proposed antenna is excited by a tapered microstrip feedline. A wide 3 dB axial ratio (AR) bandwidth of 28.81% (3.09–4.13 GHz) is obtained by merging the CP bands of the Spidron fractal slot and patch antennas. In addition, a measured −10 dB reflection bandwidth of 47.25% (2.57–4.16 GHz) is reported. The measured results are in reasonable concurrence with the simulated results. The measured gain varies between 2.12 dBic and 3.56 dBic within the AR bandwidth.