Compact fifth iteration fractal antenna for UWB applications


  • B. Premalatha CMR College of Engineering & Technology, Hyderabad, India
  • P. Raveendra Babu CMR College of Engineering & Technology, Hyderabad, India
  • G. Srikanth CMR Technical Campus, Hyderabad, India



fractal antenna, patch antenna, ultrawideband application, UWB, wideband wireless technology


This paper presents a compact fractal antenna operating in the frequency range of 3.1–10.6 GHz that is designed, simulated and tested for UWB application. In the present days, the broadband wireless technology gained popularity due to its large bandwidth, high data rate and low complexity. In 2002 the Federal Communication Commission (FCC) allocated a frequency band of 3.1–10.6 GHz (UWB) for commercial applications. The antenna having the dimensions of 28×28 mm2 with circular patch printed on the RT/Duroid 5880 substrate having the height of 1.57 mm with the dielectric constant of 2.2 is discussed. In the circular patch, circular fractals are made up to the fifth iteration. The dimensions of the circular fractals are identified by using the Descartes theorem. The antenna with optimum dimensions is simulated by using the CST microwave studio and it is tested for its performance. The following antenna performance parameters are calculated: return losses S11, VSWR, radiation patterns, gain, and group delay. This antenna is fabricated and tested for its performance, and the measured results are noted. The comparison of simulated and measured results indicate that they are in line.


N. Cohen, “Fractal antenna applications in wireless telecommunications,” in Professional Program Proceedings. Electronic Industries Forum of New England, 1997, pp. 43–49, doi:

D. Li, J.-F. Mao, “Sierpinskized Koch-like sided multifractal dipole antenna,” Prog. Electromagn. Res., vol. 130, pp. 207–224, 2012, doi:

D. H. Wqrner, S. Ganguly, “An overview of fractal antenna engineering research,” IEEE Antennas Propag. Mag., vol. 45, no. 1, pp. 38–57, 2003, doi:

S. K. Terlapu, C. Jaya, G. S. Raju, “On the notch band characteristics of Koch fractal antenna for UWB applications,” Int. J. Control Theory Appl., vol. 10, no. 6, pp. 701–707, 2017, uri:

M. A. Dorostkar, M. T. Islam, R. Azim, “Design of a novel super wide band circular-hexagonal fractal antenna,” Prog. Electromagn. Res., vol. 139, pp. 229–245, 2013, doi:

V. Waladi, N. Mohammadi, Y. Zehforoosh, A. Habashi, J. Nourinia, “A novel modified star-triangular fractal (MSTF) monopole antenna for super-wideband applications,” IEEE Antennas Wirel. Propag. Lett., vol. 12, pp. 651–654, 2013, doi:

B. Premalatha, M. V. S. Prasad, M. B. R. Murthy, “Multi-band notched antennas for UWB applications,” Radioelectron. Commun. Syst., vol. 62, no. 12, pp. 609–618, 2019, doi:

E. Rufus, C. A. Zachariah, B. J. Lokesh, “Design of fractal antenna for UWB applications,” J. Theor. Appl. Inf. Technol., vol. 64, no. 2, pp. 293–297, 2014, uri:

K. Srivastava, R. Kumar, P. Gupta, A. Tiwari, R. Saini, “On the design of Descartes circle theorem based circular fractal antenna for UWB applications,” Int. J. Microw. Opt. Technol., vol. 7, no. 3, p. 0, 2012.

N. Kaur, A. Kaur, “A Compact plus shaped carpet fractal antenna with an I-shaped DGS for C-band/X-band/UWB/WIBAN applications,” Wirel. Pers. Commun., vol. 109, no. 3, pp. 1673–1687, 2019, doi:

J. A. Tirado-Mendez, D. Martinez-Lara, H. Jardon-Aguilar, R. Flores-Leal, E. A. Andrade-Gonzalez, “Inscribed Fibonacci circle fractal in a circular radiator for ultra-wideband antenna operation and size reduction,” Int. J. Antennas Propag., vol. 2019, pp. 1–8, 2019, doi:

W.-C. Weng, C.-L. Hung, “An H-fractal antenna for multiband applications,” IEEE Antennas Wirel. Propag. Lett., vol. 13, pp. 1705–1708, 2014, doi:

R. Chauhan, S. Gupta, “A circular fractal antenna array,” in 2019 National Conference on Communications (NCC), 2019, pp. 1–6, doi:

A. Dastranj, F. Ranjbar, M. Bornapour, “A new compact circular shape fractal antenna for broadband wireless communication applications,” Prog. Electromagn. Res. C, vol. 93, pp. 19–28, 2019, doi:

Fabricated fifth iteration antenna





Research Articles