ABSTRACT Fractal antennas are characterized by space filling and self-similarity properties which results in considerable size reduction and multiband operation as compared to conventional microstrip antenna. This paper outlines a multiband antenna design based on fractal concepts. Fractal antennas show multiband behavior due to self-similarity in their structure. The plus shaped fractal antenna has been designed on a substrate of dielectric constant � = 4.4 and thickness 1.6mm. The proposed antenna is characterized by a compact size and it is microstrip feed fractal patch of order 1/3. It is observed that the antenna is radiating at multiple resonant frequencies. The resonant frequency is reduced from 2.2 GHz to 900 MHz after I & II iterations respectively. Thus considerable size reduction of 81.77% & overall bandwidth of 12.92% are achieved. The proposed antenna is simulated using the method of moment based commercial software (IE3D) and it is found that simulated results are in good agreement with the experimental results.
Cite this paper
S. Jagadeesha, R. Vani and P. Hunagund, "Plus Shape Slotted Fractal Antenna for Wireless Applications," Wireless Engineering and Technology, Vol. 3 No. 3, 2012, pp. 175-180. doi: 10.4236/wet.2012.33025.
 K. Sing, V. Grewal and R. Saxena, “Fractal Antennas: A Novel Miniaturization Technique for Wireless Communications,” International Journal of Recent Trends in Engineering, Vol. 2, No. 5, 2009, pp. 172-176.
 B. Mandelbrot, “Fractal: Form, Chance and Dimension,” W. H, Freeman and Company, San Francisco, 1997.
 H. O. Peitgzen, H. Jurgens and D. Sanpe, “Chaos and Fractals,” New Frontiers in Science, Springer-Verlag, New York, 1992.
 C. Punete, J. Romen, R. Pous, X. Garkia and F. Beitez, “Fractal Multiband Antenna Based on the Serpinski Gasket,” Electronics Letters, Vol. 32, No. 1, 1996, pp. 1-2.
 J. P. Gianvittorio and Y. Rahmat-Sami, “Fractal Antennas: Novel Antenna: A Novel Antenna Miniaturization Technique and Applications,” IEEE Antenna and Propagation Magazine, Vol. 44, No. 1, 2002, pp. 20-36.
 D. H. Werner and S. Ganguly “An Overview of Fractal Antenna Engineering Research,” IEEE Antenna and Propagation Magazine, Vol. 45, No. 1, 2003, pp. 38-57.
 G. Srivatsun, S. S. Rani and G. S. Krishnan, “A Self-Similar Fractal Cantor Antennas for MICS Based Wireless Applications,” Wireless Engineering Technology, Vol. 2, No. 2, 2011, pp. 107-111.
 W. Shalan and K. Pahwa, “Multiband Microstrip Rectangular Fractal Antenna for Wireless Applications,” International Journal of Electronics Engineering, Vol. 3, No. 1, 2011, pp. 103-106.
 F. J. Jibrael and M. H. Hammed, “A New Multiband Patch Microstrip Plusses Fractal Antenna for Wireless Applications,” ARPN Journal of Engineering and Applied Sciences, Vol. 5, No. 8, 2010, pp. 155-158.