Author(s)

S. Jagadeesha, R. M. Vani, P. V. Hunagund

Department of PG Studies and Research in Applied electronics, Gulbarga University, Gulbarga, India.
S.D.M. Institute of Technology, Ujire Mangalore, India.
University Science Instrumentation Center, Gulbarga University, Gulbarga, India.

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 €r = 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.

Fractal Antenna; Multi Frequency; Size Reduction; Wireless Application; Plus shape Antenna; Slotted Antenna

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.