MODIFIED SIERPINSKI CARPET FRACTAL ANTENNA FOR WIRELESS COMMUNICATION

Abstract

-A compact fractal antenna based on the Sierpinski
Carpet is proposed and designed in this paper. The paper illustrates
the design optimization of the modified fractal antenna up to second
order iteration for multiband characteristics. The antenna is fed by
coaxial feed. The design is obtained at the center frequency 2GHz.
The designs are simulated for various locations of coaxial feed.
Moreover the effect of cutting slots in modified Sierpinski Carpet is
observed. The enhancement in the operating bands is observed in
the proposed design. Operating frequency bands are adjusted by
variations in design parameters. Multiband functionality is
observed in first and the second order iteration of the design
presented in this paper. By alterations in the design parameters of
this antenna various operating frequencies are achieved which are
applicable to more than one application. Gain and Directivity are
stabilized to large extent. Improvement in the return loss and
VSWR is observed .These antenna designs are thoroughly
simulated on FR-4 substrate with loss tangent 0.025 and dielectric
constant 4.3 and analyzed using Computer Simulation Technology
Microwave Studio-2012. These designs are applicable to Personal
communication System, Satellite Communication and Navigation
System, Mobile, WLAN, Wi-Max, Wi-Fi, Bluetooth ,Radio
Navigation i.e. L-band, S-band and C-band applications.