CPW-Fed Koch Fractal Slot Antenna for WLAN/WiMAX Applications

Author

Krishna, Deepti Das ; Gopikrishna, M. ; Anandan, C.K. ; Mohanan, P. ; Vasudevan, K.

Author_Institution

Dept. of Electron., Cochin Univ. of Sci. & Technol., Cochin

Volume

7

fYear

2008

fDate

6/30/1905 12:00:00 AM

Firstpage

389

Lastpage

392

Abstract

A dual wide-band CPW-fed modified Koch fractal printed slot antenna, suitable for WLAN and WiMAX operations, is proposed in this paper. Here, the operating frequency of a triangular slot antenna is lowered by the Koch iteration technique resulting in a compact antenna. Studies on the impedance and radiation characteristics of the proposed antenna indicate that a modified Koch fractal slot antenna has an impedance bandwidth from 2.38 to 3.95 GHz and 4.95-6.05 GHz covering 2.4/5.2/5.8 GHz WLAN bands and the 2.5/3.5/5.5 GHz WiMAX bands. The antenna exhibits omnidirectional radiation coverage with a gain better than 2.0 dBi in the entire operating band. Empirical relations are deduced and compared with the results.

Keywords

WiMax; antenna feeds; antenna radiation patterns; broadband antennas; coplanar waveguides; fractal antennas; microstrip antennas; slot antennas; wireless LAN; Koch fractal printed slot antenna; Koch iteration; WiMax; coplanar waveguides; frequency 2.38 GHz to 3.95 GHz; frequency 4.95 GHz to 6.05 GHz; omnidirectional radiation; wideband antennas; wireless LAN; CPW-fed slot antenna; WLAN antennas; printed fractal slot antenna; wide-band antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2008.2000814

Filename

4531791