On the design of ultra wide band antenna based on fractal geometry

Author

Kumar, Raj ; Bansode, Pranoti

Author_Institution

Dept. of Electron. Eng., Deemed Univ., Pune, India

fYear

2010

fDate

13-15 Dec. 2010

Firstpage

1

Lastpage

5

Abstract

This paper presents ultra wide band circular fractal antenna. The antenna has been fed with coplanar waveguide (CPW) feed. This fractal antenna has been designed and fabricated on FR4 substrate ε_r = 4.3 and thickness h = 1.53 mm with initial diameter of solid circular disc 15 mm. The experimental result of circular fractal antenna exhibits the ultra wide band (UWB) characteristic from 3.295 GHz to 13.365 GHz corresponds 120.88 % impedance bandwidth. The first resonant frequency of fractal antenna shifted to 3.75 GHz in comparison to first resonant frequency 4.31 GHz of conventional simple circular disc monopole antenna. This indicates the size reduction of antenna. The measured radiation pattern of this fractal antenna is nearly omnidirectional in azimuth plane throughout the band. This type of antenna can be useful for UWB system and sensing applications.

Keywords

antenna feeds; antenna radiation patterns; coplanar waveguides; electric impedance; fractal antennas; fractals; geometry; omnidirectional antennas; ultra wideband antennas; CPW feed; FR4 substrate; UWB system; azimuth plane; circular disc monopole antenna; coplanar waveguide; fractal geometry; frequency 3.295 GHz to 13.365 GHz; impedance bandwidth; omnidirectional antenna; radiation pattern; resonant frequency; sensing application; size reduction; solid circular disc; ultra wide band circular fractal antenna; Antenna radiation patterns; Fractal antennas; Microstrip; Microstrip antennas; Microwave antennas; Ultra wideband antennas; Circular microstrip antenna; Monopole antenna; Multi-band antenna; Resonant frequency and CPW-feed; UWB fractal antenna; multiband;

fLanguage

English

Publisher

ieee

Conference_Titel

Kaleidoscope: Beyond the Internet? - Innovations for Future Networks and Services, 2010 ITU-T

Conference_Location

Pune

Print_ISBN

978-1-4244-8272-6

Electronic_ISBN

978-92-61-13171-5

Type

conf

Filename

5682121