GROUNDED COPLANAR WAVEGUIDE FED ULTRA WIDEBAND FRACTAL MONOPOLE ANTENNA

Year 2013, Volume: 3 Issue: 3, 603 - 606, 01.12.2013

Hosein Sagafi Robab Kazemi

Abstract

In this paper a compact and super wideband grounded
coplanar waveguide (GCPW) fed fractal monopole antenna is
presented. Antenna size is significantly reduced as compared to the
simple polygonal antenna and size of proposed antenna is
25×30×1.524 mm3. The octagonal fractal antenna is fabricated on
Rogers RO4003C with εr=3.38. The base structure of antenna is
consist of an octagonal that a circle is cut from it. Five iterations of
base shape are performed. Overall fractal geometry appears as a central
octagonal array surrounded by concentric scaled octagonal arrays. 50Ω
GCPW structure is used for feeding. Antenna is analyzed over 2- 12GHz frequency range. S11, gain plots and radiation patterns
comparison is made in this work. The antenna shows better than 13 dB
return loss and peak gain 5±2 dB over FCC UWB from 3.1 to 10.6
GHz.

Keywords

Grounded Coplanar waveguide, fractal, octagonal, monopole, UWB

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