A Novel Low Cost Fractal Antenna Structure for ISM and WiMAX Applications

Abstract

Different fractal structures have been widely used in many antennas designs for various applications. A fractal antenna is used for miniaturization and multiband operation. This paper presents a design of a dual-band fractal antenna fed by coplanar waveguide (CPW) transmission line. The proposed antenna is designed and fabricated on an FR4 substrate with a volume of 70x60x1.6mm3, resonates at 2.42-2.62GHz and 3.40-3.65GHz with a return loss less than -10dB. The design and simulation process is carried out by using CST-MW studio electromagnetic solver. Simulation results show that the resulting antenna exhibits an interesting dual frequency resonant behavior making it suitable for dual band communication systems including the ISM and WiMAX applications. Concerning the fabrication and measurement of the final prototype of this antenna, a good agreement is found between simulation and measurement results for both frequency bands.

Wide to multiband elliptical monopole reconfigurable antenna for multimode systems applications

“…This is because these antennas give many benefits to improve the performance of RF front ends. Unlike conventional antennas [1][2][3][4][5][6][7][8] which has a fixed operating frequency or pattern types, reconfigurable antennas have the ability to varying its operating frequencies and also radiation pattern to satisfy the modern communication systems. Most of the antennas in [1][2][3][4] have a wideband operating frequency, using a mictrostrip patch antenna design to operate in Ultra-wide band (UWB) frequency range.…”

“…Most of the antennas in [1][2][3][4] have a wideband operating frequency, using a mictrostrip patch antenna design to operate in Ultra-wide band (UWB) frequency range. Meanwhile, reported antennas in [5][6][7][8] only can operate in multiband frequency. Despite of having compact size of antennas, they did not have the ability to control the operating frequencies compared to reconfigurable antennas.…”