Abstract-This paper presents a novel miniaturized dual-band fractal antenna for WLAN/WiMAX applications. The miniaturization of the proposed antenna is achieved by inserting, in the center ground of the antenna, square slots to excite two resonant modes simultaneously, leading to dual-band operation. The novelty of the proposed antenna is miniaturized size and ability to support multiband operations, which can be integrated in many electronic applications and wireless communication. This antenna has a compact size of only 25 × 25 mm 2 and fed by a 50 Ω-microstrip feed line. To validate the design approach, an experimental prototype is fabricated and measured. The simulation and measurement results show that the antenna provides dual-band operation at 2.4 and 3.75 GHz with omnidirectional radiation pattern.

This paper presents a novel compact coplanar waveguide (CPW) monopole fractal-shaped antenna using fractal patch composed of hexagons with defected ground plane. Inclusion of a pair of S-shaped slots on the ground plane is used to  extend the antenna impedance bandwidth and to provide multiband operation. The antenna has a compact size of 35×35×1.27 mm3 which is compact. The antenna is designed, fabricated and measured. Good performances in terms of return loss, gain and radiation pattern are obtained in the  operating bands, which makes the proposed antenna a good  candidate for multiband wireless systems. The obtained results show that the antenna operates at Bluetooth,Worldwide Interoperability for Microwave Access (WiMAX), and Wireless Local Area Network (WLAN).

No abstract

No abstract

This paper is highly focused on the multiband application of the microstrip patch antenna. In first phase, rectangular microstrip antenna (RMSA) with a rectangular slot cut inside the rectangular patch at an appropriate position is simulated and analyzed. Then, the double (dual) slot had been embedded in the rectangular patch. Comparative analysis between these proposed structures and a simple microstrip patch antenna is done. Parameters as return loss and bandwidth are analyzed using FDTD algorithm in MATLAB. The use of multi slotted concept in rectangular patch antenna makes it flexible in terms of bandwidth control.