Compact Broadband Antenna with Vicsek Fractal Slots for WLAN and WiMAX Applications

Abstract

This paper aims to design a compact broadband antenna for wireless local area network (WLAN) and worldwide interoperability for microwave access (WIMAX) applications. The suggested antenna consists of an octagonal radiator with Vicsek fractal slots and a partial ground plane, it is printed on FR-4 dielectric substrate, and its global dimension is 50 × 50 × 1.6 mm3. The antenna is designed and constructed using both CST MICROWAVE STUDIO® and CADFEKO electromagnetic solver, and in order to validate the acquired simulation results, the antenna is manufactured and tested using vector network analyzer E5071C. The measurement results show that the designed antenna attains a broadband bandwidth (S11 <−10 dB) from 2.48 to 6.7 GHz resonating at 3.6 and 5.3 GHz, respectively. The broadband bandwidth covers the two required bands: WiMAX at the frequencies 2.3/2.5/3.3/3.5/5/5.5 GHz and WLAN at the frequencies 3.6/2.4–2.5/4.9–5.9 GHz. In addition, the suggested antenna provides good gains of 2.78 dB and 5.32 dB, omnidirectional measured radiation patterns in the E-plane and the H-plane and high efficiencies of 88.5% and 84.6% at the resonant frequencies. A close agreement of about 90% between simulation and measurement results is noticed.

A Miniaturized Tri-Wideband Sierpinski Hexagonal-Shaped Fractal Antenna for Wireless Communication Applications

“…For wireless communication applications, a number of multiband antenna designs using rigorous approaches have been published in the literature, including the usage of slots in the radiator or in the ground plane and fractal and metamaterial constructions [1][2][3][4][5][6][7].…”

Resonant Frequency Analysis using Perturbation and Resonant Cavity Method in Printed Dual Band Antenna for WiMAX Application

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. In addition, coplanar waveguide-fed microstrips, Minkowski-Sierpinski carpet fractal constructed, complementary split-ring resonator-based, meander line slotted antennas, and Vicsek Fractal slotted antennas are reported in [16][17][18][19][20][21][22][23][24][25][26].…”

Design and Analysis of the Hexagonal-Shaped Antenna with Multi-Band Feature for WLAN, WiMAX, and LTE Applications

“…With the fast growth of new communication systems, such as radio-frequency identification (RFID), worldwide interoperability for microwave access (WiMAX), and wireless local area network (WLAN) have been mainly employed as key components [6]. There is a good demand for antennas with the capability of providing a great impedance bandwidth (BW) and planar geometry for WiMAX, WLAN, and RFID applications in numerous bands, such as 2.3/2.5/3.3/5/5.5 GHz and 2.4/3.6/4.9-5.9 GHz, respectively [7]. The feed lines and patches usually are photo etched on the dielectric substrate.…”