Compact Modified Swastika Shape Patch Antenna for WLAN/WiMAX Applications

Abstract

A compact simple structure modified Swastika shape multiband patch antenna is designed and investigated. The antenna, which occupies an overall dimension of 0.305 × 0.305 × 0.012 at lower frequency, has a simple structure which comprises of a planar wide square slot in the ground with four slits and Swastika shape radiation patch with a rectangular slot. The proposed Swastika shape antenna was designed and analyzed by using a finite element method based high frequency structural simulator HFSS. The experimental and numerical results exhibit that the antenna operates over the frequency ranges 950 MHz (2.28-3.23 GHz), 660 MHz (3.28-3.94 GHz), and 1120 MHz (5.05-6.17 GHz) suitable for WLAN (2.4/5.2/5.8 GHz) and WiMAX 2.5/3.5/5.5 GHz applications. It has a good omnidirectional radiation pattern and reaches 3.97 dBi at 2.44 GHz, 4.04 dBi at 3.5 GHz, and 3.25 dBi at the band of 5.98 GHz. A prototype is fabricated and then measured. The experimental and simulation results show good impedance bandwidth, radiation pattern, and stable gain across the operating bands.

A metamaterial hepta‐band antenna for wireless applications with specific absorption rate reduction

“…Metamaterial SRR/CSRR loading approach have been introduced to obtain multiband characteristics in antenna design . A microstrip patch antenna with slot and defected ground configuration is demonstrated for GPS/WLAN/WiMAX applications . A multiband rectangular dielectric resonator antenna is designed and implemented to support wireless standards …”

Double U-Slot Microstrip Patch Antenna for WLAN and WiMAX Applications

“…WLAN is very important and popular for accessing the internet in many countries. 2.4 GHz (2.40 GHz to 2.48 GHz), 5.2 GHz (5.15 GHz to 5.35 GHz) and 5.8 GHz (5.72 GHz to 5.82 GHz) are the bands used for WLAN applications and 2.5 GHz (2.5-2.69 GHZ), 3.5 GHz (3.4-3.69 GHz) and 5.5 GHz (5.25-5.85 GHz) are the three WiMAX licensed spectrum profile [2]. WiMAX is mainly used for residential or home and broadband internet access, medium and small size business, WiFi hotspots, and fixed and portable wireless broadband connectivity which do not need the direct line-ofsight (LOS) along with a base station.…”

A Novel Compact Planar Triple-Band Monopole Antenna for Wlan/Wimax Applications

“…So, a triple-band antenna is required. Many multi-band antennas [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] and ultra-wideband (UWB) antennas [16] have been proposed. In [1], the antenna consists of three "ears" type strips, and three bands can be created by the three "ears".…”

“…Triple-band CPW-fed antennas with three pairs of inverted-L strips and asymmetric ring are presented in [6,7], respectively. Dual-and triple-band slot antennas are proposed in [8,9], and literature [10] reports a modified swastika shape patch antenna. Multi-band monopole antennas have been widely investigated in [11][12][13][14][15][16].…”

“…Three bands covering 2.3-2.75, 3.38-3.7, and 4.91-6.28 GHz are obtained, which cover the 2.5/3.5/5.5 GHz WiMAX and 2.4/5.2/5.8 GHz WLAN bands. The structure of the proposed antenna is much simpler than those presented in [1][2][3][4][5][6][7][8][9][10][11][12]. Also, this antenna exhibits higher gain than the one proposed in [3].…”