Inverted L-slot triple-band antenna with defected ground structure for WLAN and WiMAX applications

Abstract

To incorporate two different communication standards in a single device, a compact triple-band antenna is proposed in this paper. The proposed antenna is formed by etching an inverted L-shaped slot on the patch with defected ground structure. The antenna is targeted to excite three separate bands first from 2.39–2.51, second from 3.15–3.91, and third from 4.91–6.08 GHz that covers entire Wireless Local Area Network (WLAN) (2.4/5.2/5.8 GHz) and Worldwide Interoperability for Microwave Access (WiMAX) (2.5/3.5/5.5) bands. Thus, the proposed antenna provides feasibility to integrate WLAN and WiMAX communication standards in a single device with good radiation pattern quality. Furthermore, a prototype of the proposed antenna fabricated and measured to validate the design, shows a good agreement between simulated and measured results. The simulation and measurement results show that the designed antenna is capable of operating over the 2.39–2.51 GHz, 3.15–3.91 GHz, and 4.91–6.08 GHz frequency bands while rejecting frequency ranges between these three bands. The proposed antenna offers a compact size of 20 × 30 mm2 as compared with earlier reported papers.

Low-Profile Frequency Reconfigurable Antenna for Heterogeneous Wireless Systems

“…One of the important components of the transceiver is antenna. The antenna being an important component of the transceiver occupies a major portion of the system [2,3]. The size increases further by incorporating any tuning mechanism in it.…”

A Compact Printed Monopole Antenna for WiMAX/WLAN and UWB Applications

“…Asymmetric coplanar branches have also been used for WLAN applications [10]. In addition, the use of planar inverted F antennas combined with parasitic elements combined with parasitic elements has been proposed for WLAN operation [11], an inverted L-slot triple-band antenna [12] and a CPW-fed tri-band printed antenna has been developed [13].…”

A Compact Triangular Slot Array Multiband Antenna for Wireless Applications

“…In order to better achieve the multiband and miniaturization, many technologies have been studied, such as coupling feed technology [7][8][9], slot loaded technology [10][11], loading the matching network [12], and loading printed distributed inductance technology [13] and fractal technology [14]. Inverted L-slot patch with a defected ground plane is used for triple-band operation in [15], whereas three circular-arc-shaped strips whose whole geometry looks like "ear"-type antenna are reported to cover the desirable bands for WLAN/WiMAX wireless communication terminal in [16]. An asymmetric M-shaped patch is used to design a triple-band antenna, and vias on the longer arm of the patch are used for the purpose of compactness [17].…”