Design of split ring antennas for WLAN and WiMAX applications

Abstract

This paper compares the design of two compact monopole antennas based on metamaterial inspired split ring structures. The effect of orientation of split axis to the direction of an incident EM wave is discussed. When the axis of the split is parallel to the direction of EM wave propagation, it results in a narrow band creation and when it is perpendicular, it leads to a notch frequency. Antenna 1 is intended for WLAN (2.4/5.2/5.8 GHz) application whereas antenna 2 operates on both WLAN and WiMAX (3.5 GHz) frequency bands. Both the antennas are printed on a 30 × 30 × 0.8 mm3 FR‐4 substrate with a partial ground plane and is fed by a microstrip line. The structures mainly differ in their split positions. Analysis of the split ring structures is also discussed. Prototype of the proposed structures are fabricated and the measured results comply greatly with the simulated results. The antenna has consistent radiation pattern over all the working region. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2117–2122, 2016

Compact triband slotted printed monopole antenna for WLAN and WiMAX applications

“…Nevertheless, the application of all these methodologies is still a challenging task and requires a lot of effort to get the desired results. A number of designs with different shapes have been proposed in References to satisfy the bandwidth requirements of WLAN/WiMAX applications. In Reference , a monopole antenna with two inverted L slots having its rectangular corners cut off has been presented.…”

“…However, the major problem is the large overall size of the antenna. Meandered monopole strips along with L shaped strips has been proposed in Reference , dual ring resonator with a fork‐shaped radiator has been employed in Reference and dual ring resonator in Reference to generate three resonances. CPW feed crescent‐shaped monopole antenna in Reference has been proposed for WLAN and WiMAX applications.…”

A miniaturized meandered printed monopole antenna for triband applications

“…Several versions of printed monopole antennas with slot structures, toothbrush patch structures, meandered structures, and metamaterials are reported in the literature for WLAN and WiMAX applications in Refs. . Slots are used in radiating structures and inside the ground plane .…”

“…[2,13] antennas based on split ring structures are presented in Ref. [18] and through loading of metamaterials in Refs. [19][20][21] are proposed for triband applications.…”

Metamaterial inspire multiband monopole antenna with defected ground structure

“…A pair of splitting resonators loaded on the sides of the feed has been observed in [2] later another pair of the antenna added, and a multiband behaviour of the antenna is observed. Raghavan et.al [3] proposed an antenna which is loaded with split ring resonator for WLAN and WiMAX applications. A measurement of dielectric constant is carried out by Jackson in [4].…”