Miniaturized triple-band monopole antenna loaded with a via-less MTM for 3G, WIMAX, and WLAN applications

Abstract

In this paper, a tri-band metamaterial (MTM) loaded compact monopole antenna is proposed. In the first step of design procedure, a rectangular monopole antenna is improved by replacing the corresponding rectangular patch with a ring resonator. As a result, the first obtained operating frequency is decreased from 2.95 to 2.46 GHz. Then, this operating frequency is reduced to 2.02 GHz utilizing an MTM geometry in the antenna structure. The geometry parameters of the proposed antenna are optimized to provide the applicability for 3G, WLAN, and WiMAX applications. The impedance bandwidths of 600, 1080, and 220 MHz are obtained at 2.02–2.62, 3.48–4.56, and 5.12–5.34 GHz, respectively. Moreover, the equivalent circuit of the proposed antenna has been extracted. The proposed equivalent circuit model is validated through a comparison with corresponding simulation results. The proposed antenna is compact, low profile, via-less, and provides easy fabrication. Considering the first resonance frequency, a compactness of 32% is achieved in comparison to the corresponding unloaded monopole antenna.

Penta-band rectangular slot antenna for multi-function wireless communication with linear and circular polarizations

“…Kasmaei et al . [12] designed a tri-band antenna by using monopoles and metamaterials. The impedance bandwidths are 25.8, 26.8 and 4.2%, which can be used for 3G, WiMAX and WLAN.…”

“…With the development of communication systems, more and more multi-band antennas are used in modern communication equipments [1]. There are many ways to achieve multi-band operation such as adding resonators [2][3][4][5][6][7], using multi monopoles or dipoles [8][9][10][11][12][13], etching slots [14][15][16][17][18], and so forth.…”

“…The three monopoles worked together to generate three frequency bands, being useful for Bluetooth, 5G, and WLAN. Kasmaei et al [12] designed a tri-band antenna by using monopoles and metamaterials. The impedance bandwidths are 25.8, 26.8 and 4.2%, which can be used for 3G, WiMAX and WLAN.…”

Miniaturized tri‐wideband antenna loaded with metamaterial meander lines

“…9,10 On the contrary, based on the literature, sparse efforts have been made on miniaturized metamaterial-based triwideband antennas. [11][12][13][14][15][16][17][18] Furthermore, different designs for quad-band metamaterial-based antennas are introduced over the last few years. [19][20][21] Metamaterials have been proposed for a range of emerging applications such as metasurface, [22][23][24][25] electromagnetic filtering, 26,27 5 G beam steering, [28][29][30] antennasensor, [31][32][33] and artificial intelligence approaches.…”

“…Even though, most compact metamaterial multiband antennas reported are narrow‐band or dual‐band 9,10 . On the contrary, based on the literature, sparse efforts have been made on miniaturized metamaterial‐based tri‐wideband antennas 11–18 . Furthermore, different designs for quad‐band metamaterial‐based antennas are introduced over the last few years 19–21 …”