Dual notched, high gain diversity antenna for wide band applications

Abstract

A compact microstrip line fed wide band MIMO antenna with high isolation, dual notch bands with high gain and low correlation coefficient is proposed in this article. These characteristics makes antenna superior for diversity applications. U‐shape slots are etched on radiating element and on feed line to achieve decent band rejection capability. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:1222–1226, 2017

Design and Analysis of a Compact Uwb-Mimo Antenna With Four Notched Bands

“…TH-like element, DGS, and Neutralization line were used for achieving isolation of −20 dB in [15], −15 dB in [16], and −22 dB isolation in [17], respectively. Without decoupling structure, MC is attenuated in [18] and [24]. However, the antenna in [24] had relatively large size and −12 dB isolation.…”

“…Without decoupling structure, MC is attenuated in [18] and [24]. However, the antenna in [24] had relatively large size and −12 dB isolation. To suppress MC, connected ground system was applied in four-port UWB-MIMO antenna in [19].…”

“…It is a big challenge to design a compact UWB-MIMO antenna which can be applied to portable wireless systems, as closely spaced radiators cause high mutual coupling. Some decoupling technologies have also been reported in [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32], such as a hybrid method of CSRR and ground stubs in [14], THlike parasitic structure in [15], defected ground structure (DGS) in [16], neutralization line in [17], polarization diversity in [18], connected ground system in [19], and multi-slot isolator in [20]. The UWB-MIMO antennas in [21][22][23][24][25][26][27][28][29][30][31][32] offered multiple NBs.…”

“…Some decoupling technologies have also been reported in [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32], such as a hybrid method of CSRR and ground stubs in [14], THlike parasitic structure in [15], defected ground structure (DGS) in [16], neutralization line in [17], polarization diversity in [18], connected ground system in [19], and multi-slot isolator in [20]. The UWB-MIMO antennas in [21][22][23][24][25][26][27][28][29][30][31][32] offered multiple NBs. In [21], an H-shaped slot was curved in ground plane to improve port isolation, and an open stub was etched on radiator to avoid 5.5 GHz band.…”

“…[23] adopted a T-shape ground stub as a decouple element and an L-shape strip to suppress 4.17 GHz band. Arranging two elements at a distance of λ/8, high isolation was obtained in [24]. Two U-shaped slots were used for two notches.…”