Wideband Low-Profile Highly Isolated MIMO Antenna With Artificial Magnetic Conductor

Zhu, Jianfeng; Li, Shufang; Liao, Shaowei; Xue, Quan

doi:10.1109/lawp.2018.2795018

Cited by 72 publications

(70 citation statements)

References 20 publications

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“…In previous studies, the traditional SRR [27] arrays have been used in MIMO antenna design to solve the decoupling problem [19][20][21][22]. The SRR array has been used as an effective medium with negative permeability properties in a narrow bandwidth, while in the present study, the size of the proposed antenna is so small that it cannot offer enough space for the metamaterial array.…”

Section: Isolator Designmentioning

confidence: 91%

Compact Uwb Mimo Antenna With Metamaterial-Inspired Isolator

Wang¹,

Duan²,

Li³

et al. 2018

PIER C

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In this paper, a dual-band complementary split ring resonator (C-SRR) is used to improve the band-notch effect relative to the traditional SRR. Meanwhile, we employ a brand-new SRR unit cell as an isolator for decoupling among multiple bands without enlarging the dimensions of the multiple-input-multiple-output (MIMO) antenna. Therefore, a compact ultra-wideband MIMO antenna is developed. Compared with the previous work, the proposed MIMO antenna also has obvious advantages such as high isolation and miniaturization (the dimensions are only 13.5 mm × 34 mm). The metamaterial-inspired UWB MIMO antenna presented here is suitable for small scaled mobile devices. 1. INTRODUCTION With the rapid development of wireless communications and the demands for high transmission rate and stable transmission quality, multiple-input-multiple-output (MIMO) technology has been widely employed [1, 2]. MIMO antennas use multiple antenna elements for transmitting and receiving signals in the wireless communication systems. The MIMO technology can improve the capacity of the communication system and the utilization ratio of the spectrum without increasing the transmitting power. Ultra-wideband (UWB) technology is used for short range wireless communication among multiple devices. UWB systems operate under a low power level (41.3 dBm/MHz) within a wide operation band (3.1 GHz-10.6 GHz) [3-5]. Since the UWB system operates at such a wide spectrum that covers many communication systems, it is necessary to find an efficient method to reduce the signal interference between the UWB system and other wireless communication systems. Despite of the utilization of the slots on the patch and/or on the ground to achieve the band-notch effects, other problems, such as high loss of the antenna radiation efficiency and reflection coefficient, still exist. So far, several studies of the applications of the MIMO technology to the UWB system have been done for enhancing the system stability [6, 7]. However, the problem of realizing high isolation in the whole operating spectrum within a compact structure is serious, and plenty of studies have been done. Zhang et al. used the tree-like structure which resonates at multiple frequencies to reduce the mutual coupling [8]. Liu et al. proposed a compact UWB MIMO antenna, and the orthogonal polarization is used for enhancing isolation [9]. Chacko et al. utilized both tree-like structure and orthogonal polarization for decoupling [10]. Iqbal et al. used F-shaped stubs to realize low mutual coupling with high gain [11]. Metamaterial has been widely used in the antenna field due to its unique electromagnetic characteristics. The researches show that the metamaterial can be used for improving the antenna performance such as enhancing radiation properties [12], extending bandwidth [13], reducing mutual coupling [14], miniaturization [15], band-notching [16, 17], and multiple bands realization [18]. In recent years, some attempts using metamaterials such as electromagnetic band gap [19], single negative materials [2...

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Section: Isolator Designmentioning

confidence: 91%

Compact Uwb Mimo Antenna With Metamaterial-Inspired Isolator

Wang¹,

Duan²,

Li³

et al. 2018

PIER C

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“…On the other hand, high isolation in a compact size is always a challenging research topic for dual-polarized antennas. So far, many studies with great efforts have been made in this aspect [17], [18]. In [17], by placing four Vshaped patches around the radiating patches and introducing orthogonal feeding scheme, high isolation of better than 25 dB with a compact size of 40×40×1.524 mm 3 can be achieved in the bandwidth of 3.0-4.1 GHz.…”

Section: Introductionmentioning

confidence: 99%

A Building Block Assembly Dualband Dual-Polarized Antenna With Dual Wide Beamwidths for 5G Microcell Applications

2020

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A dualband dual-polarized antenna element with dual wide beamwidths for 5G microcell applications is initially proposed and investigated in this paper. To achieve very low manufacturing cost, an unprecedented method is applied to the antenna element, in which the antenna components are printed separately on F-4B substrates, follow by assembling them to form the antenna element (similar to building block assembly). To further achieve high gain, an 1×4 antenna array is also designed. Measured results show that the half power beamwidths (HPBWs) in Hand E-planes are 112±1 • and 105±3 • in the lower frequency band of 3.22-3.88 GHz, respectively, and 99±3 • and 106±4 • in the upper frequency band of 4.52-5.02 GHz, respectively. In addition, high front-to-back ratio (FBR) of approximately 19 dB and high isolation of 33.6 dB can also be achieved. INDEX TERMS Building block assembly, dualband, dual-polarized, dual wide beamwidths, 5G microcell applications.

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“…In [3], in order to reduce the mutual coupling at lower frequency, two bent slots are etched into the ground plane. The antenna elements are placed perpendicularly in [4] and [5] to reduce mutual coupling in low frequency. Different parasitic structures were investigated to improve isolation in [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

A Compact Dual Band-Notched Mimo Diversity Antenna for Uwb Wireless Applications

Zhao¹,

Zhang²,

Cao³

et al. 2019

PIER C

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In this paper, a compact ultra-wideband (UWB) multiple-input multiple-output (MIMO) spatial diversity antenna with dual band-notches designed on an FR4 substrate is proposed and experimentally investigated. The antenna consists of two radiating elements fed by two tapered microstrip lines. Two inverted L-shaped slits are used to introduce notches at WLAN (5.15-5.85 GHz) and IEEE INSAT/Super-Extended C-band (6.7-7.1 GHz). An isolation of more than 15 dB is achieved through the whole working band (2.9-10.8 GHz) by introducing a T-shaped decoupling structure on the ground plane. Furthermore, the envelope correlation coefficient (ECC), diversity gain (DG), multiplexing efficiency, TARC, peak gain and radiation patterns of the MIMO antenna are also discussed. The simulated and measured results show that the proposed UWB MIMO antenna is a good candidate for UWB diversity applications.

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Wideband Low-Profile Highly Isolated MIMO Antenna With Artificial Magnetic Conductor

Cited by 72 publications

References 20 publications

Compact Uwb Mimo Antenna With Metamaterial-Inspired Isolator

Compact Uwb Mimo Antenna With Metamaterial-Inspired Isolator

A Building Block Assembly Dualband Dual-Polarized Antenna With Dual Wide Beamwidths for 5G Microcell Applications

A Compact Dual Band-Notched Mimo Diversity Antenna for Uwb Wireless Applications

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