Printed Multi-Band MIMO Antenna Systems and Their Performance Metrics [Wireless Corner]

Sharawi, Mohammad S.

doi:10.1109/map.2013.6735522

Cited by 465 publications

(340 citation statements)

References 32 publications

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“…The lower the correlation, the higher data throughput can be supported by the MIMO antenna. It is viewed as that antenna with a correlation coefficient under 0.7 has the ability to provide a rich diversity [14]. The ECC can be calculated from S-parameters as given below [14]:…”

Section: Parallel Configurationmentioning

confidence: 99%

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Mutual Coupling Reduction of E-Shaped MIMO Antenna with Matrix of C-Shaped Resonators

Alsultan

Yetkin

2018

International Journal of Antennas and Propagation

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E-shaped multiple-input-multiple-output (MIMO) microstrip antenna systems operating in WLAN and WiMAX bands (between 5 and 7.5 GHz) are proposed with enhanced isolation features. The systems are comprised of two antennas that are placed parallel and orthogonal to each other, respectively. According to the simulation results, the operating frequency of the MIMO antenna system is 6.3 GHz, and mutual coupling is below −18 dB in a parallel arrangement, whereas they are 6.4 GHz and −25 dB, respectively, in the orthogonal arrangement. The 2 × 3 matrix of C-shaped resonator (CSR) is proposed and placed between the antenna elements over the substrate, to reduce the mutual coupling and enhance the isolation between the antennas. More than 30 dB isolation between the array elements is achieved at the resonant frequency for both of the configurations. The essential parameters of the MIMO array such as mutual coupling, surface current distribution, envelop correlation coefficient (ECC), diversity gain (DG), and the total efficiency have been simulated to verify the reliability and the validity of the MIMO system in both parallel and orthogonal configurations. The experimental results are also provided and compared for the mutual coupling with simulated results. An adequate match between the measured and simulated results is achieved.

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Section: Parallel Configurationmentioning

confidence: 99%

“…The diversity gain (DG) is another critical parameter that must be taken into account while evaluating the MIMO performance since it gives an idea about the reliability of the MIMO system. The DG has been calculated using the mathematical expression [14]:…”

Section: Parallel Configurationmentioning

confidence: 99%

Mutual Coupling Reduction of E-Shaped MIMO Antenna with Matrix of C-Shaped Resonators

Alsultan

Yetkin

2018

International Journal of Antennas and Propagation

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“…With the rapid development of mobile communication techniques, multifunctional services demand for multiband/broadband antennas, covering a wide bandwidth to sufficiently meet the requirements specified in the 2G, 3G, 4G and 5G standards, also WLAN, WiMAX and so on. [1] However, because of the physical limited size of the mobile terminal and the increasing number of other components (such as battery, LCD, RF components, and plastic housing), the antennas for mobile handsets usually need to be compact and easy integration with other components so as to support the multiple functions of the devices. Consequently, it is challenging to design handset antenna in the limited area to cover not only the conventional mobile communication bands (GSM/DCS/PCS/ UMTS/LTE) but also the nearly future 5G bands.…”

Section: Introductionmentioning

confidence: 99%

A compact planar ultra-wideband handset antenna with L-shaped extended ground stubs

Liu

Peng

et al. 2017

IEICE Electron. Express

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In this letter, a compact planar ultra-wideband mobile antenna with L-shaped extended ground stubs is presented. The proposed handset antenna consists of two planar meandered monopole radiating elements, i.e., main antenna and auxiliary antenna respectively, located at the diagonal corners of mobile phone printed circuit broad with standard size of 136 × 68 mm 2 . Each radiating element is composed of two arms and a L-shaped extended ground stub, jointly achieving multiple resonances and ultra-wideband impedance matching with a compact size. The effect of the L-shaped ground stub is investigated in detail. The proposed antenna has a compact size of 31.4 × 12 mm 2 , printed simple structure and full-band coverage (GSM850 and 1.6-5.4 GHz) for wireless handsets systems, including GSM850, DCS1800, PCS1900, UMTS, LTE, WiMAX, and WLAN in 4G and 5G communication systems. The optimized antenna prototype is fabricated and measured. The measured results show that the reflection coefficients are less than −6 dB over the operating bands and the mutual coupling between two ports is less than −20 dB. Good agreement is obtained between the simulated and measured results. The results demonstrate that the proposed handset antenna has good characteristics of ultra-wideband, isolation, gain, and radiation pattern, and is a good candidate as a terminal antenna for handsets applications.

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“…A multi-input multi-output (MIMO) antenna exploits multiple antenna elements to achieve a higher channel capacity that is proportionate to the number of antenna elements [1]. The conventional approach for MIMO applications is to arrange the antennas over more than half of the wavelength to avoid correlation [2]; thus, it extends the physical size of the antenna.…”

Section: Introductionmentioning

confidence: 99%

An Eight-Element Compact Low-Profile Planar MIMO Antenna Using LC Resonance with High Isolation

Kwon¹,

Lee²,

Kim³

et al. 2016

Journal of electromagnetic engineering and science

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(Print) 194 I. INTRODUCTIONIn multi-path environments, a high channel capacity is required in order to send more data in the desired direction. A multi-input multi-output (MIMO) antenna exploits multiple antenna elements to achieve a higher channel capacity that is proportionate to the number of antenna elements [1]. The conventional approach for MIMO applications is to arrange the antennas over more than half of the wavelength to avoid correlation [2]; thus, it extends the physical size of the antenna. Moreover, increasing the number of antenna elements in a mobile device affects MIMO performance due to mutual coupling between antennas.Several MIMO antenna designs have been proposed to minimize the mutual coupling between antenna elements and to simultaneously decrease the antenna size. The basic approach is to increase the space between antennas, but the space is limited, especially for mobile applications. Decoupling networks [3,4], the slit pattern [5], the parasitic element [6], and the electromagnetic band gap (EBG) [7,8] have been analyzed; however, these methods require additional space on an antenna. In this paper, we propose a compact low-profile planar MIMO antenna that unites eight inverted-F antennas with an isolationenhanced structure. We designed the proposed antenna to achieve high isolation between the antenna elements and we verified the antenna's function by identifying the surface current and radiation patterns. II. DESIGN OF THE PROPOSED ANTENNAThe antenna shown in Fig. 1 An eight-element compact low-profile multi-input multi-output (MIMO) antenna is proposed for wireless local area network (WLAN) mobile applications. The proposed antenna consists of eight inverted-F antennas with an isolation-enhanced structure. By inserting the isolation-enhanced structure between the antenna elements, the slot and capacitor pair generates additional resonant frequency and decreases mutual coupling between the antenna elements. The overall size of the proposed antenna is only 33 mm× 33 mm, which is integrated into an area of just 0.5 λ× 0. Manuscript received May 28, 2016 ; Revised July 6, 2016 ; Accepted July 6, 2016. (ID No. 20160528-017J) This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ⓒ

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Printed Multi-Band MIMO Antenna Systems and Their Performance Metrics [Wireless Corner]

Cited by 465 publications

References 32 publications

Mutual Coupling Reduction of E-Shaped MIMO Antenna with Matrix of C-Shaped Resonators

Mutual Coupling Reduction of E-Shaped MIMO Antenna with Matrix of C-Shaped Resonators

A compact planar ultra-wideband handset antenna with L-shaped extended ground stubs

An Eight-Element Compact Low-Profile Planar MIMO Antenna Using LC Resonance with High Isolation

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