Printed multi-band MIMO antenna systems: Techniques and Isolation mechanisms

Sharawi, Mohammad S.

doi:10.1109/eucap.2014.6901876

Cited by 50 publications

(64 citation statements)

References 11 publications

(18 reference statements)

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“…To verify the capability of MIMO antenna, it is important to have a low envelope correlation coefficient and a diversity gain of nearly 10 dB. The ECC (ρe) are computed using the far field radiation pattern as calculated in Equation (6) [35]: where → F i(θ, φ) is the far field property of the MIMO antenna after exciting port I and * stand as the multiplication sign, the proposed MIMO antenna ECC was calculated from 1 to 8 GHz. The diversity gain of MIMO antennas can be calculated from the ECC as: Figure 19 shows the ECC of the MIMO antenna with less than 0.002 over the entire frequency range.…”

Section: Diversity Analysis Of the Mimo Antennamentioning

confidence: 99%

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Characteristic Mode Analysis and Design of Wide Band MIMO Antenna Consisting of Metamaterial Unit Cell

2019

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This paper presents a full wave simulation and characteristic mode-based design of a multiple-input-multiple-output (MIMO) antenna at 5.8 GHz for wireless local area network applications. The driven analysis comprises two antennas that are placed orthogonal to each other. A metamaterial unit structure in the form of a rectangular loop resonator is placed around the antenna element to reduce the electromagnetic interference and to increase the isolation between the two monopoles. A characteristic mode technique is employed to find out the dominant mode of the proposed antenna without a feeding port. It was revealed that mode 1 was the dominant mode among the three modes used. The MIMO antenna is constructed and measured using a vector network analyzer. A good isolation of less than 25 dB was attained with a wide impedance bandwidth of 65.5%.

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Section: Diversity Analysis Of the Mimo Antennamentioning

confidence: 99%

“…are computed using the far field radiation pattern as calculated in Equation (6)[35]: field property of the MIMO antenna after exciting port I and * stand as the multiplication sign, the proposed MIMO antenna ECC was calculated from 1 to 8 GHz. The diversity gain of MIMO antennas can be calculated from the ECC as:…”

mentioning

confidence: 99%

Characteristic Mode Analysis and Design of Wide Band MIMO Antenna Consisting of Metamaterial Unit Cell

2019

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“…Among the antennas which are used for MIMO applications, printed antennas are more appropriate due to their low cost, easy fabrication and their capability of easily being integrated to small terminal devices [11]. However, placing multiple antennas in the limited space of a transceiver poses a significant challenge in the incorporation of the MIMO technique.…”

Section: Introductionmentioning

confidence: 99%

Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems

et al. 2019

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A design of mobile-phone antenna array with diamond-ring slot elements is proposed for fifth generation (5G) massive multiple-input/multiple-output (MIMO) systems. The configuration of the design consists of four double-fed diamond-ring slot antenna elements placed at different corners of the mobile-phone printed circuit board (PCB). A low-cost FR-4 dielectric with an overall dimension of 75 × 150 mm2 is used as the design substrate. The antenna elements are fed by 50-Ohm L-shaped microstrip-lines. Due to the orthogonal placement of microstrip feed lines, the diamond-ring slot elements can exhibit the polarization and radiation pattern diversity characteristic. A good impedance bandwidth (S11 ≤ −10 dB) of 3.2–4 GHz has been achieved for each antenna radiator. However, for S11 ≤ −6 dB, this value is 3–4.2 GHz. The proposed design provides the required radiation coverage of 5G smartphones. The performance of the proposed MIMO antenna design is examined using both simulation and experiment. High isolation, high efficiency and sufficient gain-level characteristics have been obtained for the proposed MIMO smartphone antenna. In addition, the calculated total active reflection coefficient (TARC) and envelope correlation coefficient (ECC) of the antenna elements are very low over the whole band of interest which verify the capability of the proposed multi-antenna systems for massive MIMO and diversity applications. Furthermore, the properties of the design in Data-mode/Talk-mode are investigated and presented.

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“…The 3 forms of smart antennas are known as single input multiple output, multiple input single output, and multiple input multiple output (MIMO). In MIMO antenna technology, multiple antennas are used at the source (transmitter) and at the destination (receiver) . The antenna element at each end of the communication system is required to minimize errors and to enhance data rate .…”

Section: Introductionmentioning

confidence: 99%

“…In MIMO antenna technology, multiple antennas are used at the source (transmitter) and at the destination (receiver). 3,4 The antenna element at each end of the communication system is required to minimize errors and to enhance data rate. 5,6 The use of multiple antenna elements along with the broadcast of multiple signals at the source and destination solves the problem of multipath propagation.…”

Section: Introductionmentioning

confidence: 99%

Multiport MIMO antennas with mutual coupling reduction techniques for modern wireless transreceive operations: A review

Chouhan

Panda

Gupta

et al. 2017

Int J RF Microw Comput Aided Eng

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The present technology fulfills the requirement of high data rate and high channel capacity using multiple input multiple output (MIMO) technology. The MIMO capacity of the system is increased linearly but due to the multiple antennas placed near to each other, problem of mutual coupling exists, which degrades the maximum achievable performance of the system. The problems of multipath propagation can be solved using MIMO system. The isolation improvement methods decrease the mutual coupling among antenna elements, and improve the gain and efficiency of the system. In this paper, decoupling network isolation approach, parasitic element approach, defected ground structure, Neutralization line, isolation improvement based on metamaterials, isolation improvement using PIN diode, varactor diode, and feeding structure have been incorporated, and their merits and demerits have been discussed. The effect of different permittivity material on antenna parameters has also included.

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Printed multi-band MIMO antenna systems: Techniques and Isolation mechanisms

Cited by 50 publications

References 11 publications

Characteristic Mode Analysis and Design of Wide Band MIMO Antenna Consisting of Metamaterial Unit Cell

Characteristic Mode Analysis and Design of Wide Band MIMO Antenna Consisting of Metamaterial Unit Cell

Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems

Multiport MIMO antennas with mutual coupling reduction techniques for modern wireless transreceive operations: A review

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