FSS and Meta-material Based Low Mutual Coupling MIMO Antenna Array

Luo, Shiming; Li, Yingsong; Jiang, Tao; Li, Beiming

doi:10.1109/apusncursinrsm.2019.8888621

Cited by 16 publications

(3 citation statements)

References 5 publications

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“…Similarly, a multi-layer FSS operates at UWB frequency (2.98-10.86 GHz) was reported in [30]. A multi-layer FSS-based MIMO antenna array was presented in [31]. However, the antenna design was complicated, making it difficult to use in communication devices due to its bulky structure and high cost [32,33].…”

Section: Introductionmentioning

confidence: 99%

Low specific absorption rate quad-port multiple-input-multiple-output limber antenna integrated with flexible frequency selective surface for WBAN applications

Govindan

Palaniswamy²,

Kanagasabai³

et al. 2023

Flex. Print. Electron.

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This paper presents the design and analysis of a multiple-input-multiple-output (MIMO) textile antenna for wireless body area network (WBAN) applications. The MIMO antenna is comprised of four identical modified rhombus-shaped monopole antenna elements backed with a frequency selective surface (FSS) to improve gain and to reduce specific absorption rate (SAR). The antenna has an impedance bandwidth (S11 ≤ -10 dB) of 8.8 GHz (2.8-11.6 GHz) and isolation of >19 dB between the resonating elements. In order to assess the MIMO antenna's flexibility, the bending analysis is performed for various bending radii. The obtained diversity metrics are: Envelope correlation coefficient (ECC) < 0.5 dB, diversity gain (DG) < 10 dB, channel capacity loss (CCL) < 0.4 bits/s/Hz, and total active reflection coefficient (TARC) < -10 dB. The antenna's performance with and without FSS is evaluated for SAR investigation. The SAR values are reduced from 6.99 Watt/Kg to 0.0273 Watt/Kg with the aid of FSS. A peak gain of 8.08 dBi and maximum efficiency of 96 % are obtained with the FSS. The designed antenna is suitable for smart textile applications due to its low SAR, high gain, and wider impedance bandwidth.

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Section: Introductionmentioning

confidence: 99%

Low specific absorption rate quad-port multiple-input-multiple-output limber antenna integrated with flexible frequency selective surface for WBAN applications

Govindan

Palaniswamy²,

Kanagasabai³

et al. 2023

Flex. Print. Electron.

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“…Antenna mutual coupling is a very important parameter that will greatly affect the performance of a tight array. There is literature on how to reduce mutual coupling in MIMO systems [20,21]. In this paper, the antenna spacing is set to half wavelength, when the effect of mutual coupling is small.…”

Section: Introductionmentioning

confidence: 99%

Optimal Antenna Pattern Design for the Instantaneous MIMO Channel

et al. 2023

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Due to the rapid attenuation of the millimeter wave, it is necessary to use very large-scale antenna arrays in millimeter wave communications to get ultra-high directivity which improves the transmission distance and the signal-to-noise ratio. Considering the cost of large-scale RF links, analog beamforming plays an important role in large-scale MIMO communications. This paper discusses the calculation method of the antenna pattern that best matches the instantaneous MIMO channel in analog beamforming. By giving piecewise modeling on the antenna pattern, singular value decomposition and the water-filling algorithm are used to obtain the antenna pattern and the power distribution among antennas. The optimal antenna pattern can provide the target pattern for antenna synthesis to get the maximum capacity. The simulation results show that the method is effective.

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“…Since the mutual coupling between elements is a challenging issue, various techniques to decrease the coupling between elements have been introduced in literature during the past years. In [4] a defected ground structure has been employed to suitably reduce the coupling between two antennas. Electromagnetic band gap structures have been widely used in MIMO antennas to overcome the problem of the mutual coupling in array antennas and consequently improve the isolation.…”

Section: Introductionmentioning

confidence: 99%

Highly Isolated Compact Tri-Band MIMO Antenna with Trapezoidal Defected Ground Plane for 5G Communication Devices

Usman

Pedram

Zhu

et al. 2020

2020 International Conference on UK-China Emerging Technologies (UCET)

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In this paper a compact tri-band MIMO antenna has been proposed for 5G wireless communication devices. The isolation of -20 dB has been obtained between the two input ports using meander line structures and five vias incorporating at different places of the structure. Two rectangular slots have been etched on the radiating patch to further improve antenna performance. The designed antenna provides multiband characteristic in S, C and X frequency bands. Different characteristic parameters such as Envelope Correlation Coefficient, diversity gain, electric field distribution and radiation pattern are also presented and discussed . The overall antenna volumetric size is 42×34×1mm 3 .

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FSS and Meta-material Based Low Mutual Coupling MIMO Antenna Array

Cited by 16 publications

References 5 publications

Low specific absorption rate quad-port multiple-input-multiple-output limber antenna integrated with flexible frequency selective surface for WBAN applications

Low specific absorption rate quad-port multiple-input-multiple-output limber antenna integrated with flexible frequency selective surface for WBAN applications

Optimal Antenna Pattern Design for the Instantaneous MIMO Channel

Highly Isolated Compact Tri-Band MIMO Antenna with Trapezoidal Defected Ground Plane for 5G Communication Devices

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