FSS-Based Spatially Decoupled Back-to-Back Four-Port MIMO DRA With Multidirectional Pattern Diversity

Das, Gourab; Sahu, Nikesh Kumar; Sharma, Anand; Gangwar, Ravi Kumar; Sharawi, Mohammad S.

doi:10.1109/lawp.2019.2922276

Cited by 52 publications

(33 citation statements)

References 13 publications

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“…This technique provides pattern diversity for further enhancement in isolation between two ports. 8 Figure 13 shows axial ratio variation for proposed design toward broadside direction with port-1 activated. In Figure 13, four different cases are taken: (a) with square aperture (b) with modified square aperture with single slit (c) with modified square aperture with double slit (d) with modified square aperture and PEC.…”

Section: Single Port Analysismentioning

confidence: 99%

“…2 In the open literature, researchers are widely focused on getting three important features: (i) generation of multiband/wideband characteristics [3][4][5] ; (ii) isolation enhancement through S-parameter 6,7 ; and (iii) isolation enhancement between different far-field parameters. 8 Sharma et al proposed a two-port hybrid DRA over the areas of multiband applications. It is a combination of printed monopole and cylindrical ceramic material.…”

Section: Introductionmentioning

confidence: 99%

“…To fulfill this requirement, Das et al used FSS structures for tilting the radiation pattern obtained from different ports. 8 The concept of polarization diversity along with beam tilting is widely used in intelligent vehicular communication. Polarization diversity avoids the problem of crosstalk as well as tilted beam helps in communicating within the blind area.…”

Section: Introductionmentioning

confidence: 99%

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Circularly polarized dielectric resonator‐based multiple input multiple output antenna with pattern and polarization diversity for vehicular applications

Srivastava

Dwivedi

Sharma

2021

Circuit Theory & Apps

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In this article, a modified layout of cylindrical dielectric material-based, resonator-type multiple input multiple output antenna (MIMO) is presented.The beam tilting feature is achieved by using a conducting plate placed in the mid of two antenna elements. Dual frequency-band operation, that is, 2.4-4.02 and 4.78-6.21 GHz is obtained by sourcing the ring DRA electromagnetically with asymmetric S-shaped aperture via microstrip line. Dual CP waves are supported by the designed antenna within the operating frequency band, that is, 2.84-2.95 and 5.63-5.66 GHz. The two ports are placed in parallel. Some salient features of the designed antenna are (i) pattern diversity (θ = ±30 in XZ plane) is obtained between two parallel placed ports by applying conducting plate; (ii) polarization diversity is obtained by simply taking a mirror image of the proposed aperture. The most favorable value of diversity parameters of the suggested DR-based MIMO antenna makes it satisfactory for smart transport and vehicular communication applications in the sub-6-GHz range.

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Section: Single Port Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Circularly polarized dielectric resonator‐based multiple input multiple output antenna with pattern and polarization diversity for vehicular applications

Srivastava

Dwivedi

Sharma

2021

Circuit Theory & Apps

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“…In the last decade, various techniques have been applied to mutual coupling reduction for DRA elements 5–18 . At the beginning, changing the positions, 5 the polarized directions, 6 and beam directions 7 of the DRA elements are adopted to reduce the mutual coupling.…”

Section: Introductionmentioning

confidence: 99%

Mutual coupling reduction in wideband dielectric resonator antennas

Shi

2021

Int J RF Microw Comput Aided Eng

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An effective method for reducing the mutual coupling between wideband dielectric resonator (DR) antennas (DRAs) is proposed by covering the metal on the middle dielectric bridge, the contralateral sides and contralateral upper edges of the DRs. This metal decoupling structure can make the coupled electric fields in the adjacent DR be perpendicular to the electric fields of the excited DR, which produce wideband and high isolation between two adjacent DRAs. Thus, the gain of DRA can be restored. For the structural characteristics, the dielectric bridges can connect the decoupling structure and the dielectric blocks of DRAs with high dielectric constant together on the same substrate by PCB process. Finally, the isolation level of the proposed DRAs can be enhanced from 15.5 to 32.3 dB over the effective frequency range from 10.22 to 13.37 GHz or 26.7%.

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“…Metal or aperture is embedded over the dielectric substrate to work as band-stop or bandpass filter, respectively [6]. Other applications of FSS are antenna reflectors, radomes, electromagnetic shields, absorbers, polarizer, and in communication [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Design of a Triple Band Notched Compact FSS at Uwb Frequency Range

Katoch¹,

Jaglan²,

Gupta³

2019

PIER M

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This article presents a bandstop Frequency Selective Surface (FSS) prototype based on square split ring resonators (SSRRs) and a square loop (SL) structure for Ultra Wide Band (UWB) frequency range. Triple band notches are obtained at WiMAX (3.3-3.6 GHz), WLAN (5-6 GHz), and Satellite communication X-band (7.2-8.4 GHz). To make this proposed design work as a band-stop filter, two SSRRs are positioned at the top layer of the substrate to resonate at WiMAX and WLAN frequency band, respectively. A single SL is located at the bottom of the substrate that resonates at satellite communication X-band. Attenuation more than 20 dB is observed at all notched frequencies. An angular stability from 0 • to 40 • is obtained. Compact size, simple structure, low cost material, single layer, easy fabrication, and wide coverage are some of the feathers of this proposed FSS. The dimension of proposed unit cell of FSS is 10 × 10 mm 2 .

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FSS-Based Spatially Decoupled Back-to-Back Four-Port MIMO DRA With Multidirectional Pattern Diversity

Cited by 52 publications

References 13 publications

Circularly polarized dielectric resonator‐based multiple input multiple output antenna with pattern and polarization diversity for vehicular applications

Circularly polarized dielectric resonator‐based multiple input multiple output antenna with pattern and polarization diversity for vehicular applications

Mutual coupling reduction in wideband dielectric resonator antennas

Design of a Triple Band Notched Compact FSS at Uwb Frequency Range

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