Mutual Coupling Reduction in UWB Modified Maltese Shaped DRA Array for MIMO Applications

Trivedi, Kedar; Pujara, Dhaval

doi:10.23919/eumc.2018.8541664

Cited by 5 publications

(7 citation statements)

References 6 publications

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“…Numerous works on reducing mutual coupling between DRA elements have been reported, such as by using defected ground structures (DGS), electromagnetic band-gap (EBG) structure, metamaterials, and frequency selective surfaces (FSSs). DGS technique is applied in [63,64] to control the impedance transmission capacity and reduce mutual coupling. However, the proposed antennas are LP and would suffer in antenna misalignment, thus degrading the antenna performance.…”

Section: Multiple-input-multiple-output Cp Dramentioning

confidence: 99%

A Review of Circularly Polarized Dielectric Resonator Antennas: Recent Developments and Applications

et al. 2022

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A comprehensive review on recent developments and applications of circularly polarized (CP) dielectric resonator antennas (DRAs) is proposed in this paper. DRAs have received more considerations in various applications due to their advantages such as wide bandwidth, high gain, high efficiency, low losses, and low profile. A broad justification for circular polarization and DRAs is stated at the beginning of the review. Various techniques such as single feed, dual, or multiple feeds used by different researchers for generating circular polarization in DRAs are briefly studied in this paper. Multiple-input-multiple-output (MIMO) CP DRAs, which can increase channel capacity, link reliability, and data rate, have also been analyzed. Additionally, innovative design solutions for broadening the circular polarization bandwidth and reducing mutual coupling are studied. Several applications of DRA are also discussed comprehensively. This paper finishes with concluding remarks.

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Section: Multiple-input-multiple-output Cp Dramentioning

confidence: 99%

A Review of Circularly Polarized Dielectric Resonator Antennas: Recent Developments and Applications

et al. 2022

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“…All these methods manipulate the coupling by blocking or minimizing the current flow between adjacent elements. Dielectric resonator antenna has become one of the popular methods owing to its high gain, low loss, large impedance bandwidth [13], easily integrated with printed board [14], and flexibility excitation schemes such as microstrip feed lines, coaxial feed probes, aperture coupling, proximity feed, and co-planar waveguides [1,[15][16][17]. Therefore, extensive research on the dielectric resonator antenna (DRA) MIMO antenna has been published, focusing on mutual coupling reduction [1,13,16,[18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…Dielectric resonator antenna has become one of the popular methods owing to its high gain, low loss, large impedance bandwidth [13], easily integrated with printed board [14], and flexibility excitation schemes such as microstrip feed lines, coaxial feed probes, aperture coupling, proximity feed, and co-planar waveguides [1,[15][16][17]. Therefore, extensive research on the dielectric resonator antenna (DRA) MIMO antenna has been published, focusing on mutual coupling reduction [1,13,16,[18][19][20][21][22][23][24]. A few methods adopted from previous studies on the reduction of mutual coupling for DRA MIMO system were metamaterial polarization-rotator wall [18], metasurface shield [22], modified DRA shaped [13,24], metallic vias and strips [16,21], varying the DRA excitation mode [1] and dielectric superstrate [19].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, extensive research on the dielectric resonator antenna (DRA) MIMO antenna has been published, focusing on mutual coupling reduction [1,13,16,[18][19][20][21][22][23][24]. A few methods adopted from previous studies on the reduction of mutual coupling for DRA MIMO system were metamaterial polarization-rotator wall [18], metasurface shield [22], modified DRA shaped [13,24], metallic vias and strips [16,21], varying the DRA excitation mode [1] and dielectric superstrate [19].…”

Section: Introductionmentioning

confidence: 99%

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A MIMO Dielectric Resonator Antenna in single DRA Element with Reduce Mutual Coupling

Zambak

Adam

Yasin

et al. 2022

Preprint

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A multiple input multiple output (MIMO) dielectric resonator antenna (DRA) with reduced mutual coupling is presented in the paper. The antenna resonates at dual frequencies of 4.91GHz and 6.5GHz with a coupling of less than -35dB. Unlike other DRA MIMO antennas, the design proposed in this work implements a single DRA to cover both antenna elements. The mutual coupling compensation is done using a DRA with a Z-shaped hole at the bottom of the DRA. Two slots were etched on the ground plane for impedance matching of the antenna. Analysis of the optimization of the DRA structure is presented with each of the findings presented in detail. A comparison of the energy density of the proposed DRA structure with a conventional DRA structure indicates that introducing a Z-shaped hole inside the DRA reduces the coupling between the antenna elements. MIMO antenna performances such as envelope correlation coefficient, diversity gain, channel capacity and total active reflection were presented with all values that are justifiable for MIMO applications. The proposed DRA show an ideal DRA MIMO antenna with a less complicated design.

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“…A fractal DRA and defected ground structures (DGS) was implemented with isolation has enhanced up to 15 dB [24]. Similarly, Malteseshaped DRAs utilizing C-shaped periodic DGS observes a significant reduction in mutual coupling [25]. There are several electromagnetic band-gap (EBG) structure designs have been incorporated in DRAs as well.…”

Section: Introductionmentioning

confidence: 99%

A Compact Circularly Polarized MIMO Dielectric Resonator Antenna Over Electromagnetic Band-Gap Surface for 5G Applications

2019

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We present a wideband circularly polarized (CP) multiple-input multiple-output (MIMO) dielectric resonator antenna (DRA) with enhanced diversity. In the DRA element, two diagonal edges of the DR were truncated at 45 • to obtain a wider axial ratio larger than 0.65 GHz. The DRA element was excited by a cross-ring slot with specific slot-arm ratio through microstrip-line (MSTL) implemented at the backside of the FR4 substrate to generate CP fields. Small triangular stands at the edge of the DR were employed to hold it in place to avoid any degradation from the uncontrollable bonding agent used for attaching DR onto the FR4 substrate. The DRA achieved an impedance bandwidth better than 0.8 GHz with an antenna gain of 4.83 dBi. Using the DRA with the MSTL feed, two-element CP-DRA array was implemented with electromagnetic band-gap (EBG) structure etched onto the ground plane of the MSTL. The proposed architecture achieves isolation better than 26 dB over the desired frequency band without any performance degradation while maintaining its compact size in the array. Various diversity analysis was carried out on the implemented circularly polarized MIMO DRA. The measured results demonstrated that the proposed singly fed DRA with EBG on the ground plate is suitable for implementing wideband circular polarized MIMO antennas in a compact size.INDEX TERMS Dielectric resonator antennas, electromagnetic band-gap, MIMO, mutual coupling.

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Mutual Coupling Reduction in UWB Modified Maltese Shaped DRA Array for MIMO Applications

Cited by 5 publications

References 6 publications

A Review of Circularly Polarized Dielectric Resonator Antennas: Recent Developments and Applications

A Review of Circularly Polarized Dielectric Resonator Antennas: Recent Developments and Applications

A MIMO Dielectric Resonator Antenna in single DRA Element with Reduce Mutual Coupling

A Compact Circularly Polarized MIMO Dielectric Resonator Antenna Over Electromagnetic Band-Gap Surface for 5G Applications

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