UWB antenna and MIMO antennas with bandwidth, band‐notched, and isolation properties for high‐speed data rate wireless communication: A review

Yadav, Rohit; Malviya, Leeladhar

doi:10.1002/mmce.22033

Cited by 26 publications

(11 citation statements)

References 105 publications

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“…Microstrip antennas have been the most preferred ones when it comes to the matter of compactness, low profile, and lower manufacturing costs. The resonating frequency for any squared, circular, or rectangular patch can be derived using equations (54) and (55) [128]. But, it is very difficult to attain high gains using the same.…”

Section: Beam Steeringmentioning

confidence: 99%

5G beamforming techniques for the coverage of intended directions in modern wireless communication: in-depth review

Rao¹,

Pant²,

Malviya³

et al. 2020

Int. J. Microw. Wireless Technol.

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The growing need of the compact and portable antennas with high speed and low latency wireless communication is the present and future demand of the voice over Internet protocol, on-demand bandwidth, and multimedia applications. Fifth-generation (5G) covers certain low-frequency bands under 6 GHz spectrum, and most of the high-frequency bands under 60 GHz. 5G is the part of the millimeter wave spectrum (30–300 GHz) and is introduced to overcome the problem of spectrum shortage due to exponential enhancement of wireless applications in industry, medical, airborne, radar, satellite, and research fields. The International Telecommunication Union's objective of wireless communications promises to provide higher data rates up to 10 Gbps for 5G mobile users and connectivity to the artificial intelligence devices, along with high spectral efficiencies and enhanced coverage. The users for the 5G require around 5 and 50 Gbps of data rates for low and high mobility, respectively. Beamforming in 5G is the modern powerful technique for the coverage of the intended user/direction using the narrow beam width radiation patterns. A brief survey on 5G beamforming techniques, i.e. analog, digital, hybrid, switched, and adaptive etc. and its types, working algorithms, design of compact antennas, gain, and size/type of the substrates is carried out in this paper. The study of the hybrid coupler, branchline coupler, Wilkinson power divider, and Butler matrix in beamforming is required for 5G smart antennas. Different beam widths like ±15, ±35, ±45, and ±55° etc. are produced for the intended directions using a variety of beamforming techniques. From lower to higher frequency band beamforming applications with Roger's Duroid 4003/4350/5880, tectonic, and aluminum oxide dielectric substrates are discussed here. Various beamforming techniques with their merits, demerits, and applications are included in the paper for the knowledge extension of the beamforming antenna designers and research community.

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Section: Beam Steeringmentioning

confidence: 99%

5G beamforming techniques for the coverage of intended directions in modern wireless communication: in-depth review

Rao¹,

Pant²,

Malviya³

et al. 2020

Int. J. Microw. Wireless Technol.

Self Cite

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“…Additionally, spatial diversity schemes are used with UWB structures to improve the system's performance. Antenna diversity is a recognized technique to improve the performance of UWB systems by encountering the multipath fading and co-channel interference [14,15]. Introducing more antenna elements at the transmitting/receiving terminals increases the link reliability of the transceiving system, thus making the receiver extra robust, efficient, and secure.…”

Section: Introductionmentioning

confidence: 99%

Design of Quad-Port Ultra-Wideband Multiple-Input-Multiple-Output Antenna with Wide Axial-Ratio Bandwidth

Kumar

Urooj

Malibari

2020

Sensors

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This article presents a compact, planar, quad-port ultra-wideband (UWB) multiple-input–multiple-output (MIMO) antenna with wide axial ratio bandwidth (ARBW). The proposed MIMO design consists of four identical square-shaped antenna elements, where each element is made up of a circular slotted ground plane and feed by a 50 Ω microstrip line. The circular polarization is achieved using a protruding hexagonal stub from the ground plane. The four elements of the MIMO antenna are placed orthogonally to each other to obtain high inter-element isolation. FR-4 dielectric substrate of size 45 × 45 × 1.6 mm3 is used for the antenna prototype, and a good agreement is noticed among the simulated and experimental results. The proposed MIMO antenna shows 3-dB ARBW of 52% (3.8–6.5 GHz) and impedance bandwidth (S11 ≤ −10 dB) of 144% (2.2–13.5 GHz).

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“…Multiple-input multiple-output (MIMO) technology is another effective technique for mitigating this issue, in addition to its features of increasing the channel capacity and transmission quality [4]. By combining both UWB and MIMO technologies, a new MIMO-UWB system can further alleviate the multipath issue [7]. However, due to some existing wireless standards, i.e., WiMAX (3.3-3.7 GHz), WLAN (5.15-5.35 GHz, and 5.725-5.825), etc., that share the frequency bands within the UWB regulation standards, this causes interference to the UWB system and degrades its performance.…”

Section: Introductionmentioning

confidence: 99%

“…To suppress these unwanted interferences, band-rejected UWB antennas have been studied widely and intensively [8]. Due to the above design technical challenges, the design of the wideband antenna is deemed to be a challenge in meeting the compact size and high bandwidth requirements of many MIMO-orientated applications [7].…”

Section: Introductionmentioning

confidence: 99%

Compact Wideband MIMO Diversity Antenna for Mobile Applications Using Multi-Layered Structure

et al. 2020

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A closely packed wideband multiple-input multiple-output (MIMO)/diversity antenna (of two ports) with a small size of less than 18.5 mm by 18.5 mm is proposed for mobile communication applications. The antenna can be orthogonally configured for corner installation or by placing it on a back-to-back structure for compact modules. To enhance the isolation and widen the bandwidth, the antenna is structured with multiple layers having differing dielectric constants. The feeding through a via significantly reduces the ground waves. A multi-fidelity surrogate model-assisted design exploration method is employed to obtain the optimized antenna geometric parameters efficiently. The antenna design was investigated using electromagnetic simulation and a physical realization of the optimal design was then created and subjected to a range of tests. The specific parameters investigated included reflection coefficients, mutual coupling between the input ports, radiation patterns, efficiency and parameters specific to MIMO behavior: envelope correlation coefficient and pattern diversity multiplexing coefficient. It was found that the antenna has an impedance bandwidth of approximately 4 GHz, mutual coupling between input ports of better than −18 dB and an envelope correlation coefficient of less than 0.002 across the operating band. This makes it a good candidate design for many mobile MIMO applications.

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UWB antenna and MIMO antennas with bandwidth, band‐notched, and isolation properties for high‐speed data rate wireless communication: A review

Cited by 26 publications

References 105 publications

5G beamforming techniques for the coverage of intended directions in modern wireless communication: in-depth review

5G beamforming techniques for the coverage of intended directions in modern wireless communication: in-depth review

Design of Quad-Port Ultra-Wideband Multiple-Input-Multiple-Output Antenna with Wide Axial-Ratio Bandwidth

Compact Wideband MIMO Diversity Antenna for Mobile Applications Using Multi-Layered Structure

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