Wideband Gain Enhancement of High-Isolation and Quasi-Omnidirectional Metamaterial MIMO Antenna for Vehicular Radar

Wang, Ping; Liu, Jie; Huang, Guilan; Wu, Qi; Zhou, Chao; Wang, Wensong

doi:10.1109/tim.2022.3210989

Cited by 10 publications

(4 citation statements)

References 30 publications

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“…The air cavity between the substrates was primarily responsible for the unroundness of the radiation pattern. However, the feasibility of quasi-omnidirectional antennas have been proved for mobile communications in the past [32]- [35].…”

Section: A Quasi-omnidirectional Radiation Pattern and Circular Polar...mentioning

confidence: 99%

Microstrip-Ministered Proximity-Coupled Stacked Dual-Port Antenna for 6G Applications

Kamal,

Sen

2024

IEEE Access

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A novel dual-port multiple-input−multiple-output (MIMO) antenna arrangement is introduced for attaining quasi-omnidirectional circular polarization (OCP) towards device-to-device (D2D) integrated sensing and communications (ISAC) deployment in sixth generation (6G) networks. The antenna architecture comprises of three dielectric laminates arranged one below/above the other with each substrate juxtaposed to its counterpart by the air cavity. The upper laminate encompasses solitary element frequency selective surface (FSS) etched on both fronts. Impedance matching transmission lines and partly reactive impedance surfaces (RIS) were printed on the top and bottom region of the middle substrate, respectively. The lower laminate features microstrip feed lines on the top side and semi ground planes on the bottom. The MIMO antenna was made up of two ports and fed through proximity coupling from the opposite ends of the middle substrate's top surface to resonate with a −10 dB impedance bandwidth (I-BW) of ∼35%. The partial RIS enabled >20 dB of isolation between the ports while the air cavities between the laminates contributed to achieve a realized gain of >7 dBi. The antenna occupies 1.2λ × 1.2λ footprint and 0.1λ height at 12 GHz to exhibit quasi-OCP in the azimuth plane with axial ratio (AR) of <3 dB and efficiency of >90%. The envelope correlation coefficient (ECC), diversity gain, specific absorption rate (SAR), and power density (PD) at the band of interest were <0.1, ∼10 dB, <1.6 W/kg, and <10 W/m 2 , respectively. The results of the Ansys HFSS simulations and the measurements taken within the anechoic chamber exhibited good agreement. In contrast to state-of-the-art quasi-OCP antennas operating in the 12 GHz spectrum, the novelty of the proposed MIMO antenna includes a straightforward and compact configuration that is integrated synergistically to provide reasonably high gain and efficiency values.

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Section: A Quasi-omnidirectional Radiation Pattern and Circular Polar...mentioning

confidence: 99%

Microstrip-Ministered Proximity-Coupled Stacked Dual-Port Antenna for 6G Applications

Kamal,

Sen

2024

IEEE Access

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“…R ECONFIGURABLE intelligent surface (RIS) is a type of metasurface [1], [2] that can dynamically modify the propagation of electromagnetic waves [3], [4]. RISs have been identified as a key enabling technology for sixthgeneration (6G) wireless communications and Industry 5.0 [5], [6].…”

Section: Introductionmentioning

confidence: 99%

“…This work addresses the existing gap by concentrating on the electronic reliability of RIS-aided communication systems. We introduce non-residual stochastic RIS hardware impairments 1 as a method to comprehend the life cycle of RISs, which encompasses the period from their deployment in communication networks to the point at which performance degradation due to hardware ageing impacts their operational effectiveness. Key aspects of the RIS's life cycle include:…”

Section: Introductionmentioning

confidence: 99%

Extending RIS Life Span for Reliable Communication Under Hardware Ageing Effects

Mondal,

Ghosh,

Singh

et al. 2024

IEEE Open J. Commun. Soc.

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In this paper, we address the critical aspect of hardware ageing effects in reconfigurable intelligent surfaces (RISs), whereby the problem of extending the RIS's life cycle under the impact of non-residual stochastic hardware impairment is considered. Through the replication of the RIS hardware and diverse wireless environments within a statistical simulation environment, we formulate an electronic maintenance framework (EMF) for RIS, where we incorporate non-residual impairments through stochastic modelling and determine the electronic reliability of the system. Accordingly, we derive optimal analytical solutions within the EMF to determine whether systematic maintenance of the RIS hardware should be done immediately or postponed in order to extend the expected life cycle of the RIS system. Furthermore, for the scenario with imperfect maintenance of the RIS-aided system, a reliable communication framework (RCF) is also introduced with residual impairments to assess the error probability of the RIS-aided communication. The RCF is established by deriving the distribution of the received signal-to-interference-plus-noise ratio in the presence of residual hardware impairment arising due to imperfect maintenance of the RIS system.Extensive numerical examples are provided to elucidate the derived solutions and illustrate the reliability performance of the proposed framework under hardware impairments.INDEX TERMS Industrial informatics and communication, electronic maintenance, industrial internet-ofthings, reliability, reconfigurable intelligent surfaces, hardware impairment.

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“…For years, in order to improve the gain, directivity, and radiation efficiency while keeping the size of the antennas small, different types of metamaterials have been proposed, such as artificial magnetic conductors [1,2], high-impedance surfaces [3,4], electromagnetic band rejecting structures [5], doubly negative materials [6,7], zero-order resonators [8], composite left-righthanded metamaterials [9], and metasurfaces [10] and the use of split ring resonators and their complement [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Monopole Antenna for On-Chip E-Band Applications

2023

RSL

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We present the design of an enhanced monopole antenna for on-chip applications using a metasurface composed of an array of Jerusalem cross unit cells to improve the radiation and electrical properties. The monopole antenna operates from 67.83 GHz to 81.93 GHz, covering a part of the E-band. The achieved enhancement was from 1 to 2.33 dBi, from 0.02 dBi to 0.31 dBi, and from 19% to 49% for gain, directivity, and radiation efficiency, respectively, derived from full-wave simulations. The topology was designed on a 300 lm thickness high-resistivity silicon wafer and an 18 lm silicon dioxide insulation layer between the monopole antenna and metasurface. The total size of the proposed device is 1.2 3 1.2 3 0.330 mm 3 . The frequency range, size, simplicity, and materials used for the design are suitable for on-chip applications, such as in vehicular radar systems, as well as other E-band applications.

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Wideband Gain Enhancement of High-Isolation and Quasi-Omnidirectional Metamaterial MIMO Antenna for Vehicular Radar

Cited by 10 publications

References 30 publications

Microstrip-Ministered Proximity-Coupled Stacked Dual-Port Antenna for 6G Applications

Microstrip-Ministered Proximity-Coupled Stacked Dual-Port Antenna for 6G Applications

Extending RIS Life Span for Reliable Communication Under Hardware Ageing Effects

Enhanced Monopole Antenna for On-Chip E-Band Applications

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