On the use of Multiple Beam-Shifters Developed using Transformation Electromagnetics to Control Propagation Characteristics

Mitra, Dipankar; Cleveland, Jerika; Lewis, Jacob; Braaten, Benjamin D.; Allen, Jeffery; Allen, Monica

doi:10.1109/rapid49481.2020.9195696

Cited by 2 publications

(3 citation statements)

References 3 publications

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“…Later, this concept was adopted to steer the radiation pattern of a dipole antenna around an irremovable perfect electric conductor (PEC) object before propagating on its original route [35].…”

Section: Transformation Electromagnetic/opticsmentioning

confidence: 99%

A Comprehensive Study on Next-Generation Electromagnetics Devices and Techniques for Internet of Everything (IoE)

et al. 2022

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Evolution of mobile broadband is ensured by adopting a unified and more capable radio interface (RI). For ubiquitous connectivity among a wide variety of wireless applications, the RI enables the adoption of an adaptive bandwidth with high spectrum flexibility. To this end, the modern-day communication system needs to cater to extremely high bandwidth, starting from below 1 GHz to 100 GHz, based on different deployments. This instigates the creation of a platform called the Internet of Everything (IoE), which is based on the concept of all-round connectivity involving humans to different objects or things via sensors. In simple words, IoE is the intelligent connection of people, processes, data, and things. To enable seamless connectivity, IoE resorts to low-cost, compact, and flexible broadband antennas, RFID-based sensors, wearable electromagnetic (EM) structures, circuits, wireless body area networks (WBAN), and the integration of these complex elements and systems. IoE needs to ensure broader information dissemination via simultaneous transmission of data to multiple users through separate beams and to that end, it takes advantage of metamaterials. The precise geometry and arrangement of metamaterials enable smart properties capable of manipulating EM waves and essentially enable the metamaterial devices to be controlled independently to achieve desirable EM characteristics, such as the direction of propagation and reflection. This review paper presents a comprehensive study on next-generation EM devices and techniques, such as antennas and circuits for wearable and sub 6 GHz 5G applications, WBAN, wireless power transfer (WPT), the direction of arrival (DoA) of propagating waves, RFID based sensors for biomedical and healthcare applications, new techniques of metamaterials as well as transformation optics (TO) and its applications in designing complex media and arbitrary geometry conformal antennas and optical devices that will enable future IoE applications.

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Section: Transformation Electromagnetic/opticsmentioning

confidence: 99%

A Comprehensive Study on Next-Generation Electromagnetics Devices and Techniques for Internet of Everything (IoE)

et al. 2022

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“…One salient example is the cloak [4]. This success led to the development of many other unique EM devices [5][6][7][8][9][10][11][12][13][14][15] that exhibit unconventional and unusual propagation characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…Rahm et al [7] showed how to design a beam shifter using TO. Utilizing a similar idea, researchers in [12,13] proposed a set of beam-shifters to avoid obstacles in the beam path. In [18], researchers experimentally showed a TO-based lens for beam control at microwave frequencies.…”

Section: Introductionmentioning

confidence: 99%

Coordinate Transformations-Based Antenna Elements Embedded in a Metamaterial Shell with Scanning Capabilities

et al. 2021

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In this work transformation electromagnetics/optics (TE/TO) were employed to realize a non-homogeneous, anisotropic material-embedded beam-steerer using both a single antenna element and an antenna array without phase control circuitry. Initially, through theory and validation with numerical simulations it is shown that beam-steering can be achieved in an arbitrary direction by enclosing a single antenna element within the transformation media. Then, this was followed by an array with fixed voltages and equal phases enclosed by transformation media. This enclosed array was scanned, and the proposed theory was validated through numerical simulations. Furthermore, through full-wave simulations it was shown that a horizontal dipole antenna embedded in a metamaterial can be designed such that the horizontal dipole performs identically to a vertical dipole in free-space. Similarly, it was also shown that a material-embedded horizontal dipole array can perform as a vertical dipole array in free-space, all without the need of a phase shifter network. These methods have applications in scanning for wireless communications, radar, beam-forming, and steering.

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On the use of Multiple Beam-Shifters Developed using Transformation Electromagnetics to Control Propagation Characteristics

Cited by 2 publications

References 3 publications

A Comprehensive Study on Next-Generation Electromagnetics Devices and Techniques for Internet of Everything (IoE)

A Comprehensive Study on Next-Generation Electromagnetics Devices and Techniques for Internet of Everything (IoE)

Coordinate Transformations-Based Antenna Elements Embedded in a Metamaterial Shell with Scanning Capabilities

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