Leaky‐wave plasma antenna with tunable radiation angle

Kallel, Asma; Sokoloff, J. B.; Callegari, Thierry

doi:10.1002/mop.28647

Cited by 9 publications

(5 citation statements)

References 27 publications

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“…Although many studies have been conducted on the application of plasma media in their conductive mode in communication systems, there are very limited studies on the applications of plasma media in their dielectric mode , especially as a dielectric in the leaky wave antennas 35 , 36 or a dielectric lens in front of a feed antenna 37 – 39 . However, it is well known that plasma structures are relatively good dielectrics at frequencies higher than the plasma frequency 37 .…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable biconcave lens antenna based on plasma technology

Sadeghikia

Zafari

Dorbin

et al. 2023

Sci Rep

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This article is focused on the application of plasma technology for the development of microwave lens antennas with electronically controllable radiation gain. With this aim, the analytical background and design procedure for designing a biconcave lens based on plasma dielectric material are presented. The procedure is used to design a plasma lens antenna with a pyramidal horn feed. The effect of switching the designed lens ON and OFF on the radiation gain of the lens antenna is investigated. It is also shown that the plasma frequency of the lens can be used to dynamically adjust the radiation gain. A one-dimensional version of the proposed plasma lens operating at 10 GHz has been developed to validate the concept. Experimentally measured characteristics of a fabricated prototype of the lens antenna based on commercially available fluorescent lamps confirm the presented design procedure and numerical results. The results also show that changing the plasma frequency of the lens can be used to adjust the radiation gain of the proposed lens antenna.

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Section: Introductionmentioning

confidence: 99%

Reconfigurable biconcave lens antenna based on plasma technology

Sadeghikia

Zafari

Dorbin

et al. 2023

Sci Rep

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“…Based on previous studies, the next step we propose here for controlling electromagnetic wave propagation by plasmas and plasma metamaterials is to use effects of spatial gradient of n e or N. Spatial gradient of N is one of the essential fac tors to achieve cloaking phenomena, but this may be effec tive in other ways, details of which were reported in [4]. One proposal so far is leakywave antenna structure [11]. Here we show unidirectionality observed in a plasma column sur rounding a central metallic pole [55], which is also used in microwave antenna applications.…”

Section: Experimental and Numerical Results On Unidirectionalitymentioning

confidence: 99%

“…In parallel, different and significant progress has been made in the use of plasma antennae as wave sources and media [9][10][11]. Although, in one case, plasma is a simple alter native to a metallic component, design as radiation sources via optimization includes significant physical aspects triggered by industrial demands.…”

Section: Linear Wave Propagation In Plasma Metamaterials and Related ...mentioning

confidence: 99%

“…Its simple analogy is replacement of a metal component of a radiofrequency (or microwave) antenna, and its apparent technical advantage is its rapid turnon and turn off property. However, as recently pointed out [11], the plasma antenna may exhibit further potential based on characteristics that only plasmas possess. Another example of progress we have to mention is periodic plasma structure in space and time [7,12].…”

Section: Introductionmentioning

confidence: 98%

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Plasma metamaterials as cloaking and nonlinear media

Sakai

Yamaguchi

Bambina

et al. 2016

Plasma Phys. Control. Fusion

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Plasma metamaterials, composites of lowtemperature plasmas and periodic functional microstructures, work as cloaking and nonlinear media. Due to functions of the microstructures like negative permeability, electromagnetic waves in and around plasma metamaterials propagate in a quite different manner from the case with the conventional space in which relative permeability is positive and unity. Using plasmas and plasma metamaterials, we achieve various controls of microwave propagating paths such as unidirectionality and cloaking in the two or 3D spaces. For instance, a concentric plasma layer makes wave propagation unidirectional, and waves propagate in different routes when they start inside or outside the concentric layer. Furthermore, due to spatial permittivity gradient and anisotropic refractive index, electromagnetic waves detour in plasma metamaterial layers. Another significant point that plasma metamaterials can realize is nonlinearity. When we study highpower electromagnetic waves propagating in them, we observe several properties describable in terms of nonlinear dynamics and nonlinear photonics. Microwaves beyond threshold energy trigger bifurcations in plasma permittivity, and the second harmonic wave detected simultaneously is generated with strong emission levels. Such electromagnetic wave propagation is achieved with advantages over other materials, since plasmas and metallic microstructures work in harmony and in synergy.

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“…LWA structures are studied using different geometries such as one dimensional (1D) and two dimensional (2D) structures. Periodic structures are introduced in [20,21]. The leakage from 2D-LWAs propagates radially outward from the planar interface with beam-width scanning from pencil beam at broadside to conical beam at other angles with frequency sweeping [22].…”

Section: Introductionmentioning

confidence: 99%

Planar Reconfigurable Plasma Leaky-Wave Antenna with Electronic Beam-Scanning for MIMO Applications

Malhat

Elhenawy

Zainud-Deen

et al. 2022

Wireless Pers Commun

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A planar leaky-wave antenna (LWA) based on the reconfigurable conductivity of the plasma is designed for MIMO applications with electronic beam scanning capability. 112-semi-elliptical ionized plasma gratings are encased by plexiglass grating filled with a noble gas. These gratings are printed on a metal-backed dielectric substrate with total dimensions of $$ L\times {W}_{s}\times h=241\times 262.5\times 2.67\, {\mathrm{mm}}^{3}$$ L × W s × h = 241 × 262.5 × 2.67 mm 3 . A coplanar fed printed Yagi-Uda like dipole antenna is integrated with the LWA to launch the required excitation waves. The radiated beam direction, gain, and the side lobe level are adjusted by controlling the periodicity of ionized/non-ionized plasma gratings. The antenna is compact in construction and has a high gain. A fan-shaped beam is obtained from the LWA semi-elliptical arrays with different aspect ratios. The effect of ON/OFF plasma periodicity configurations on the radiation characteristics at fixed frequency is investigated. At 10.1 GHz, the beam is electronically scanned from − 28 to 34° using different periodicities with high gain of 20 dBi and radiation efficiency of 74%. The mutual coupling between two LWA elements is investigated and is reduced to − 35 dB. Four LWA elements are arranged in MIMO structure for a high data rate application. The envelope correlation coefficient of 0.0002 and diversity gain of 9.9998 dB are achieved.

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Leaky‐wave plasma antenna with tunable radiation angle

Cited by 9 publications

References 27 publications

Reconfigurable biconcave lens antenna based on plasma technology

Reconfigurable biconcave lens antenna based on plasma technology

Plasma metamaterials as cloaking and nonlinear media

Planar Reconfigurable Plasma Leaky-Wave Antenna with Electronic Beam-Scanning for MIMO Applications

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