A high-gain, broad-wall slotted waveguide antenna array to be used as part of a narrowband high power microwaves system

Bernal, Sandra; Vega, Félix; Román, Francisco; Valero, Alejandro

doi:10.1109/iceaa.2015.7297190

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…The obtained field symmetry leads to a homogeneous power distribution inside the cavity from the multiple radiating slots, with a potential advantage in terms of power absorbed from the plasma. Furthermore, the use of the slotted waveguide could in principle lead to an increase of the total employable power by creating a splitted-injection system composed of multiple slotted waveguides placed radially with respect to the cavity [20].…”

Section: Slotted Waveguide Injection Simulationsmentioning

confidence: 99%

Design and Analysis of Slotted Waveguide Antenna Radiating in a “Plasma-Shaped” Cavity of an ECR Ion Source

Mauro

Torrisi

Leonardi

et al. 2021

Telecom

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The design of a microwave antenna sustaining a high-energy-content plasma in Electron Cyclotron Resonance Ion Sources (ECRISs) is, under many aspects, similar to the design of a conventional antenna but presenting also peculiarities because of the antenna lying in a cavity filled by an anisotropic plasma. The plasma chamber and microwave injection system design plays a critical role in the development of future ECRISs. In this paper, we present the numerical study of an unconventionally shaped plasma cavity, in which its geometry is inspired by the typical star-shaped ECR plasma, determined by the electrons trajectories as they move under the influence of the plasma-confining magnetic field. The cavity has been designed by using CST Studio Suite with the aim to maximize the on-axis electric field, thus increasing the wave-to-plasma absorption. As a second step, an innovative microwave injection system based on side-coupled slotted waveguides is presented. This new launching scheme allows an uniform power distribution inside the plasma cavity which could lead to an increase of ion source performances in terms of charge states and extracted currents when compared to the conventional axial microwave launch scheme. Finally, the use of both the “plasma-shaped” cavity and the microwave side coupled scheme could make the overall setup more compact.

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Section: Slotted Waveguide Injection Simulationsmentioning

confidence: 99%

Design and Analysis of Slotted Waveguide Antenna Radiating in a “Plasma-Shaped” Cavity of an ECR Ion Source

Mauro

Torrisi

Leonardi

et al. 2021

Telecom

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“…SWAAs provide high gain and are high-power handling, thus are typically applied to radar systems operating at microwaves and mm-waves [13,14]. Other applications include satellite television reception [15], land mines activation [16], and pressure sensors [17]. Our research group has recently proposed novel SWAAs for 5G networks [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Wideband Omnidirectional Slotted-Waveguide Antenna Array Based on Trapezoidal Slots

Filgueiras

Kelly

Xiao

et al. 2019

International Journal of Antennas and Propagation

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This manuscript presents a novel approach for designing wideband omnidirectional slotted-waveguide antenna arrays, which is based on trapezoidal-shaped slots with two different electrical lengths, as well as a twisted distribution of slot groups along the array longitudinal axis. The trapezoidal section is formed by gradually increasing the slot length between the waveguide interior and exterior surfaces. In this way, a smoother impedance transition between waveguide and air is provided in order to enhance the array operating bandwidth. In addition, we propose a twisting technique, responsible to improve the omnidirectional pattern, by means of reducing the gain ripple in the azimuth plane. Experimental results demonstrate 1.09 GHz bandwidth centered at 24 GHz (4.54% fractional bandwidth), gain up to 14.71 dBi over the operating bandwidth, and only 2.7 dB gain variation in the azimuth plane. The proposed antenna array and its enabling techniques present themselves as promising solutions for mm-wave application, including 5G enhanced mobile broadband (eMBB) communications.

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A Slotted Waveguide Antenna Array for High-power Microwave Applications

Binion

Mackertich-Sengerdy

Campbell

et al. 2020

2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting

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A high-gain, broad-wall slotted waveguide antenna array to be used as part of a narrowband high power microwaves system

Cited by 3 publications

References 5 publications

Design and Analysis of Slotted Waveguide Antenna Radiating in a “Plasma-Shaped” Cavity of an ECR Ion Source

Design and Analysis of Slotted Waveguide Antenna Radiating in a “Plasma-Shaped” Cavity of an ECR Ion Source

Wideband Omnidirectional Slotted-Waveguide Antenna Array Based on Trapezoidal Slots

A Slotted Waveguide Antenna Array for High-power Microwave Applications

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