On Waveguide’s Critical Corona Breakdown Thresholds Dependence on the Collision Frequency Between Electrons and Air

Medina, I.; Couder-Castañeda, Carlos; Hernández-Gómez, J. J.; Saucedo-Jiménez, D.

doi:10.1109/tps.2019.2897081

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The propagation of electromagnetic field with operating frequencies along the THz band is under study in this section. Waveguides are commonly used as a microwave device where information travels in various communication systems; it is necessary to correctly describe the propagation of waves within them to determine their filtering effects, as well as their limitations on electric field intensity [38].…”

Section: Coplanar Nano-waveguidementioning

confidence: 99%

Accelerating Electromagnetic Field Simulations Based on Memory-Optimized CPML-FDTD with OpenACC

et al. 2022

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Although GPUs can offer higher computing power at low power consumption, their low-level programming can be relatively complex and consume programming time. For this reason, directive-based alternatives such as OpenACC could be used to specify high-level parallelism without original code modification, giving very accurate results. Nevertheless, in the FDTD method, absorbing boundary conditions are commonly used. The key to successful performance is correctly implementing the boundary conditions that play an essential role in memory use. This work accelerates the simulations of electromagnetic wave propagation that solve the Maxwell curl equations by FDTD using CMPL boundary in TE mode using OpenACC directives. A gain of acceleration optimizing the use of memory is shows, checking the loops intensities, and the use of single precision to improve the performance is also analyzed, producing an acceleration of around 5X for double precision and 11X for single precision respectively, comparing with the serial vectorized version, without introducing errors in long-term simulations. The scenarios of simulation established are common of interest and are solved at different frequencies supported by a Mid-range cards GeForce RTX 3060 and Titan RTX.

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Section: Coplanar Nano-waveguidementioning

confidence: 99%

Accelerating Electromagnetic Field Simulations Based on Memory-Optimized CPML-FDTD with OpenACC

et al. 2022

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Breakthrough design of power handling capability‐enhanced slotted oversized substrate‐integrated waveguide power divider/combiner considering corona and thermal effects

Souri,

Masoumi,

Mohammad‐Taheri

2024

IET Microwaves Antenna & Prop

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An analysis and design of a new slotted power divider/combiner (PDC) that utilises an oversized substrate‐integrated waveguide (OS‐SIW) is presented to enhance power handling capability (PHC). It is interesting to note that, the power capability tolerance can be increased by increasing the width of structure and thickness of the substrate, although it may introduce higher‐order modes. The paper is focused on improving PHC of PDC that propagates only the TE10 mode while preventing the propagation of higher‐order modes. Additionally, the PHC of the proposed structure is studied in detail. The air breakdown or the corona effect is a physical phenomenon that limits the Peak Power Handling Capability (PPHC) of a device. In slotted microwave components, the corona effect plays a crucial role in determining the PPHC, and it is closely related to environmental conditions such as pressure. Another limiting factor is self‐heating, which affects the device's Average Power Handling Capability (APHC). The slotted OS‐SIW PDC is designed on Rogers RO4003 laminate with 32mil thickness, offering a low profile with an overall OS‐SIW PDC area of 170 × 55 mm2. The measured results of the fabricated PDC showcase a range of desirable features. Moreover, the proposed structure in power divider mode exhibits significant improvements in APHC compared to those of the conventional Substrate‐Integrated Waveguides structures, with respective enhancements of approximately 8.26% at 10 GHz (with a Fractional Band Width of 58.3%). These advantages are highly beneficial and hold great potential.

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On Waveguide’s Critical Corona Breakdown Thresholds Dependence on the Collision Frequency Between Electrons and Air

Cited by 2 publications

References 7 publications

Accelerating Electromagnetic Field Simulations Based on Memory-Optimized CPML-FDTD with OpenACC

Accelerating Electromagnetic Field Simulations Based on Memory-Optimized CPML-FDTD with OpenACC

Breakthrough design of power handling capability‐enhanced slotted oversized substrate‐integrated waveguide power divider/combiner considering corona and thermal effects

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