Sheet Beam Driven Metamaterial Backward Wave Oscillator

Hadap, Arti; Banerjee, Tusharika S; Saxena, A.

doi:10.1109/icops37625.2020.9717696

Cited by 1 publication

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“…The extensive research on MTMs over the last decades comprises exploring their extraordinary electromagnetic characteristics like negative Permittivity, negative Permeability, reversed Doppler Effect, reversed Cherenkov Effect, negative Refractive Index etc (Veselago Viktor G., 1968;Pendry et al, 1999;Smith et al, 2000;Pendry et al, 2006;Marqués et al, 2007;Simovski et al, 2009;Chen et al, 2016;Hadap et al, 2020). These exotic electromagnetic properties motivated several potential applications in the field of VEDs.…”

Section: Introductionmentioning

confidence: 99%

Annular Beam Driven Metamaterial Backward Wave Oscillator

Vengurlekar,

Saxena

2024

IJERR

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Metamaterials (MTMs) are synthetic materials designed to have characteristics that "may not be readily available in nature," such as negative permittivity, reversed Doppler Effect, reversed Cherenkov Effect, and negative Refractive Index. These characteristics have motivated researchers to analyze and investigate the use of MTMs for modelling high-power microwave (HPM) radiation sources. One of the most potential HPM sources is an annular beam-driven Backward-Wave Oscillator (BWO) based on the Cerenkov mechanism. The devices that use the Cerenkov mechanism are preferred due to their larger bandwidth. Its high output power and repetition operations make it a promising source. In this paper, an annular beam-loaded metamaterial BWO is simulated in order to investigate and comment on the possibility of metamaterial or metamaterial-inspired structures replacing the slow-wave structures (SWSs) in vacuum tube devices. Performance parameters of several BWO configurations loaded with different metamaterial-inspired conductor rings are compared to rippled SWS-based BWOs. The results suggest that fewer metamaterial rings with solid cross-section (CS) inside the BWO lead to a closer match in generated output power and frequency with the output power generated using a rippled SWS.

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