2022
DOI: 10.1088/1361-6595/ac4848
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Plasma-based microwave power limitation in a printed transmission line: a self-consistent model compared with experimental data

Abstract: Plasma-based microwave power limitation in a suspended microstrip transmission line integrating a micro hollow cathode discharge (MHCD) in its center is experimentally and numerically studied. Transient and steady state microwave power measurements exhibit a limitation threshold of 28 dBm and time responses of 25 microseconds. Intensified charge-coupled device (ICCD) imaging shows that microwave breakdown occurs at the top of the MHCD. The plasma then extends towards the microwave source within the suspended m… Show more

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Cited by 5 publications
(13 citation statements)
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“…The effect in longer times and steady-state should be properly investigated although under the high pressure conditions of this work, the discrepancy should remain qualitatively bounded to an acceptable range. For future studies, we recommend using the electron energy density flux given by equation (11), which is consistent with the models used in [37,38] where thermal conductivity is governed by the free diffusion coefficient. (b) The model ignores any detailed plasma chemistry and only direct electron impact ionization (ignoring step-wise processes), attachment, electron-ion dissociative recombination are considered while electron impact excitation is included in the electron energy balance.…”
Section: Discussion On Physical Modelmentioning
confidence: 83%
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“…The effect in longer times and steady-state should be properly investigated although under the high pressure conditions of this work, the discrepancy should remain qualitatively bounded to an acceptable range. For future studies, we recommend using the electron energy density flux given by equation (11), which is consistent with the models used in [37,38] where thermal conductivity is governed by the free diffusion coefficient. (b) The model ignores any detailed plasma chemistry and only direct electron impact ionization (ignoring step-wise processes), attachment, electron-ion dissociative recombination are considered while electron impact excitation is included in the electron energy balance.…”
Section: Discussion On Physical Modelmentioning
confidence: 83%
“…The current model thus, underestimates the electron energy density flux inside the plasma bulk region, compared to the more consistent models used in e.g. [37,38], where thermal conduction is governed by the free diffusion coefficient. In section 5, we elaborate on the possible consequences of the used formulation.…”
Section: Physical Modelmentioning
confidence: 77%
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“…Recently, the authors have proposed a microstrip transmission line device integrating a microwave-sustained discharge for power limiting applications [11]. Although initially developed to protect against high-power microwave threats, this device can also be seen as a potential microwave plasma source.…”
Section: Introductionmentioning
confidence: 99%