Analysis of Frequency Characteristics of a Reflection Symmetric Modal Filter

Chernikova, Evgeniya B.; Belousov, Anton O.; Gazizov, Talgat R.

doi:10.1109/sibircon48586.2019.8958116

“…The grid spacing varies from 276 m to 17 m. A realistic shape of the initial sea surface displacement in the tsunami source was used. A similar approach to modeling the wave process was applied to the coupled line analysis [49].…”

Section: Eigen and Bound Wavesmentioning

confidence: 99%

Interference in Coupled Structures with Strongly Un-balanced Phase Velocities of Normal Waves and its Electromagnetic Analogy with "Tsunami"

Malyutin¹,

Loschilov²,

Malyutin³

et al. 2022

Preprint

0

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An analogy is drawn between the appearance of tsunami waves and "slow" waves in coupled structures (CS). Tectonic disturbances, as the cause of tsunami generation, generate "fast" waves similar to those in СS. The assumption is made that it is theoretically possible to give a rapid prediction of the occurrence of a natural disaster on the basis of information about the disturbing factor and environmental parameters. The paper notes the obvious problem of the lack of information about the parameters of the initial conditions of excitation of a rapid wave of tectonic origin in the prediction of tsunamis. It is possible that the considered electrodynamics analogy "Tsunami" will allow, firstly, to put and solve the problem of reconstruction of disturbing impact parameters, since the information about it comes before consequences, secondly, to develop "desktop" model of tsunami for some areas, thirdly, to develop measures to protect the coast by creating devices for diversion of tsunami wave energy part in safe directions.

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“…The grid spacing varies from 276 m to 17 m. A realistic shape of the initial sea surface displacement in the tsunami source was used. A similar approach to modeling the wave process was applied to the coupled line analysis [49].…”

Section: Eigen and Bound Wavesmentioning

confidence: 99%

Interference in Coupled Structures with Strongly Un-balanced Phase Velocities of Normal Waves and its Electromagnetic Analogy with "Tsunami"

Malyutin¹,

Loschilov²,

Malyutin³

et al. 2022

Preprint

0

View full text Add to dashboard Cite

An analogy is drawn between the appearance of tsunami waves and "slow" waves in coupled structures (CS). Tectonic disturbances, as the cause of tsunami generation, generate "fast" waves similar to those in СS. The assumption is made that it is theoretically possible to give a rapid prediction of the occurrence of a natural disaster on the basis of information about the disturbing factor and environmental parameters. The paper notes the obvious problem of the lack of information about the parameters of the initial conditions of excitation of a rapid wave of tectonic origin in the prediction of tsunamis. It is possible that the considered electrodynamics analogy "Tsunami" will allow, firstly, to put and solve the problem of reconstruction of disturbing impact parameters, since the information about it comes before consequences, secondly, to develop "desktop" model of tsunami for some areas, thirdly, to develop measures to protect the coast by creating devices for diversion of tsunami wave energy part in safe directions.

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“…This is achieved by ensuring simultaneously the edge and broad-side couplings between the conductors. The papers [19][20][21] are devoted to some research into reflection symmetric structures. However, there is no systematic representation of the recently obtained and new results of reflection symmetric MFs.…”

Section: Parametermentioning

confidence: 99%

Using Reflection Symmetry to Improve the Protection of Radio-Electronic Equipment from Ultrashort Pulses

Chernikova

¹

,

Belousov

²

,

Gazizov

³

et al. 2019

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The paper considers the protection of critical radio-electronic equipment (REE) from ultrashort pulses (USP) by means of modal filters (MFs). A new approach to improve modal filtration by using reflection symmetry is analyzed. The results of a sophisticated research into protective devices based on reflection symmetric MFs are presented: improving the characteristics of four MFs through optimization both by one and simultaneously by several criteria; calculating the per-unit-length time delays matrix of a reflection symmetric MF using the obtained analytical expressions; calculating the time and frequency responses of an MF with and without losses in conductors and dielectric; developing the laboratory evaluation board; analyzing the effect of moisture protection on the characteristics; analyzing the features of reflection symmetry structures; comparing microstrip and reflection symmetric four-conductor MFs. The obtained results allow us to argue that the reflection symmetric MF protects REE from a USP due to its decomposition into a sequence of pulses with pairwise equalized voltage amplitudes and close time intervals between decomposition pulses with an attenuation coefficient of four times with a controlled bandwidth of a useful signal. This research helps take advantage of the possibilities of using the symmetry to improve modal filtering and opens the ways to create a large number of new MF designs, applying only the principles of the symmetry described in the work.

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Analysis of Frequency Characteristics of a Reflection Symmetric Modal Filter

Cited by 3 publications

References 10 publications

Interference in Coupled Structures with Strongly Un-balanced Phase Velocities of Normal Waves and its Electromagnetic Analogy with "Tsunami"

Interference in Coupled Structures with Strongly Un-balanced Phase Velocities of Normal Waves and its Electromagnetic Analogy with "Tsunami"

Interference in Coupled Structures with Strongly Un-balanced Phase Velocities of Normal Waves and its Electromagnetic Analogy with "Tsunami"

Using Reflection Symmetry to Improve the Protection of Radio-Electronic Equipment from Ultrashort Pulses

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