High-Selectivity single- and dual-resonator microstrip filters

Aristarkhov, G. M.; Zvezdinov, N. V.

doi:10.1134/s1064226917080034

Cited by 10 publications

(2 citation statements)

References 1 publication

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“…The coaxial-strip transitions at ports 2 and 4 were removed, since they did not provide the no-load mode at these ports. The shown scheme is all-pass at the same phase velocities of in-phase and antiphase waves [32,33] The measurement scheme shown in Figure 11 allows measuring the voltage of the reflected wave from port 1. This dependence was measured.…”

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

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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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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

View full text Add to dashboard Cite

show abstract

“…Using the design features of a microstrip conductor, it is possible to significantly bring together several of its lowest oscillation modes in frequencies, which will form a wide bandwidth. It is important that, in terms of such parameters as miniaturization, reliability, manufacturability, and cost, devices based on such resonators [11], including ultra-wideband (UWB) ones, are among the best.…”

Section: Introductionmentioning

confidence: 99%

The Automatic Design of Multimode Resonator Topology with Evolutionary Algorithms

Stanovov

Khodenkov²,

Popov³

et al. 2022

Sensors

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Microwave electromagnetic devices have been used for many applications in tropospheric communication, navigation, radar systems, and measurement. The development of the signal preprocessing units including frequency-selective devices (bandpass filters) determines the reliability and usability of such systems. In wireless sensor network nodes, filters with microstrip resonators are widely used to improve the out-of-band suppression and frequency selectivity. Filters based on multimode microstrip resonators have an order that determines their frequency-selective properties, which is a multiple of the number of resonators. That enables us to reduce the size of systems without deteriorating their selective properties. Various microstrip multimode resonator topologies can be used for both filters and microwave sensors, however, the quality criteria for them may differ. The development of every resonator topology is time consuming. We propose a technique for the automatic generation of the resonator topology with required frequency characteristics based on the use of evolutionary algorithms. The topology is encoded into a set of real valued parameters, which are varied to achieve the desired features. The differential evolution algorithm and the genetic algorithm with simulated binary crossover and polynomial mutation are applied to solve the formulated problem using the dynamic penalties method. The experimental results show that our technique enables us to find microstrip resonator topologies with desired amplitude-frequency characteristics automatically, and manufactured devices demonstrate characteristics very close to the results of the algorithm. The proposed algorithmic approach may be used for automatically exploring the new perspective topologies of resonators used in microwave filters, radar antennas or sensors, in accordance with the defined criteria and constraints.

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Investigation of microstrip ultra-wideband bandpass filters

Belyaev

Khodenkov

Shepeta

et al. 2020

J. Phys.: Conf. Ser.

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Ultra-wideband microwave filters with high frequency-selective properties have been developed by means of electrodynamic numerical analysis of 3D models. Microstrip structures, which are studied theoretically and experimentally, use one multimode resonator and a pair of single-mode resonators. There is fairly good agreement between the calculated data and the data taken on the experimental sample. The relative bandwidth of the manufactured microstrip filter is 60%.

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High-Selectivity single- and dual-resonator microstrip filters

Cited by 10 publications

References 1 publication

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"

The Automatic Design of Multimode Resonator Topology with Evolutionary Algorithms

Investigation of microstrip ultra-wideband bandpass filters

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