Implementation of cross couplings in microwave bandpass filters

Belyaev, B. A.; Сержантов, А. М.; Bal’va, Ya. F.; Tyurnev, V. V.; Leksikov, A.A.; Galeev, R. G.

doi:10.1002/mop.28507

Cited by 18 publications

(5 citation statements)

References 13 publications

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“…1), в котором реализуется дополнительная электромагнитная связь между несмежными резонаторами. Такая перекрёстная связь, как известно, позволяет существенно увеличивать крутизну склонов АЧХ [13].…”

Section: конструкция двумерного микрополоскового электромагнитного крunclassified

A lowpass filter based on a 2d microstrip electromagnetic crystal

Belyaev

Khodenkov

Galeev

et al. 2019

Доклады Академии наук

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A new construction of a lowpass filter was developed based on a two-dimensional microstrip electromagnetic crystal, which had a steeper slope of the frequency response as compared to a filter consisting of a one-dimensional microstrip electromagnetic crystal. The investigated lowpass filter construction is characterized by a high workability and ease of manufacturing. Electrodynamic numerical simulation of the 3D model of the considered microstrip structure agrees well with the experiment, which allows conducting parametric synthesis of devices with the required properties using a personal computer.

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Section: конструкция двумерного микрополоскового электромагнитного крunclassified

A lowpass filter based on a 2d microstrip electromagnetic crystal

Belyaev

Khodenkov

Galeev

et al. 2019

Доклады Академии наук

Self Cite

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“…Such microwave bandpass filters [5,[8][9][10] are also traditionally used in radio equipment. However, the development of these promising designs implies not only a constant improvement in their electrical characteristics and a reduction in size, but also a significant expansion of the operating bandwidth, which, accordingly, can significantly expand information transmission channels, or, on the contrary, cut off interference in a wide range.…”

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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“…Moreover, it is possible to take advantage of a stepped impedance coaxial resonator (SIR) [9] effect appearing in the folded structure to modulate the size reduction. This principle provided an original concept for a resonator, the SIR coaxial resonator [10][11][12], built from coaxial structures fitted inside one another. The main particularity of this resonator is its construction out of a succession of coaxial sections in cascade, where the ground conductor of one becomes the central core of the next, or vice-versa.…”

Section: Introductionmentioning

confidence: 99%

A compact L-band bandpass filter based on SIR coaxial resonators with high multipactor threshold

Bénédicto

Rius

Favennec

et al. 2021

Int. J. Microw. Wireless Technol.

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This paper presents the design of a sixth-order cross-coupled L-band filter, specifically intended for space applications. The solution was based on the principle of stepped impedance coaxial resonators (SIRs), which allowed us to fulfill several electrical and size specifications and more particularly a high multipactor threshold. The degrees of freedom afforded by the proposed topology offer a wide choice of design configuration possibilities. Whatever the central frequency and required specifications, several compromises can be made in terms of volume, height, footprint, quality factor, multipactor threshold, harmonic rejection, etc. For instance, SIR coaxial topology is very well suited to small L-band filters when moderate quality factors and multipactor thresholds of around 4000 and 400 W, respectively, are requested. The design procedure is presented and simulations and measurements are compared and discussed.

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Implementation of cross couplings in microwave bandpass filters

Cited by 18 publications

References 13 publications

A lowpass filter based on a 2d microstrip electromagnetic crystal

A lowpass filter based on a 2d microstrip electromagnetic crystal

The Automatic Design of Multimode Resonator Topology with Evolutionary Algorithms

A compact L-band bandpass filter based on SIR coaxial resonators with high multipactor threshold

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