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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Tyurnev V. V., Voloshin A. S., Leksikov An. A., Galeev R. G., Shabanov V. F.
Заглавие : A Bandpass Filter Based on Dielectric Layers with a Strip Conductor Subwavelength Grating at Their Interfaces
Место публикации : Dokl. Phys. - 2020. - Vol. 65, Is. 9. - P.343-348. - ISSN 10283358 (ISSN), DOI 10.1134/S1028335820090013
Примечания : Cited References: 12. - This study was supported by the Ministry of Science and Higher Education of the Russian Federation, state assignment no. FEFE-2020-0013 “Development of the Theory of Self-Configurable Machine-Learning Algorithms for Simulating and Predicting Characteristics of Complex Systems”
Аннотация: The design of a multilayer bandpass filter has been investigated, in which each of the half-wavelength resonators consists of two dielectric layers with outer strip conductor gratings in the form of square grids and inner ones in the form of square patches. The grids serve as mirrors with specified reflective properties, which ensure optimal couplings of the outer resonators with free space and optimal coupling between the resonators. The patch gratings make it possible to tune the resonator eigenfrequency during the filter synthesis. The efficiency of the quasi-static calculation of the frequency response for the layered structure is shown for the case of a lattice period smaller than the wavelength in the dielectric and much smaller than the layer thickness. Since the calculation does not require much computing power, the parametric synthesis of the device can be performed on a conventional personal computer. The measured characteristics of the prototype of the synthesized third-order filter with a fractional passband width of ∼10% and a central passband frequency of ∼10.6 GHz are in good agreement with the calculation. The proposed design allows one to fabricate multilayer panels radio transparent in a certain frequency band for hiding microwave antennas.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Tyurnev V. V., Voloshin A. S., Leksikov An. A., Galeev R. G., Shabanov V. F.
Заглавие : A Bandpass Filter–Polarizer Based on a Dielectric Multilayer with Strip Conductor Gratings
Место публикации : Dokl. Phys. - 2020. - Vol. 65, Is. 7. - P.225-229. - ISSN 10283358 (ISSN), DOI 10.1134/S1028335820050067
Примечания : Cited References: 10. - This study was financially supported by the Ministry of Science and Higher Education of the Russian Federation in the implementation of the integrated project “Creation of a production of earth stations of advanced satellite communications systems to ensure the coherence of hard-to-reach, northern and Arctic territories of Russian Federation,” implemented with the participation of the Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences” (agreement number 075 -11-2019-078 dated 13.12.2019)
Аннотация: A new design of a multilayer bandpass filter is proposed, in which each resonator consists of two identical dielectric layers with parallel strip conductor gratings on their outer surfaces and an orthogonal strip conductor grating between the layers. The filter designed on the basis of crossed gratings works simultaneously as a polarizer transparent in a specified frequency band if the electric field vector of a wave is parallel to the outer strip conductors but reflects waves with an orthogonal polarization. The data from a numerical electrodynamic analysis of a 3D model of the proposed device agree well with the results of the measurements performed on the fifth-order filter–polarizer prototype with a relative bandwidth of 14% and a central frequency of 13.4 GHz. The microwave power loss in the filter passband is ~1.2 dB under parallel polarization of the electromagnetic wave and more than 40 dB under orthogonal polarization.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A. M., Leksikov An. A., Bal'va Ya. F., Aleksandrovsky A. S., Galeev R. G
Заглавие : A high-selectivity waveguide bandpass filter with interference suppression by more than 120 dB in rejection band
Колич.характеристики :5 с
Место публикации : Tech. Phys. Lett. - 2023. - Vol. 49, Is. 5. - P.72-76. - ISSN 10637850 (ISSN), DOI 10.21883/TPL.2023.05.56034.19541. - ISSN 10906533 (eISSN)
Примечания : Cited References: 10. - This study was carried out under agreement No. 470 dated August 30, 2022, between the Kirensky Institute of Physics (Siberian Branch, Russian Academy of Sciences), the Regional Science Foundation, and ”AO ”NPP ”Radiosvyaz“ as part of a competitive tender of research-andengineering and innovative projects for the first climatological research and education center ”Yenisey Siberia“
Аннотация: The design of a 10th-order waveguide bandpass filter with an additional inductive cross-coupling between non-adjacent resonators has been proposed and studied. An inductive coupling is formed by a U-shaped conductor structure with grounded ends that is formed in the filter cover. This method of cross-coupling organization ensures not only the temperature stability of the characteristics, but also the manufacturability of the structure. The high selectivity of the device is achieved by both the attenuation poles located near the passband, as well as the level of suppression in the stopbands, exceeding 120 dB. The passband loss of the fabricated filter is ~ 0.8 dB at its central frequency f0=18.2 GHz and relative bandwidth Δf/f0=1.5%. The small dimensions (135 x 30 x 10 mm) and the weight of about 200 g of the device, with simultaneously high electrical characteristics show the promise of its use, for example, in on-board and ground-based space communication systems.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A. M., Bal'va Y. F., Leksikov An. A., Grushevskii E. O.
Заглавие : A Highly Selective Bandpass Filter Based on Suspended Substrate Resonators with a Two-Sided Stripline Pattern
Коллективы : Ministry of Education and Science of the Russian Federation [14.575.21.0142, RFMEFI57517X0142]
Место публикации : Tech. Phys. Lett. - 2019. - Vol. 45, Is. 5. - P485-488. - ISSN 1063-7850, DOI 10.1134/S1063785019050225. - ISSN 1090-6533(eISSN)
Примечания : Cited References: 14. - This study was supported in part by the Ministry of Education and Science of the Russian Federation, agreement no. 14.575.21.0142, unique project identifier RFMEFI57517X0142.
Предметные рубрики: MICROSTRIP
FEATURES
Аннотация: New resonator design employing a hairpin stripline conductor with a stub situated on one side of a dielectric substrate and regular stripline conductors (connected to a screen) on the other side. Eigenfrequencies of the first three oscillation modes of this resonator can be made closer to each other, so that the resonances of two modes are involved in the formation of the passband while the third mode resonance forms a minimum of the transmission coefficient adjacent to the passband. A structure comprising four resonators of this type has the characteristic of an eighth-order bandpass filter arranged in a case with 45 × 16 × 6.25-mm internal dimensions possessing f0 = 0.52 GHz central frequency with a 14% relative bandwidth. The filter is highly selective due to the attenuation poles being close to the pass band and a wide high-frequency stopband extending above a fivefold f0 value at a level of –100 dB.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A. M., Leksikov An. A., Bal'va Y. F., Grushevskii E. O., Khodenkov S. A.
Заглавие : A highly selective stripline lowpass filter with more than 100-dB wide stopband attenuation
Коллективы : Ministry of Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation [02G25.31.0330]
Место публикации : Tech. Phys. Lett. - 2020. - Vol. 46, Is. 4. - P.364-367. - ISSN 1063-7850, DOI 10.1134/S1063785020040173. - ISSN 1090-6533(eISSN)
Примечания : Cited References: 8. - This study was supported in part by the Ministry of Education and Science of the Russian Federation in the framework of agreement no. 02G25.31.0330.
Аннотация: A new miniature design of a highly selective lowpass filter based on a suspended substrate with a two-sided stripline pattern has been developed. The filter frequency response slope (cutoff attenuation rate) and stopband attenuation depth are determined by transmission zeros, the number of which is equal to the filter order. An experimental prototype of a fifth-order lowpass filter on 0.5-mm-thick alumina substrate with dielectric permittivity ε = 9.8 has been synthesized with the aid of numerical electrodynamic analysis of a three-dimensional model. The cutoff frequency of the filter passband at a –1-dB level is fc = 1.75 GHz. The stopband width at a –100-dB attenuation level reaches 4.4fc.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Leksikov A. A., Serzhantov A. M., Govorun I. V., Afonin A. O., Ugryumov A. V., Leksikov An. A.
Заглавие : A method of stopband widening in BPF based on two-conductor suspended-substrate resonators
Место публикации : Prog. Electromagn. Res. Lett. - 2018. - Vol. 72. - P.11-16. - ISSN 19376480 (ISSN), DOI 10.2528/PIERL17102302
Примечания : Cited References: 10
Ключевые слова (''Своб.индексиров.''): fourth order--microwave bandpass filter--stopband--stripline resonators--suspended substrates--wide upper stopband
Аннотация: A method aiming to widen the upper stopband in a microwave bandpass filter based on two-conductor suspended-substrate stripline resonators is described in this letter. Applicability of the method is illustrated by simulating and fabricating fourth-order filter that has a very wide upper stopband: Δfstop/f0 = 7.92 measured at a level -50 dB, which is achieved because the widths of the inner resonators in the structure are 1.4 times greater than that of the outer ones.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A. M., Leksikov An. A., Bal'va Y. F., Galeev R. G.
Заглавие : A monolithic miniature multi-conductor strip-resonator bandpass filter
Место публикации : Tech. Phys. Lett. - 2021. - Vol. 47, Is. 9. - P.645-648. - ISSN 10637850 (ISSN), DOI 10.1134/S106378502107004X
Примечания : Cited References: 10. - This study was supported by the Ministry of Science and Higher Education of the Russian Federation, complex project “Creating High-Tech Production of Earth Stations of Advanced Satellite Communication Systems for Connectivity of Remote, Northern, and Arctic Territories of the Russian Federation” carried out with the participation of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, agreement no. 075-11-2019-078 dated December 13, 2019
Аннотация: A new monolithic design of a miniature bandpass filter for manufacture by means of multilayer printed-circuit-board technology has been developed. It is demonstrated using a fourth-order filter that multi-conductor strip resonators used in the design ensure both miniaturization and high selectivity of the device. The passband center frequency of the manufactured filter is f0 = 546 MHz, the fractional bandwidth is Δf/f0 = 25%, and the insertion loss is 0.8 dB. The filter has a wide high-frequency stopband, which extends up to a frequency of 10f0 at a level of –30 dB. The filter dimensions are 15.0 × 12.0 × 4.3 mm (0.027λ0 × 0.021λ0 × 0.007λ0, where λ0 is the wavelength in vacuum at frequency f0) and the mass is only 1.8 g. The performances of the filter and the accessibility of its design for surface mounting show that the device has great potential.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A. M., Bal'va Y. F., Leksikov An. A., Galeev R. G.
Заглавие : A new design of a miniature filter on microstrip resonators with an interdigital structure of conductors
Коллективы : Ministry of Education and Science of the Russian Federation [14.607.21.0039]
Место публикации : Tech. Phys. Lett.: MAIK Nauka-Interperiodica / Springer, 2015. - Vol. 41, Is. 5. - P.504-507. - ISSN 1063, DOI 10.1134/S1063785015050193. - ISSN 10906533(eISSN)
Примечания : Cited References:14. - This study was supported in part by the Ministry of Education and Science of the Russian Federation, project no. 14.607.21.0039.
Предметные рубрики: HAIRPIN RESONATORS
FEATURES
Аннотация: A microstrip bandpass filter of new design based on original resonators with an interdigital structure of conductors has been studied. The proposed filters of third to sixth order are distinguished for their high frequency-selective properties and much smaller size than analogs. It is established that a broad stop band, extending up to a sixfold central bandpass frequency, is determined by low unloaded Q of higher resonance mode and weak coupling of resonators in the pass band. It is shown for the first time that, as the spacing of interdigital stripe conductors decreases, the Q of higher resonance mode monotonically drops, while the Q value for the first operating mode remains high. A prototype fourth-order filter with a central frequency of 0.9 GHz manufactured on a ceramic substrate with dielectric permittivity ɛ = 80 has microstrip topology dimensions of 9.5 × 4.6 × 1 mm3. The electrodynamic 3D model simulations of the filter characteristics agree well with the results of measurements.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Khodenkov S. A., Leksikov An. A., Shabanov V. F.
Заглавие : A three-mode microstrip resonator and a miniature ultra-wideband filter based on it
Место публикации : Dokl. Phys.: Maik Nauka-Interperiodica Publishing, 2017. - Vol. 62, Is. 6. - P.289-293. - ISSN 10283358 (ISSN), DOI 10.1134/S102833581706009X
Примечания : Cited References: 14
Ключевые слова (''Своб.индексиров.''): bandpass filters--microwave filters--resonators--filter structures--high selectivity--microstrip resonator--oscillation mode--parametric synthesis--passband frequencies--ultra-wideband filters--wide band filter--microstrip filters
Аннотация: An original microstrip resonator design with a strip conductor split by a slot at one of its ends is investigated. It is demonstrated that at the optimal slot sizes, when the eigenfrequency of the second oscillation mode hits the center between the first and third oscillation modes, the resonator can work as a thirdorder bandpass filter. The structure formed from only two such resonators electromagnetically coupled by split conductor sections is a miniature six-order wideband filter with high selectivity. The test prototype of the filter with a central passband frequency of ~1.2 GHz and a passband width of ~0.75 GHz fabricated on a substrate ~(45 × 11 × 1) mm3 in size with a permittivity of 80 is characterized by minimum loss in a passband of 0.5 dB. The parametric synthesis of the filter structure was performed using electrodynamic analysis of the 3D model. The measured characteristics of the test prototype agree well with the calculated data.
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10.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A., Balva Y. F., Galeev R., Lemberg K., Leksikov An. A.
Заглавие : ALD stripline resonator and bandpass filters for VHF and UHF bands
Коллективы : IEEE MTT-S International Microwave Filter Workshop 2021
Место публикации : 2021 IEEE MTT-S International Microwave Filter Workshop, IMFW 2021: Institute of Electrical and Electronics Engineers, 2021. - 2021 IEEE MTT-S International Microwave Filter Workshop, IMFW 2021 (17 - 19 November 2021, Perugia, Italy) Conference code: 175723. - P.65-68. - , DOI 10.1109/IMFW49589.2021.9642365
Примечания : Cited References: 15
Аннотация: It is shown that for an optimal substrate thickness ALD technology will be promising for IF bandpass filter designing. A two-conductor stripline ALD resonator with central frequency 200 MHz will have Q-factor 53 with total length 3.7 mm (0.0025λg) and the frequency separation of the first and the second oscillation modes up to 59. Two bandpass filters for VHF and UHF designed and fabricated for commercial application display good agreement between the simulation and the experiment. A 3-pole bandpass filter with central frequency 255 MHz and lateral size 15.8×3.2 mm2 has stopband width 13.5f0 , and a 6-pole bandpass filter with central frequency 1250 MHz and lateral size 4.4×5.1 mm2 has stopband width 9.4f0.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A. M., Leksikov An. A., Bal'va Y. F., Grushevskii E. O.
Заглавие : An ultra-wideband stripline bandpass filter with a noise suppression level of more than 100 dB
Коллективы : Ministry of Science and Higher Education of the Russian Federation [075-11-2019-078]
Место публикации : Tech. Phys. Lett. - 2020. - Vol. 46, Is. 8. - P.787-791. - ISSN 1063-7850, DOI 10.1134/S1063785020080179. - ISSN 1090-6533(eISSN)
Примечания : Cited References: 9. - This work was financially supported by the Ministry of Science and Higher Education of the Russian Federation in the implementation of the integrated project "Creation of a production of earth stations of advanced satellite communications systems to ensure the coherence of hard, northern and Arctic territory of Russian Federation," implemented with the participation of the Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences|" (agreement number 075-11-2019-078 dated 13.12.2019)
Аннотация: An ultra-wideband bandpass filter formed by cascading of a novel high-pass filter (HPF) and a low-pass filter (LPF) on suspended substrates with a two-sided pattern of strip conductor has been investigated. The high selectivity of the HPF is ensured by the transmission zeros near the passband, the number of which is equal to the filter order. A second-order HPF has been designed on a 0.5-mm-thick substrate with a permittivity of ε = 9.8 using the numerical electrodynamic analysis of a 3D model of the filter. The experimental HPF prototype has a cutoff frequency of fb = 0.25 GHz at a level of –3 dB and a passband that extends to 5 GHz. The ultra-wideband bandpass filter formed by cascading of the LPF and the designed HPF has a fractional bandwidth of Δf/f0 = 150% with a central frequency of f0 = 1 GHz. It has the broad and deep high-frequency stopband, which extends to a frequency of 7.8f0 at a suppression level of –100 dB.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Leksikov Al. A., Serzhantov A. M., Tyurnev V. V., Bal'va Y. F., Leksikov An. A.
Заглавие : Bandpass filter with an ultra wide stopband designed on miniaturized coaxial resonators
Место публикации : J. Commun. Technol. Electron.: Pleiades Publishing, 2013. - Vol. 58, No. 2. - P.110-117. - DOI 10.1134/S1064226913020022
Аннотация: Characteristics of a new miniaturized coaxial resonator are theoretically investigated. It is shown that the first resonant frequency of the resonator can be significantly lowered relative to the second one and the resonator dimensions can be considerably decreased as compared to those of a traditional dielectric filled quarter wavelength coaxial resonator. Based on the investigated resonator, a fourth order bandpass filter has been designed and fabricated. The filter stopband at a level of no worse than –90 dB extends to the frequency that exceeds the passband center frequency by a factor of 47. Calculated frequency responses are in good agreement with those measured on the fabricated filter prototypes.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A. M., Balva Y. F., Galeev R. G., Leksikov An. A.
Заглавие : Design for a self-packaged aLl-PCB wideband filter with good stopband performance
Коллективы : IEEE/MTT-S International Microwave Symposium 2021
Место публикации : IEEE Trans. Compon. Packag. Manufact. Tech./ IEEE/MTT-S International Microwave Symposium 2021 (7-10 June 2021 ; Atlanta). - 2022. - Vol. 12, Is. 7. - P.1186-1195. - ISSN 21563950 (ISSN), DOI 10.1109/TCPMT.2022.3183581
Примечания : Cited References: 34. - This work was supported by the Ministry of Science and Higher Education of the Russian Federation, state assignment no. FEFE-2020-0013
Аннотация: A new design of a self-packaged all-PCB wideband filter based on the cascade connection of high-pass and low-pass filters is presented. The novel low-pass and high-pass quasi-lumped filter structure differs from the known ones by the existence of cross-coupling between elements producing transmission zeroes at the desired frequency. It is shown that high order structures make it possible to design a wideband filter having the number of transmission zeros in the low-frequency stopband equal to the order of the applied high-pass filter and the number of transmission zeros in the high-frequency stopband equal to half the order of the low-pass filter. An implementation of two-layer metallization of the capacitor plates made it possible to manufacture all three types of filters using the common technology of multilayer printed circuit boards with a good coincidence of the characteristics of the model and the fabricated filters. The filter fabricated using materials with a rather low-quality factor (F4BM/RO4450B/RO4003C) has demonstrated a good performance: the central frequency is 0.99 GHz, the 1 dB fractional bandwidth is 152%, the minimum in-band loss is 0.3 dB, the selectivity (Δf30dB/Δf3dB) is 1.21, and the 40-dB stopband width is 6.16f0.
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14.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A. M., Bal'va Y. F., Leksikov An. A.
Заглавие : Design for a self-packaged all-PCB wideband filter with good stopband performance
Коллективы : IEEE MTT-S International Microwave Symposium 2021, International Microwave Symposium 2021
Место публикации : IEEE MTT-S International microwave symposium: digest. - 2021. - Vol. 2021-June. - Ст.WeIF1-31. - P.581-584. - , DOI 10.1109/IMS19712.2021.9575012
Примечания : Cited References: 12
Аннотация: A new design of a self-packaged all-PCB ultrawideband filter based on the cascade connection of high-pass and low-pass filters is presented. The novel low-pass and high-pass quasi-lumped filter structure differs from the known one by the existence of cross-coupling between elements producing transmission zeroes at the desired frequency. The filter fabricated using materials with a rather low quality factor has demonstrated a good performance: the central frequency is 0.99 GHz, the 1 dB bandwidth is 151%, the minimum in-band loss is 0.3 dB, the selectivity (Δf 30dB /Δ f 3dB ) is 1.21, and the 40 dB stopband width is 6.10 f 0 .
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Balva Y. F., Leksikov An. A., Serzhantov A. M., Khodenkov S. A., Shumilov T. Y.
Заглавие : Features of characteristics of second-order bandpass filters based on half-wave and quarter-wave microstrip resonators
Место публикации : Russ. Phys. J. - 2022. - Vol. 65, Is. 2. - P.276-286. - ISSN 10648887 (ISSN), DOI 10.1007/s11182-022-02633-1
Примечания : Cited References: 37
Аннотация: A comparison is made of the characteristics of bandpass filters consisting of two interacting resonators, which are either half-wave or quarter-wave segments of microstrip transmission lines with the same widths of strip conductors. Plates with a thickness of 0.5 mm made of TBNS high-frequency ceramics with a relative permittivity ε = 80 were used as substrates for microstrip structures. The structures having a maximum coupling region of the resonators and the maximum value of their coupling to external ports with a wave impedance of 50 Ω were studied. The filters were tuned by selecting the gap between the strip conductors so that the maximum reflection level in the passband was equal to –20 dB. Electromagnetic simulation of 3D models showed that the fractional bandwidth of filters based on quarter-wave resonators is almost 2 times wider than the bandwidth of filters based on half-wave resonators, and this fact is confirmed by the measurement results. The discovered effect is explained by twice the characteristic impedance of a quarter-wave resonator relative to a half-wave one.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Serzhantov A., Leksikov Al. A., Bal'va Y. F., Leksikov An. A.
Заглавие : High-quality compact interdigital microstrip resonator and its application to bandpass filter
Место публикации : Prog. Electromagn. Res. C: Proceedings. - 2017. - Vol. 72. - P.91-103. - ISSN 19378718 (ISSN)
Примечания : Cited References: 27
Ключевые слова (''Своб.индексиров.''): alumina--bandpass filters--bandwidth--microwave filters--q factor measurement--resonators--alumina substrates--central frequency--fractional bandwidths--interdigital structures--its applications--microstrip resonator--number of fingers--unloaded quality factors--microstrip filters
Аннотация: A compact microstrip resonator based on the interdigital structure is proposed. The resonator has several times higher unloaded quality factor compared to similar resonators presented previously and can even reach the Q-factor of a regular λ/4 resonator. The size of the resonator can be significantly reduced with a substantial increase in quality factor by incrementing the number of fingers in the interdigital structure. In addition, for each gap between the fingers, there exist an optimal number of fingers that correspond to the maximum Q-factor. An extension of the upper stopband for a bandpass filter designed using the resonator can be achieved by the interconnection of the fingers in each of the comb structures. The simulation results are proven by fabricated resonators and a fourpole bandpass filter. For the central frequency of 2000 MHz and 16.2% fractional bandwidth, the lateral size of the filter is only 11.5mm × 3.8 mm for alumina substrate (eps = 9.8). The filter has an upper stopband up to 5.8f0 at the level −40 dB.
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17.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Govorun I. V., Afonin A. O., Ugryumov A. V., Solovev P. N., Leksikov An. A., Boev N. M.
Заглавие : Magnetic frequency doubler
Коллективы : International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices
Место публикации : 23rd IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2022: (30 June - 4 July 2022, Altai): IEEE Computer Society, 2022. - Vol. 2022-June. - P.135-139. - , DOI 10.1109/EDM55285.2022.9855072
Примечания : Cited References: 10. - This work was supported by the Russian Science Foundation under Grant No. 19-72-10047. The equipment of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” was used during the measurement
Аннотация: This article presents the compact magnetic frequency doubler based on a quarter-wavelength stepped-impedance microstrip resonator with a 125-nm-thick permalloy (Ni 70 Fe 30 ) magnetic film. For the first time, the implementation of a frequency doubler operating at the high-field peak is shown. To produce a uniform magnetic field in the thin magnetic film plane, the magnetic system consisting of individual permanent magnets and based on the circular Halbach array was developed. The uniformity of the magnetic field in the region of 10×10 mm2 was 4.9%. Two bandpass filters were developed. The input filter serves to purify the input signal from parasitic harmonics. The output filter blocks the input signal in the resonator. The resonator, magnetic system, input and output filters are integrated into a single device. The maximum measured conversion efficiency was 0.97% (at 1 GHz) at the input power of 4800 mW. The −3 dB fractional bandwidth of the magnetic frequency doubler was 2.15%.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volkov N. V., Eremin E. V., Rauckii M. V., Shaikhutdinov K. A., Petrov M. I., Leksikov An. A.
Заглавие : Magnetically driven high-frequency rectification in a cooperative system of magnetic tunnel junctions: Frequency dependence
Место публикации : J. Magn. Magn. Mater. - 2011. - Vol. 323, Is. 7. - P.1001-1005. - APR. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2010.11.096
Примечания : Cited Reference Count: 9. - Гранты: This study was supported by the Russian Foundation for Basic Research, Project no. 08-02-00259-a and the Division of Physical Sciences of the Russian Academy of Sciences, Program "Spin-dependent Effects in Solids and Spintronics", Project no. 2.4.2 of the Siberian Branch of the RAS, and Integration Programs of the Siberian Branch of the RAS, Projects nos. 5 and 134.Финансирующая организация: Russian Foundation for Basic Research [08-02-00259-a]; Division of Physical Sciences of the Russian Academy of Sciences; Siberian Branch of the RAS [2.4.2, 5, 134]
Ключевые слова (''Своб.индексиров.''): magnetic tunnel junction--high-frequency rectification--spintronics--high-frequency rectification--magnetic tunnel junction--spintronics--absorption lines--conducting grains--cooperative systems--different frequency--frequency dependence--high frequency hf--magnetic field dependences--magnetic tunnel junction--microwave radiations--polycrystalline--radiation frequencies--ramified network--rectification effects--rectified voltage--spin-polarized currents--spintronics--electric rectifiers--magnetic devices--magnetic fields--magnetic resonance--manganese oxide--nanotechnology--tunnel junctions
Аннотация: The effect of magnetically driven high-frequency rectification in a polycrystalline La0.7Ca0.3MnO3 manganite has been measured at different frequencies of microwave radiation. The magnetic field dependence of a rectified voltage has a broad peak resembling an absorption line, whose shape and position are determined by the radiation frequency. The rectification effect in a polycrystalline manganite sample is related to a ramified network of magnetic tunnel junctions, which is formed by ferromagnetic conducting grains with insulator boundaries. The results of measurements are consistent with a model for the magneto-dependent rectification effect based on the interplay between a spin-polarized current through the tunnel junctions and magnetic resonance induced in the grains forming the junctions. (C) 2010 Elsevier B.V. All rights reserved.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Lemberg K. V., Serzhantov, Alexey M., Leksikov Al. A., Bal'va Y. F., Leksikov An. A.
Заглавие : Magnetically tunable resonant phase shifters for UHF band
Коллективы : Ministry of Education and Science of the Russian Federation [3.528.2014K]
Место публикации : IEEE Trans. Magn.: IEEE-Institute Electrical and Electronics Engineers, 2015. - Vol. 51, Is. 6. - Ст.4003205. - ISSN 0018, DOI 10.1109/TMAG.2014.2368513. - ISSN 19410069(eISSN)
Примечания : Cited References:22. - This work was supported by the Ministry of Education and Science of the Russian Federation, task no. 3.528.2014K.
Предметные рубрики: FERROMAGNETIC-RESONANCE
COMPACT
SPECTROMETER
FERRITE
FILMS
LINE
Ключевые слова (''Своб.индексиров.''): ferrite--microstrip structure--microwave--tunable phase shifter
Аннотация: This paper presents a new type of magnetically tunable phase shifter. The shifter has the structure of microstrip bandpass filter on a substrate containing magnetic material whose magnetic permeability is controlled by magnetic field due to ferromagnetic resonance. The phase shifter's operation is based on the fact that phase shift in a bandpass filter changes with tuning of its central frequency. Two types of devices were designed and fabricated for the UHF band. One of them has a five-layer NiFe film as an active medium and demonstrates a figure of merit of 40°/dB achieved already at 20 Oe of the controlling magnetic field in 10% of the relative operational bandwidth. The second device with YIG ferrite as an active medium gave 360° tunable phase shift in 5% operational bandwidth that corresponds to the figure of merit of 150°/dB (3.1°/dB·Oe).
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Izotov A. V., Leksikov An. A.
Заглавие : Micromagnetic calculation of the equilibrium distribution of magnetic moments in thin films
Коллективы :
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2010. - Vol. 52, Is. 8. - P1664-1672. - ISSN 1063-7834, DOI 10.1134/S1063783410080160
Примечания : Cited References: 17. - This study was supported by the Council on Grants from the President of the Russian Federation (grant no. 3818.2008.3), the Siberian Branch of the Russian Academy of Sciences (integration project no. 5), the Presidium of the Russian Academy of Sciences (project no. 27.1), and the Ministry of Education and Science of the Russian federation (state contract nos. 02.740.11.0220 and 02.740.11.0568.
Предметные рубрики: SIMULATIONS
ANISOTROPY
NANOPARTICLES
MODES
Аннотация: A new approach has been proposed for determining an equilibrium configuration of magnetic moments in condensed matter in terms of its discrete model. The solution to this problem is reduced to a system of linear inhomogeneous equations with undetermined Lagrange multipliers. The possibility of numerically solving these systems has been shown using a modified power method. The efficiency of the method has been demonstrated for the model of a thin magnetic film with a nonuniform distribution of the uniaxial magnetic anisotropy over the area. The dependence of the coercive force on the uniaxial anisotropy of nanocrystallites, their exchange interaction, and other parameters of samples has been investigated.
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