Zobrazeno 1 - 10
of 22
pro vyhledávání: '"A. Sh. Fiks"'
Publikováno v:
Radiophysics and Quantum Electronics. 63:321-331
Coherent subterahertz radiation in the continuous-wave regime was obtained in a large-orbit gyrotron (LOG) operated at a high harmonic of the cyclotron frequency. An electron–optical system containing a gun with a cusp followed by a section of adia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::625ad34c8061cf5ca42c09a23caf89b2
https://doi.org/10.1007/s11141-021-10057-z
https://doi.org/10.1007/s11141-021-10057-z
Autor:
I. Sh. Fiks, G. E. Fiks
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 82:530-535
A system for the active suppression of sound with an open-loop feedback is described in relation to problems of the sound insulation of devices that radiate at discrete frequencies. Its principle of operation is based on creating a compensating field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e6da1b8987f2ee47e5d9220bd82cca6
https://doi.org/10.3103/s1062873818050106
https://doi.org/10.3103/s1062873818050106
Autor:
I. Sh. Fiks, G. E. Fiks
Publikováno v:
Radiophysics and Quantum Electronics. 60:485-493
We study the efficiency of the systems of active compensation for acoustic monochromatic signals having inexactly known frequencies. The studies are performed in the frequency domain for openloop systems.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe122f3208c509790d47c471b88031b8
https://doi.org/10.1007/s11141-017-9817-8
https://doi.org/10.1007/s11141-017-9817-8
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
Coherent subterahertz radiation is achieved for the first time in the large-orbit gyrotron operating at a higher cyclotron harmonic in the continuous-wave generation regime. A stable generation is achieved in the case of operation at the third and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee7302c4ed766f7044713465834bd78a
https://doi.org/10.1109/irmmw-thz.2019.8874062
https://doi.org/10.1109/irmmw-thz.2019.8874062
Publikováno v:
Acoustical Physics. 62:207-214
Practical implementation of an active sound control system ensuring sound suppression in outer space is described as applied to sound insulation problems for equipment whose total noise level is mainly due to low-frequency discrete spectral component
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a16dde2d4a14374ddab2240685e1cf4
https://doi.org/10.1134/s1063771016020056
https://doi.org/10.1134/s1063771016020056
Publikováno v:
Applied Physics Letters. 114:213502
Coherent subterahertz radiation is achieved in an electron cyclotron maser (large-orbit gyrotron configuration) operating at a higher cyclotron harmonic in the continuous-wave generation regime. This auto-oscillator is based on the use of a gun with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6901340600214248f0f50a116fa29e9
https://doi.org/10.1063/1.5094875
https://doi.org/10.1063/1.5094875
Autor:
I. Sh. Fiks
Publikováno v:
Radiophysics and Quantum Electronics. 55:280-287
We consider an external problem of diffraction by compact bodies, for which the region containing a set of singularities of the analytic continuation of the wave field is known. The approach to solution of this problem is based on representing the sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1a62b93ea4e6c3b57026f67de9a832d
https://doi.org/10.1007/s11141-012-9367-z
https://doi.org/10.1007/s11141-012-9367-z
Publikováno v:
Acoustical Physics. 58:368-373
A method is considered for measuring the radiation levels of extended spatially uncorrelated sound sources in the near field in the case of their imprecise positioning with respect to the measurement system—a linear antenna array. An algorithm is p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::898104fd5609141cf9a9d0f57a4d3ed9
https://doi.org/10.1134/s1063771012030128
https://doi.org/10.1134/s1063771012030128
Autor:
G. E. Fiks, I. Sh. Fiks
Publikováno v:
Radiophysics and Quantum Electronics. 54:284-293
We propose a method for determining the radiation pattern of an elongated source by near-field pressure measurements. The method is based on parameterization of the transducer by a set of spherical sources. The parameters (spherical-harmonic amplitud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b68c6d39defad2e4e5591067e2a91245
https://doi.org/10.1007/s11141-011-9290-8
https://doi.org/10.1007/s11141-011-9290-8
Autor:
I. Sh. Fiks, G. E. Fiks
Publikováno v:
Acoustical Physics. 57:454-459
A method of determining the field of a radiator from pressure measurements in its near zone is proposed. The method is based on parametrization of the field by a set of complex spherical sources. The field of the radiator is calculated using the sphe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dda4335ecdf889ddbfbc58caaa14b37b
https://doi.org/10.1134/s1063771011040038
https://doi.org/10.1134/s1063771011040038