Zobrazeno 1 - 10
of 11
pro vyhledávání: '"V. V. Khodos"'
Publikováno v:
Radiophysics and Quantum Electronics. 47:916-920
We present a new method for measurement of the microwave power based on the analysis of transient signals of gas molecules. These signals arise due to the phase switch of microwave radiation, which interacts with molecular rotational transition with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ad4a0776bde1932df3c9e928849a049
https://doi.org/10.1007/s11141-005-0032-7
https://doi.org/10.1007/s11141-005-0032-7
Publikováno v:
The European Physical Journal Applied Physics. 25:203-208
We propose a new method of molecular microwave spectroscopy together with analysis of resonance line shapes, based on the fast passage effect. The fast passage effect is the excitation of coherent spontaneous radiation of tested molecules using a fas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e1a4e421a97980e616e14b54e66d51e
https://doi.org/10.1051/epjap:2004008
https://doi.org/10.1051/epjap:2004008
Autor:
P.R. Wesselius, Sergey V. Shitov, Vladimir L. Vaks, Valery P. Koshelets, Lyudmila V. Filippenko, P. N. Dmitriev, Willem Vreeling, Pavel A. Yagoubov, V. V. Khodos, A.B. Ermakov
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 13:684-687
A submillimeter heterodyne spectrometer employing a superconducting local oscillator is demonstrated for the first time. The sensor chip comprises a quasioptical double-dipole lens-antenna SIS mixer (T/sub RX/=250 K at 380 GHz), a Josephson flux-flow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3eeae8ce225c86b06b653d2cc491ef2d
https://doi.org/10.1109/tasc.2003.813998
https://doi.org/10.1109/tasc.2003.813998
Autor:
Valery P. Koshelets, P.R. Wesselius, Pavel N. Dmitriev, Vladimir L. Vaks, Andrey L. Pankratov, Andrey M. Baryshev, Alexander S. Sobolev, V. V. Khodos, Jesper Mygind
Publikováno v:
Physica C: Superconductivity. :316-321
A combination of wide-band electronic tunability and moderate free-running line width makes the Josephson flux flow oscillator (FFO) a perfect on-chip local oscillator for integrated submillimeter-wave SIS receivers. The possibility of FFO phase lock
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3a93a1c45b14891c88fc91126776f3c
https://doi.org/10.1016/s0921-4534(02)00659-7
https://doi.org/10.1016/s0921-4534(02)00659-7
Autor:
Valery P. Koshelets, P.R. Wesselius, A.B. Ermakov, Andrey M. Baryshev, Sergey V. Shitov, Pavel N. Dmitriev, Vladimir L. Vaks, Jesper Mygind, Lyudmila V. Filippenko, V. V. Khodos
Publikováno v:
Physica C: Superconductivity. 367:249-255
Presently a Josephson flux flow oscillator (FFO) appears to be the most developed superconducting on-chip local oscillator for integrated submillimeter-wave SIS receivers. The feasibility of phase locking the FFO to an external reference oscillator a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02b12db8509d2320dbc95504631d1512
https://doi.org/10.1016/s0921-4534(01)01046-2
https://doi.org/10.1016/s0921-4534(01)01046-2
Autor:
Pete Cariani, Gary Macias, Chuck Randall, Rahn Merrill, Justin Michael Bode, Josh Gleason, Jack Cross, Dean Rudy, V. V. Khodos, Alexander Brailovsky
Publikováno v:
SPIE Proceedings.
Sierra Nevada Corporation (SNC) has developed an enhanced vision system utilizing fast-scanning 94 GHz radar technology to provide three-dimensional measurements of an aircraft’s forward external scene topography. This threedimensional data is rend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e165cf371b11f20910c3f128c8d8433
https://doi.org/10.1117/12.2053084
https://doi.org/10.1117/12.2053084
Publikováno v:
Review of Scientific Instruments. 70:3447-3453
A submillimeter spectrometer for measurements of low concentrations in gas mixtures is developed and created. The radiation source is a 260–380 GHz backward wave oscillator (BWO). The BWO frequency is stabilized by means of a reference microwave ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daeac31f754e3523028f9f88c737acb6
https://doi.org/10.1063/1.1149935
https://doi.org/10.1063/1.1149935
Publikováno v:
International Journal of Infrared and Millimeter Waves. 20:883-896
We study the problem of reaching maximal sensitivity of microwave spectrometers. The comparative analysis of the spectroscopy methods is carried out. Novel method based on the phase switching of radiation is presented. The calculation carried out sho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e85fc0dd644a302a816de36e867e8f0
https://doi.org/10.1023/a:1021774217938
https://doi.org/10.1023/a:1021774217938
Autor:
Gary Voronel, Vladimir I. Litvinov, Lev S. Sadovnik, Irina Gordion, Mikhail Felman, Dexin Jia, Vladimir A. Manasson, V. V. Khodos, Mark Aretskin, Ilya Gurin, Alexander Brailovsky, Aramais Avakian
Publikováno v:
SPIE Proceedings.
A W-band target glint and background scene generator is developed for compact range hardware-in-the-loop (HWIL) seeker testing and characterization. The device comprises an Electronically Controlled Beamformer (ECB) capable of real time generation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9905ee711d6fd64c5d50e984766e2954
https://doi.org/10.1117/12.664201
https://doi.org/10.1117/12.664201
Publikováno v:
SPIE Proceedings.
The noise generator based on the backward wave oscillator (BWO) in 370-535 GHz frequency range has been constructed. The noise spectrum width can be varied from 1 GHz to entire BWO range of operation. The maximum noise temperature is not less than i0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2564ecaccb894c0c015340fa44d41c13
https://doi.org/10.1117/12.627744
https://doi.org/10.1117/12.627744