{"title":"Superconducting 300 MHz Phased-Array for Magnetic Resonance Imaging Applications","authors":"J. Wosik, M. Kamel, L. Xue, L. Xie, K. Nesteruk","doi":"10.1109/MSMW.2007.4294594","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294594","url":null,"abstract":"This article reports on the development of superconducting phased-arrays by presenting a 300-MHz high critical temperature superconductors (HTS) array for imaging small animals for functional MRI of a rat brain and for high resolution imaging of spine injuries. Two four-element arrays are designed according to the requirements imposed by cryogenics and superconductor epitaxial technology limitations, with one made of copper and the other with HTS epitaxial YBa2Cu3O7-x thin films.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"14 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125990159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Low-Noise, High Dynamic Range Digital Receiver/Spectrometer for Radio Astronomy Applications","authors":"R. Kozhyn, V. Vynogradov, Dmytro M. Vavriv","doi":"10.1109/MSMW.2007.4294797","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294797","url":null,"abstract":"In this paper, a recently developed digital receiver which satisfies to a large extent the modern requirements to such devices is presented. This receiver has been tested at the decameter radio telescope UTR-2. It is well known that the negative impact of radio frequency interference (RFI) on the quality of data is a matter of increasing concern especially for the low frequency radio astronomy.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126571365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. V. Volodenko, O. Gurin, A. Degtyarev, V. Maslov, V. Svich, A. N. Topkov
{"title":"Waveguide Quasi-Optical Resonator with the Spherical Convex Reflector for Formation of the Uniform Output Beam","authors":"A. V. Volodenko, O. Gurin, A. Degtyarev, V. Maslov, V. Svich, A. N. Topkov","doi":"10.1109/MSMW.2007.4294612","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294612","url":null,"abstract":"This paper describes the phase conjugation method for producing non-Gaussian light beams with the given profile of intensity distribution in waveguide resonators. The existence of beams with super-Gaussian profile of intensity of a field in such resonators is confirmed theoretically and experimentally.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126580910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Varavin, G. Ermak, P. Poznahirev, J. Niemeyer, V. Anikin, A. Kolbasin, E. Lagutin
{"title":"V-Band Frequency Synthesizer for Irradiation of Josefson Array Junction in Voltage Unity Standard","authors":"A. Varavin, G. Ermak, P. Poznahirev, J. Niemeyer, V. Anikin, A. Kolbasin, E. Lagutin","doi":"10.1109/MSMW.2007.4294840","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294840","url":null,"abstract":"The V-band frequency synthesizer is presented including: a microwave voltage-controlled oscillator (VCO), a microstrip coupler, a 3-stage 25 dB centimeter-wave power amplifier, an active high-order IMPATT-diode multiplier, a band-pass filter, and an output isolator. The signal from the VCO tunable in the 7.00-7.10 GHz band throw a microstrip coupler goes to the power amplifier. After the amplification the signal passes to the multiplier, tuned to the 10th harmonic of the VCO operating frequency. This signal is amplified and then multiplied in 10 times by the IMPATT-diode multiplier.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125156337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Current Instabilities under Millimeter and Submillimeter Electromagnetic Waves Heating in Semiconductors with Negative Differential Conductivity","authors":"Y. Gurevich, G. Logvinov","doi":"10.1109/MSMW.2007.4294657","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294657","url":null,"abstract":"In this article, the formation of static negative differential conductance (NDC) under simultaneous electron gas heating by high-frequency (HF) and static electric fields is studied. As in this case, the heating electromagnetic wave has a pronounced effect on appearance of NDC caused by the overheating mechanisms and on the type of the static current-voltage characteristic (CVC), as a whole.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124144760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. K. Kiseliov, Y. Kuleshov, V. Makolinets, M. S. Yanovsky, V. Radionov, B. N. Shevtsov, Z.N. Danischuk
{"title":"Influence of Low-Energetic Submillimeter Laser Radiation on Posttraumatic Skin Wounds","authors":"V. K. Kiseliov, Y. Kuleshov, V. Makolinets, M. S. Yanovsky, V. Radionov, B. N. Shevtsov, Z.N. Danischuk","doi":"10.1109/MSMW.2007.4294856","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294856","url":null,"abstract":"In this paper, the next submillimeter radiation parameters with 0.337 mm wavelength: 5-7 irradiation procedures with energy density flow 0.4 mW/sm2 was proposed for clinical aprobation of physiotherapeutic method.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124279932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Parametrically-Controlled Metallodielectric Magnetophotonic Crystals","authors":"A. I. Pavlov, S. Tarapov","doi":"10.1109/MSMW.2007.4294620","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294620","url":null,"abstract":"In this paper, it was shown that when used in 1D photonic and magnetophotonic crystals of millimeter and sub-millimeter range, thin (1..10 nm) metallic layers can be used to smoothen the zone structure and narrow the reflection bands. The electromagnetic energy is split into absorbed and reflected waves; the transmission is very low and can be neglected. Due to the very low ratio of it's optical depth (equal to it's geometrical depth divided by it's refractive index) to the wavelength, the metallic layer doesn't bring any additional pass or stop bands into the photonic crystal's (PC) zone structure. The strength of the spectrum smoothing and reflection band narrowing effect increases proportionally to the thickness and electric conductivity of the metallic layer, and decreases proportionally to the distance between the adjacent metallic layers (i.e. the summed thickness of the two paramagnetic/dielectric layers). The effect doesn't depend on permittivity and permeability of the metal (again, due to it's low optical depth). With metallodielectric magnetophotonic crystals it becomes possible to effectively shift the reflectivity zone(s) by means of external magnetic field. Tuning range will depend on the initial paramagnetic susceptibility and the width of the resonant curve.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124996211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. A. Berezhnoy, Yury Demjanenko, Y. Muskin, B. Ivanov, V. Kuzhel, M. Kolisnichenko, V. Chmil, B. I. Yushchenko, P. A. Yatsik, Y. Sidorenko, V. Antyufeev, V. Bykov
{"title":"Radiometry Complex «ZIR», for High-Speed Radio-Wave Imaging","authors":"V. A. Berezhnoy, Yury Demjanenko, Y. Muskin, B. Ivanov, V. Kuzhel, M. Kolisnichenko, V. Chmil, B. I. Yushchenko, P. A. Yatsik, Y. Sidorenko, V. Antyufeev, V. Bykov","doi":"10.1109/MSMW.2007.4294849","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294849","url":null,"abstract":"The results of design and investigations of 86hellip100 GHz band stationary radio-wave imaging complex are represented.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122126043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Tarchi, K. Lukin, D. Leva, J. Fortuni, A. Mogila, P. Vyplavin, A. Sieber
{"title":"Implementation of Noise Radar Technology in Ground Based SAR for Short Range Applications","authors":"D. Tarchi, K. Lukin, D. Leva, J. Fortuni, A. Mogila, P. Vyplavin, A. Sieber","doi":"10.1109/MSMW.2007.4294690","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294690","url":null,"abstract":"In this paper, results of implementation of noise radar technology in X-band narrowband ground based (GB) synthetic aperture radar (SAR) were presented. The radars under consideration use noise waveform (NW) as a probe signal and perform the range focusing by correlating the radar returns with a reference signal taken before transmission, while the way the azimuth compression is done is similar to that of the conventional SAR. Evaluation of the phase measurements precision with the help of GB NW SAR was carried out on the basis of the obtained interferograms. It has been shown that both NW SAR systems provide quite high precision of displacement measurements.It was also demonstrated that noise radar technology may provide rather high performance of radar designed for short range applications with interferometric capabilities including ground based SAR and d-InSAR systems.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125534597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Antonov, V. Buts, A. M. Egorov, O. F. Kovpik, E. A. Kornilov, V. G. Svichenskij, A. Tolstoluzhsky
{"title":"Excitation of Short-Wave Radiation by Nonrelativistic Oscillators","authors":"A. Antonov, V. Buts, A. M. Egorov, O. F. Kovpik, E. A. Kornilov, V. G. Svichenskij, A. Tolstoluzhsky","doi":"10.1109/MSMW.2007.4294737","DOIUrl":"https://doi.org/10.1109/MSMW.2007.4294737","url":null,"abstract":"Sources of intensive coherent short-wave radiation up to X-ray can be created by radiation of high numbers harmonics by an ensemble of nonrelativistic oscillators moving in periodically inhomogeneous medium or in external space-periodic potential. The mechanism of harmonics excitation is investigated in a microwave range.","PeriodicalId":235293,"journal":{"name":"2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)","volume":"1101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123344509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}