2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES最新文献

Microwave emission properties of a precipitating atmosphere with respect to remote sensing of precipitation from space by means of microwave radiometry 降水大气的微波发射特性与用微波辐射测量法从空间遥感降水的关系

2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES Pub Date : 2010-06-21 DOI: 10.1109/MSMW.2010.5545988

B. Kutuza

{"title":"Microwave emission properties of a precipitating atmosphere with respect to remote sensing of precipitation from space by means of microwave radiometry","authors":"B. Kutuza","doi":"10.1109/MSMW.2010.5545988","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5545988","url":null,"abstract":"The study of precipitation at the observation of the Earth from space is one of the important problems of remote sensing. For the first time the possibility of estimation of rain intensity by upwelling Earth radiation was shown by the experiment conducted on the satellite “Kosmos-243” in 1986 [1]. Areas of precipitation falling over sea surface were registered by typical emission of brightness temperature at wavelengths of 0.8, 1.35 and 3.2 cm. By the magnitude of emission several rain intensity levels may be distinguished. Further development of precipitation observation from space is related with American satellite DMSP with microwave radiometric system SSM/I [2], which received radiation in a wide range of wavelengths from 0.35 to 1.6 cm. This system made it possible to carry out the study of precipitation fields over the surface and sea. The precipitation in radiometric images appeared as areas with lower brightness temperature at 0.35 cm wavelength. This is accounted for by the increase of the Earth albedo due to multiple microwaves scattering on large rain drops. Over recent years the remote sensing of precipitation was conducted on Japan-USA satellite TRMM. A large project GPS (Global Precipitation Mission) is under preparation.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114971055","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}

引用次数: 0

Development of powerful terahertz gyrotrons 强大太赫兹回旋管的发展

2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES Pub Date : 2010-06-21 DOI: 10.1109/MSMW.2010.5545997

M. Glyavin, A. Luchinin, V. Manuilov, M. Moiseev, A. Sedov, V. Zapevalov

引用次数: 2

Calculation of transmitted characteristics for metal waveguides in terahertz range 太赫兹金属波导传输特性的计算

2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES Pub Date : 2010-06-21 DOI: 10.1109/MSMW.2010.5546044

A. V. Volodenko, O. Gurin, A. Degtyarev, V. Maslov, V. Svich, A. N. Topkov

{"title":"Calculation of transmitted characteristics for metal waveguides in terahertz range","authors":"A. V. Volodenko, O. Gurin, A. Degtyarev, V. Maslov, V. Svich, A. N. Topkov","doi":"10.1109/MSMW.2010.5546044","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5546044","url":null,"abstract":"We have studied theoretically and experimentally the spectral features of circular metal waveguides at terahertz wavelengths. For the first time it is shown that in the far region of the terahertz frequency range, where the conductivity of metal is high, at a wavelength of the transmitted radiation more than 50 µm spectrum of the waveguide can be represented by classical modal composition in the approximation of the ideal metal. In the near part of the terahertz range, where the conductivity of the metal substantially lower spectrum of waveguide modes of a hollow metallic waveguide can be described by a set of hybrid modes. The presence of the transition region in the behavior of electrodynamic properties of metallic waveguides in the wavelength range λ = 20 − 50 µm is founded. In this range the key parameter for estimation of the applica-bility of the mode approaches is the ratio of the exciting beam radius w to the waveguide radius a (w0 = w/a). Thus, when analyzing the transmission of terahertz laser radiation on small sized metal waveguide (a/γ ≤ 50) using in calculating the approximation of hybrid modes can only be justified if the excitation waveguides relatively high in relation to the radius of the waveguide beam radiation (w0 > 0,4). In the case of excitation of waveguides by narrow beams of radiation (w0 < 0,4), metal waveguides can retain electromagnetic properties inherent in the ideal metal waveguides.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116856884","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}

引用次数: 0

Super-algebraically convergent mathematical model of hollow waveguldes by Analytical Regularization Method 用解析正则化方法建立空心波导的超代数收敛数学模型

2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES Pub Date : 2010-06-21 DOI: 10.1109/MSMW.2010.5546203

Y. Tuchkin, O. Suvorova, F. Dikmen

引用次数: 1

Cell for measurement of dielectric permittivity of solutions 测量溶液介电常数的电池

2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES Pub Date : 2010-06-21 DOI: 10.1109/MSMW.2010.5546085

G. Glibitskiy, V. Maleev, E. V. Izhyk

{"title":"Cell for measurement of dielectric permittivity of solutions","authors":"G. Glibitskiy, V. Maleev, E. V. Izhyk","doi":"10.1109/MSMW.2010.5546085","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5546085","url":null,"abstract":"The cell for measurement of dielectric permittivity is intended for research of properties of water solutions in the range of temperatures from 0 to 70°C in a range of frequencies of 30–40 GHz. The simplified construction of a cell is presented on Fig.1. The cell consists of the camera for solution and insert. The camera for a solution consists from waveguide flange with a segment of a circular waveguide 1, capacities for a solution 2, insert for the thermometer 3 with an entry branch pipe for flood filling of a solution, an output branch pipe for change of a solution 4. The segment of a circular waveguide has round deepening for glass tight laying from side capacities for a solution. The insert consists from waveguide a flange with a segment of a circular waveguide 5 and tanks 6 with a cylindrical part. The tank has round deepening for glass tight laying from side capacities for a solution also. Glass tight layings are pasted compound glue. The camera and an insert are made of stainless steel and incorporate by screws. Laying from high-temperature moisture resistant rubber is allocated between the camera and an insert for hermetic connection. The camera and insert have plane side surfaces. Heating units are attached to these surfaces by means of slices. The heating unit represents twelve ceramic resistances (on six cells from each side) with admissible power of 10 Watt everyone and with rating value of 72 Ohm. Resistances are connected in a parallel way. For cell heating the heating unit was connected to an alternating voltage source which regulated a range from 5 to 10 Volt so that speed of heating of a solution in a cell was no more than one degree for two minutes.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125956043","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}

引用次数: 0

Microwave and THz applications of ferroelectrics and multiferroics 铁电体和多铁体的微波和太赫兹应用

2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES Pub Date : 2010-06-21 DOI: 10.1109/MSMW.2010.5545991

S. Gevorgian, A. Vorobiev

引用次数: 3

Ambipolar semiconductor receiver application in THz range 太赫兹范围内双极半导体接收机的应用

2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES Pub Date : 2010-06-21 DOI: 10.1109/MSMW.2010.5546030

Y. Kamenev, V. Korzh, F. Sizov, N. Momot

引用次数: 0

Modified nagy kernels in digital UWB signal processing 数字超宽带信号处理中的改进核算法

2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES Pub Date : 2010-06-21 DOI: 10.1109/MSMW.2010.5546018

V. Kravchenko, D. Churikov

引用次数: 0

Approximating properties of artificial neural network in time domain for the analysis of electromagnetic fields reflected from model of human body surface 人体体表模型反射电磁场分析的人工神经网络时域逼近特性

2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES Pub Date : 2010-06-21 DOI: 10.1109/MSMW.2010.5546075

O. Dumin, D. Shyrokorad, O. Dumina, V. Katrich, V. Chebotarev

{"title":"Approximating properties of artificial neural network in time domain for the analysis of electromagnetic fields reflected from model of human body surface","authors":"O. Dumin, D. Shyrokorad, O. Dumina, V. Katrich, V. Chebotarev","doi":"10.1109/MSMW.2010.5546075","DOIUrl":"https://doi.org/10.1109/MSMW.2010.5546075","url":null,"abstract":"The approximating properties of artificial neural network for the problem of determination of thickness a layer of layered medium by means of the analysis of reflected impulse electromagnetic fields are considered. The impulse fields are reflected from the model of human body surface. The normal incidence of plane wave with Gaussian time form on the layered medium with losses is considered. The reflected electromagnetic field is obtained by FDTD method. Initial data for neural network analysis are the values of amplitude of electrical component of reflected field in different moments of time. So, the analysis is performed in time domain directly. As an example, the network is trained to determine the thickness of one of the layers of the medium. The stability of the determination in presence of interferences, experimental errors and instabilities of medium parameters is investigated. The approximating properties of the artificial neural network are considered for the smooth change of the second layer thickness.","PeriodicalId":129834,"journal":{"name":"2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122489819","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}

引用次数: 11

Optimization of an x-band TWT a using MAGIC PIC-FDTD code 使用MAGIC PIC-FDTD代码优化x波段行波管

2010 INTERNATIONAL KHARKOV SYMPOSIUM ON PHYSICS AND ENGINEERING OF MICROWAVES, MILLIMETER AND SUBMILLIMETER WAVES Pub Date : 2010-06-21 DOI: 10.1109/MSMW.2010.5546205

H. Farhang, M. Bardegar, A. Mohammad, H. Farahmandzad

引用次数: 2