Pub Date : 2016-10-27DOI: 10.1109/UWBUSIS.2016.7724186
Roman Zhohov, S. Bunin, K. Halonen
An improved detection scheme is proposed for noncoherent impulse radio ultra-wideband (IR-UWB) receivers. The peak amplitude of impulse and RMS value of noise are considered as detection parameters in the proposed method. The receiver based on this method, unlike conventional energy detection (ED) based receivers, does not collect the energy and uses UWB pulses as time triggers. Furthermore, we propose the digital signal processing technique to simplify UWB networking and enhance detection. Proposed solution simplifies the threshold setting and allows to decrease bit-error-rate (BER) for additive white Gaussian noise (AWGN) channel.
{"title":"Improved detection scheme for non-coherent UWB communications","authors":"Roman Zhohov, S. Bunin, K. Halonen","doi":"10.1109/UWBUSIS.2016.7724186","DOIUrl":"https://doi.org/10.1109/UWBUSIS.2016.7724186","url":null,"abstract":"An improved detection scheme is proposed for noncoherent impulse radio ultra-wideband (IR-UWB) receivers. The peak amplitude of impulse and RMS value of noise are considered as detection parameters in the proposed method. The receiver based on this method, unlike conventional energy detection (ED) based receivers, does not collect the energy and uses UWB pulses as time triggers. Furthermore, we propose the digital signal processing technique to simplify UWB networking and enhance detection. Proposed solution simplifies the threshold setting and allows to decrease bit-error-rate (BER) for additive white Gaussian noise (AWGN) channel.","PeriodicalId":423697,"journal":{"name":"2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122571863","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}
Pub Date : 2016-09-01DOI: 10.1109/UWBUSIS.2016.7724165
A. Butrym
Mode Expansion in Time Domain method is based on expansion of transient fields in a waveguide onto a basis of frequency independent coupled mode configurations with mode amplitudes being functions of longitudinal coordinate and time. In this paper the method is applied to a regular waveguide with smoothly varying transverse inhomogeneous dielectric filling (for example, slanted boundary). Approaches to constructing the bases and the corresponding waveguide evolutionary equations are discussed and compared against purely numerical solution based on full wave FDTD modeling.
{"title":"Mode Expansion in Time Domain technique for short pulse propagation in a regular waveguide with inhomogeneous smooth varying filling","authors":"A. Butrym","doi":"10.1109/UWBUSIS.2016.7724165","DOIUrl":"https://doi.org/10.1109/UWBUSIS.2016.7724165","url":null,"abstract":"Mode Expansion in Time Domain method is based on expansion of transient fields in a waveguide onto a basis of frequency independent coupled mode configurations with mode amplitudes being functions of longitudinal coordinate and time. In this paper the method is applied to a regular waveguide with smoothly varying transverse inhomogeneous dielectric filling (for example, slanted boundary). Approaches to constructing the bases and the corresponding waveguide evolutionary equations are discussed and compared against purely numerical solution based on full wave FDTD modeling.","PeriodicalId":423697,"journal":{"name":"2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131687329","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}
Pub Date : 2016-09-01DOI: 10.1109/UWBUSIS.2016.7724183
S. Shalamov
Purpose. A current meter based on the principle of electromagnetic induction is designed to register the current flowing in the lightning rod. The aim of the article is to describe the way of increasing the sensitivity. Methodology. The meter is used for measuring the current pulses with a rise time of 5 ns to 50 ns. If compared with other methods, meters based on the principle of electromagnetic induction have several advantages, such as simplicity of construction, reliability, low cost, no need in a power source, high sensitivity and absence of electrical contact. Also the meter responds to a narrow bandwidth and noise cannot penetrate into the electrical circuit, which is connected to the meter. Originality. Series connection of converters has the property of a long line when influenced by the pulses of the nanosecond range. The level of the transient response of the meter is calculated. The influence of parasitic parameters on the type of meter transient response is examined. The shown construction was not previously described. Practical value. The results of meter implementation are given. The design peculiarities of such measuring instruments are shown. Applying such a structure is only possible when measuring the nanosecond signals or less. Otherwise the property of a long line disappears.
{"title":"Ultra wideband current sensor","authors":"S. Shalamov","doi":"10.1109/UWBUSIS.2016.7724183","DOIUrl":"https://doi.org/10.1109/UWBUSIS.2016.7724183","url":null,"abstract":"Purpose. A current meter based on the principle of electromagnetic induction is designed to register the current flowing in the lightning rod. The aim of the article is to describe the way of increasing the sensitivity. Methodology. The meter is used for measuring the current pulses with a rise time of 5 ns to 50 ns. If compared with other methods, meters based on the principle of electromagnetic induction have several advantages, such as simplicity of construction, reliability, low cost, no need in a power source, high sensitivity and absence of electrical contact. Also the meter responds to a narrow bandwidth and noise cannot penetrate into the electrical circuit, which is connected to the meter. Originality. Series connection of converters has the property of a long line when influenced by the pulses of the nanosecond range. The level of the transient response of the meter is calculated. The influence of parasitic parameters on the type of meter transient response is examined. The shown construction was not previously described. Practical value. The results of meter implementation are given. The design peculiarities of such measuring instruments are shown. Applying such a structure is only possible when measuring the nanosecond signals or less. Otherwise the property of a long line disappears.","PeriodicalId":423697,"journal":{"name":"2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131201614","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}
Pub Date : 2016-09-01DOI: 10.1109/UWBUSIS.2016.7724178
O. Botsula, K. Prykhodko
The short length diode with forming cathode static domain and occurring impact ionization are considered. The diode peculiarity is the usage of heterojunction on cathode contact and region with varying composition. The analysis of the diodes operation was performed using Monte Carlo technique. The influence of doping profile on diode current - voltage characteristic is investigated. The carriers concentration and electric field distribution are obtained. The cathode static domain parameters depending on diode structure and voltage bias are determined. The main influence on domain parameters is caused by low concentration region size in the cathode. The role of impact ionization as electrons energy relaxation mechanism has been demonstrated.
{"title":"Static characteristics of the graded gap and heterojunction diodes containing the cathode static domain","authors":"O. Botsula, K. Prykhodko","doi":"10.1109/UWBUSIS.2016.7724178","DOIUrl":"https://doi.org/10.1109/UWBUSIS.2016.7724178","url":null,"abstract":"The short length diode with forming cathode static domain and occurring impact ionization are considered. The diode peculiarity is the usage of heterojunction on cathode contact and region with varying composition. The analysis of the diodes operation was performed using Monte Carlo technique. The influence of doping profile on diode current - voltage characteristic is investigated. The carriers concentration and electric field distribution are obtained. The cathode static domain parameters depending on diode structure and voltage bias are determined. The main influence on domain parameters is caused by low concentration region size in the cathode. The role of impact ionization as electrons energy relaxation mechanism has been demonstrated.","PeriodicalId":423697,"journal":{"name":"2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125929370","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}
Pub Date : 2016-09-01DOI: 10.1109/UWBUSIS.2016.7724185
I. Storozhenko, A. N. Yaroshenko, Y. Arkusha
The paper presents the results of numerical experiments on the oscillation generation using the n+-n-n+ transfer electron device based on InBN and GaBN graded-gap semiconductor compounds at different BN distribution. We had obtained the output characteristics of diodes in a wide range of frequencies from 30 to 700 GHz. Cutoff frequency has been estimated. At optimal BN distribution graded-gap semiconductor InBN and GaBN Gunn diodes for efficiency exceed GaN and InN diodes by more than two times. Power consumption of gradedgap InBN and GaBN diodes is 11÷19% less the power consumption of InN and GaN diodes.
{"title":"Numerical simulations of transferred-electron devices based on graded-gap semiconductor nitrides with boron nitride for terahertz range","authors":"I. Storozhenko, A. N. Yaroshenko, Y. Arkusha","doi":"10.1109/UWBUSIS.2016.7724185","DOIUrl":"https://doi.org/10.1109/UWBUSIS.2016.7724185","url":null,"abstract":"The paper presents the results of numerical experiments on the oscillation generation using the n+-n-n+ transfer electron device based on InBN and GaBN graded-gap semiconductor compounds at different BN distribution. We had obtained the output characteristics of diodes in a wide range of frequencies from 30 to 700 GHz. Cutoff frequency has been estimated. At optimal BN distribution graded-gap semiconductor InBN and GaBN Gunn diodes for efficiency exceed GaN and InN diodes by more than two times. Power consumption of gradedgap InBN and GaBN diodes is 11÷19% less the power consumption of InN and GaN diodes.","PeriodicalId":423697,"journal":{"name":"2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127479992","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}
Pub Date : 2016-09-01DOI: 10.1109/UWBUSIS.2016.7724180
V. Kozheshkurt, V. Katrich
A number of pathologies associated with improper blood flow and local metabolic disorders in human organism are accompanied by a local temperature decrease in deep layers of organism. Radiothermometry, which is based on the measurement of biological tissues electromagnetic fields, can be one of the methods of detection of such pathologies. The paper presents a model of the temperature distribution in the biological tissue in case of low temperature area. The introduced mathematical model of distribution of heat radiation in a biological environment allows determining conditions of registration of thermal anomalies in the human body. The results of the calculation of the thermal radiation power on the skin surface are presented in the work and principal possibility of determining the temperature and the depth of the temperature anomaly source using multi-frequency microwave radiometry are shown. Technical problem of realization of this method is complication of matching the receiving antenna to the biological object for the simultaneous detection of radiation at different frequencies.
{"title":"Determining the depth of the temperature anomalies in biological tissue","authors":"V. Kozheshkurt, V. Katrich","doi":"10.1109/UWBUSIS.2016.7724180","DOIUrl":"https://doi.org/10.1109/UWBUSIS.2016.7724180","url":null,"abstract":"A number of pathologies associated with improper blood flow and local metabolic disorders in human organism are accompanied by a local temperature decrease in deep layers of organism. Radiothermometry, which is based on the measurement of biological tissues electromagnetic fields, can be one of the methods of detection of such pathologies. The paper presents a model of the temperature distribution in the biological tissue in case of low temperature area. The introduced mathematical model of distribution of heat radiation in a biological environment allows determining conditions of registration of thermal anomalies in the human body. The results of the calculation of the thermal radiation power on the skin surface are presented in the work and principal possibility of determining the temperature and the depth of the temperature anomaly source using multi-frequency microwave radiometry are shown. Technical problem of realization of this method is complication of matching the receiving antenna to the biological object for the simultaneous detection of radiation at different frequencies.","PeriodicalId":423697,"journal":{"name":"2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130570180","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}
Pub Date : 2016-09-01DOI: 10.1109/UWBUSIS.2016.7724161
M. Kaliberda, S. Pogarsky
Diffraction of the E- polarized wave by the infinite periodic grating without one strip in the assumption of small strips width as compared to the period is considered in this paper. The current on the strips is represented as a sum of the currents of the infinite periodic grating and the correction current. The scattered field is found in the form of the simple-layer potential with unknown coefficients. These coefficients correspond to the average current density on the strips. For their determination the integral equations are obtained. The dependencies of the correction field vs. coordinates are represented.
{"title":"Infinite periodic grating with one strip removed in the case of small strips width relative to the period","authors":"M. Kaliberda, S. Pogarsky","doi":"10.1109/UWBUSIS.2016.7724161","DOIUrl":"https://doi.org/10.1109/UWBUSIS.2016.7724161","url":null,"abstract":"Diffraction of the E- polarized wave by the infinite periodic grating without one strip in the assumption of small strips width as compared to the period is considered in this paper. The current on the strips is represented as a sum of the currents of the infinite periodic grating and the correction current. The scattered field is found in the form of the simple-layer potential with unknown coefficients. These coefficients correspond to the average current density on the strips. For their determination the integral equations are obtained. The dependencies of the correction field vs. coordinates are represented.","PeriodicalId":423697,"journal":{"name":"2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124900569","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}
Pub Date : 2016-09-01DOI: 10.1109/UWBUSIS.2016.7724143
M. Andreev, O. Drobakhin
Specifics of use of the Prony's method to determine the natural frequencies from the frequency response of the object in comparison with direct fractional-rational approximation has been examined.
与直接分数有理近似相比，使用普罗尼方法从对象的频率响应确定固有频率的具体情况已经进行了检查。
{"title":"Feature of Prony's method application for natural frequencies estimation from the frequency response","authors":"M. Andreev, O. Drobakhin","doi":"10.1109/UWBUSIS.2016.7724143","DOIUrl":"https://doi.org/10.1109/UWBUSIS.2016.7724143","url":null,"abstract":"Specifics of use of the Prony's method to determine the natural frequencies from the frequency response of the object in comparison with direct fractional-rational approximation has been examined.","PeriodicalId":423697,"journal":{"name":"2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126985487","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}
Pub Date : 2016-09-01DOI: 10.1109/UWBUSIS.2016.7724166
L. Maxim
In paper Body of Revolution Finite Difference in Time Domain (BOR FDTD) method is used for calculation of the diffraction of modes of a hollow dielectric waveguide on axially symmetric grating with many periods. The effective absorbing boundary conditions for this method in form of Perfectly Matched Layer (PML) are presented. Reflection and transmission coefficients and field distributions for different modes are obtained.
{"title":"BOR-FDTD for axially symmetrical diffraction grating calculation","authors":"L. Maxim","doi":"10.1109/UWBUSIS.2016.7724166","DOIUrl":"https://doi.org/10.1109/UWBUSIS.2016.7724166","url":null,"abstract":"In paper Body of Revolution Finite Difference in Time Domain (BOR FDTD) method is used for calculation of the diffraction of modes of a hollow dielectric waveguide on axially symmetric grating with many periods. The effective absorbing boundary conditions for this method in form of Perfectly Matched Layer (PML) are presented. Reflection and transmission coefficients and field distributions for different modes are obtained.","PeriodicalId":423697,"journal":{"name":"2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133555425","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}
Pub Date : 2016-09-01DOI: 10.1109/UWBUSIS.2016.7724192
N. Yeliseyeva, S. Berdnik, V. Katrich, M. Nesterenko
For a resonant impedance wire dipole that is inclined at the angle over a square perfectly conducting screen the conditions guaranteeing formation of a circularly polarized wave with extremely achievable field amplitude in the set directions of the main observation planes depending on the screen sizes are investigated. The asymptotic solution of the 3D diffraction problem of the field of an arbitrarily oriented impedance wire dipole on the rectangular screen, obtained by the uniform geometric diffraction theory method was used. The detailed analysis of the dipole's slope angles, the dipole's removal from the screen, at which a circular polarized wave is formed with extremely achievable field amplitude depending on the screen sizes are given. It is shown that with increasing the screen sizes the interval of angles in the main observation planes at which can be formed the circular polarization considerably increases.
{"title":"Polarization of wave formed by impedance wire dipole with screen depending on screen sizes","authors":"N. Yeliseyeva, S. Berdnik, V. Katrich, M. Nesterenko","doi":"10.1109/UWBUSIS.2016.7724192","DOIUrl":"https://doi.org/10.1109/UWBUSIS.2016.7724192","url":null,"abstract":"For a resonant impedance wire dipole that is inclined at the angle over a square perfectly conducting screen the conditions guaranteeing formation of a circularly polarized wave with extremely achievable field amplitude in the set directions of the main observation planes depending on the screen sizes are investigated. The asymptotic solution of the 3D diffraction problem of the field of an arbitrarily oriented impedance wire dipole on the rectangular screen, obtained by the uniform geometric diffraction theory method was used. The detailed analysis of the dipole's slope angles, the dipole's removal from the screen, at which a circular polarized wave is formed with extremely achievable field amplitude depending on the screen sizes are given. It is shown that with increasing the screen sizes the interval of angles in the main observation planes at which can be formed the circular polarization considerably increases.","PeriodicalId":423697,"journal":{"name":"2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS)","volume":"577 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120970969","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}
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