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2020 Baltic URSI Symposium (URSI)最新文献

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Wideband Characterization of Soil Complex Dielectric Permittivity Spectrum 土壤复介电常数谱的宽带表征
2020 Baltic URSI Symposium (URSI) Pub Date : 2020-10-05 DOI: 10.23919/URSI48707.2020.9254068
A. Szypłowska, Hironobu Saito, S. Yagihara, M. Fukuzaki, K. Furuhata, J. Szerement, M. Kafarski, A. Lewandowski, A. Wilczek, W. Skierucha
{"title":"Wideband Characterization of Soil Complex Dielectric Permittivity Spectrum","authors":"A. Szypłowska, Hironobu Saito, S. Yagihara, M. Fukuzaki, K. Furuhata, J. Szerement, M. Kafarski, A. Lewandowski, A. Wilczek, W. Skierucha","doi":"10.23919/URSI48707.2020.9254068","DOIUrl":"https://doi.org/10.23919/URSI48707.2020.9254068","url":null,"abstract":"We present a wideband characterization of soil complex dielectric permittivity spectra in the frequency range from 40 Hz to 500 MHz. Soil samples of various moisture content were measured with the use of a seven-rod probe, which was connected to an impedance analyzer and a vector-network-analyzer through a switch controlled by a PC. The use of a single probe in connection with both analyzers ensured that the same samples were examined in the whole frequency range, without the density changes nor significant moisture variations between the consecutive measurements by the analyzers. The spectra obtained from both instruments were merged and analyzed with the use of a combined permittivity and conductivity model.","PeriodicalId":185201,"journal":{"name":"2020 Baltic URSI Symposium (URSI)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131513201","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
Poynting's Vector Modelling for Cyclostationary Electromagnetic Emissions from PCB PCB环平稳电磁辐射的矢量建模
2020 Baltic URSI Symposium (URSI) Pub Date : 2020-10-05 DOI: 10.23919/URSI48707.2020.9254044
Y. Kuznetsov, A. Baev, M. Konovalyuk, A. Gorbunova, J. Russer
{"title":"Poynting's Vector Modelling for Cyclostationary Electromagnetic Emissions from PCB","authors":"Y. Kuznetsov, A. Baev, M. Konovalyuk, A. Gorbunova, J. Russer","doi":"10.23919/URSI48707.2020.9254044","DOIUrl":"https://doi.org/10.23919/URSI48707.2020.9254044","url":null,"abstract":"Estimation of statistical characteristics for radiated electromagnetic emissions caused by a PCB can be implemented by statistical signal processing of time domain signals measured by a near-field scanning system. The relation between the source signal and the signals measured by the nearfield probe at each scanning point can be modelled by linear transformation of the source signal. In this paper a modeling procedure for a near-field to far-field propagator based on Jefimenko's equations is presented. The radial component of instantaneous power density represented by Poyting's vector was derived from the modelled electric and magnetic far fields components. The synchronized impulse responses can be used for computer aided prediction of the spatial-time evolution of the cyclostationary characteristics in the environment surrounding the PCB. The 2D periodic ACF of the far-field shows the cyclostationary properties similar to the properties of the initial random bit sequence.","PeriodicalId":185201,"journal":{"name":"2020 Baltic URSI Symposium (URSI)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127148963","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
Electromagnetic Modeling of Microstrip Elements Aided with Artificial Neural Network 基于人工神经网络的微带元件电磁建模
2020 Baltic URSI Symposium (URSI) Pub Date : 2020-10-05 DOI: 10.23919/URSI48707.2020.9254029
L. Sorokosz, W. Zieniutycz
{"title":"Electromagnetic Modeling of Microstrip Elements Aided with Artificial Neural Network","authors":"L. Sorokosz, W. Zieniutycz","doi":"10.23919/URSI48707.2020.9254029","DOIUrl":"https://doi.org/10.23919/URSI48707.2020.9254029","url":null,"abstract":"The electromagnetic modeling principle aided with artificial neural network to designing the microwave wideband elements/networks prepared in microstrip technology is proposed in the paper. It is assumed that the complete information is known for the prototype design which is prepared on certain substrate with certain thickness and electric permittivity. The longitudinal and transversal dimensions of new design are calculated separately using the scale coefficients which are determined from transmission line equation. Next the artificial neural network can be used for final tuning which should take into account the dispersion of microstrip line. The verification of proposed procedure is shown for exemplary planar UWB balun.","PeriodicalId":185201,"journal":{"name":"2020 Baltic URSI Symposium (URSI)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126429705","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: 2
Transmission Profile Selection in Dense Wireless Networks 密集无线网络中的传输配置文件选择
2020 Baltic URSI Symposium (URSI) Pub Date : 2020-10-05 DOI: 10.23919/URSI48707.2020.9254040
Ł. Kułacz, Adrian Kliks, Bartosz Bossy, P. Kryszkiewicz
{"title":"Transmission Profile Selection in Dense Wireless Networks","authors":"Ł. Kułacz, Adrian Kliks, Bartosz Bossy, P. Kryszkiewicz","doi":"10.23919/URSI48707.2020.9254040","DOIUrl":"https://doi.org/10.23919/URSI48707.2020.9254040","url":null,"abstract":"One of the recent approaches for improving capacity of future wireless network is to increase the density of nodes by deployment of short-range base stations called small cells. When the number of such nodes is high, one may think of socalled ultra or extreme dense networks. In such a case, the efficient management of consumed energy is crucial. In this paper, we discuss the concept of transmit profile selection applied in dense wireless networks. Each profile is defined by the tuple of certain parameters which specify the transmit characteristics of each node, and in consequence allows for assessing total power consumption. Two power profiles have been defined, where one considers transmission using advanced channel coding algorithms and the other utilizes simple modulation schemes with no channel coding. Computer simulation has been performed to compare the performance of the network operating in one of these modes.","PeriodicalId":185201,"journal":{"name":"2020 Baltic URSI Symposium (URSI)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114395176","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: 1
Integrated Correlator with Rat-Race Hybrids for the Wi-Fi Band Quadrature Microwave Frequency Discriminator 用于Wi-Fi波段正交微波鉴频器的鼠种混合集成相关器
2020 Baltic URSI Symposium (URSI) Pub Date : 2020-10-05 DOI: 10.23919/URSI48707.2020.9254069
A. Rutkowski, Hubert Stadnik
{"title":"Integrated Correlator with Rat-Race Hybrids for the Wi-Fi Band Quadrature Microwave Frequency Discriminator","authors":"A. Rutkowski, Hubert Stadnik","doi":"10.23919/URSI48707.2020.9254069","DOIUrl":"https://doi.org/10.23919/URSI48707.2020.9254069","url":null,"abstract":"The instantaneous frequency measurement (IFM) devices are very useful for very fast measurement of current frequency value of microwave signals even if their duration is extremely short. A fast measurement of temporary value of frequency is based on evaluation of a phase difference of signals propagating through the microwave transmission lines having unequal but known lengths. The paper presents integrated version of microwave correlator containing socalled proportional phase shift forming network (PPhSFN) and six-port on a single printed circuit board (PCB). The developed device was designed to work over Wi-Fi frequency range.","PeriodicalId":185201,"journal":{"name":"2020 Baltic URSI Symposium (URSI)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123607773","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: 1
A resonant Class E power amplifier for low resistance load 用于低阻负载的E类谐振功率放大器
2020 Baltic URSI Symposium (URSI) Pub Date : 2020-10-05 DOI: 10.23919/URSI48707.2020.9254036
M. Mikolajewski, W. Kazubski
{"title":"A resonant Class E power amplifier for low resistance load","authors":"M. Mikolajewski, W. Kazubski","doi":"10.23919/URSI48707.2020.9254036","DOIUrl":"https://doi.org/10.23919/URSI48707.2020.9254036","url":null,"abstract":"In some applications such as radio transmitters with loop antennas, h.f. drivers for RFID transmitting coils, wireless h.f. power supplies for biomedical implants and endoscope capsules etc. resonant power amplifiers operate with high-reactance and low-resistance load. The paper analyses an off-nominal Class E ZVS amplifier to identify conditions for its high-efficiency operation with low-resistance load. Power loss of the transistor switch in Class E amplifiers with normalized transistor turn-on time D= 0.5 operating in nominal and off-nominal conditions are compared. Analytical closed-form estimations for power losses in the transistor switch in the off-nominal amplifier are given. Theoretical results experimentally validated have demonstrated that by designing the off-nominal Class E amplifier for a high enough dc supply voltage the power losses in the transistor switch can be significantly reduced. This makes the circuit useful in those applications that require the amplifier to operate with high output current and/or low-resistance load. A laboratory model of the off-nominal amplifier was designed and built to operate at the frequency 140 kHz with output power 50 W, dc supply voltage 24 V, load resistance 2 n and D= 0.5. Its measured efficiency was 96 %.","PeriodicalId":185201,"journal":{"name":"2020 Baltic URSI Symposium (URSI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132759419","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: 1
Hybrid Technique for the EM Scattering Analysis with the Use of Ring Domain Decomposition 基于环域分解的电磁散射混合分析技术
2020 Baltic URSI Symposium (URSI) Pub Date : 2020-10-05 DOI: 10.23919/URSI48707.2020.9254017
M. Baranowski, Sebastian Dziedziewicz, R. Lech, P. Kowalczyk
{"title":"Hybrid Technique for the EM Scattering Analysis with the Use of Ring Domain Decomposition","authors":"M. Baranowski, Sebastian Dziedziewicz, R. Lech, P. Kowalczyk","doi":"10.23919/URSI48707.2020.9254017","DOIUrl":"https://doi.org/10.23919/URSI48707.2020.9254017","url":null,"abstract":"A hybrid technique combining finite-element and mode-matching methods for the analysis of scattering problems in open space is presented here. The main idea is based on impedance matrix descriptions of the boundary surrounding the discrete computational domain and combine it with external field described analytically. The discrete analysis, which is the most time- and memory-consuming, is limited here only to the close proximity of the posts or fragments of post which geometry is complex. All the obtained results have been verified by comparison with simulations performed using alternative methods or commercial software.","PeriodicalId":185201,"journal":{"name":"2020 Baltic URSI Symposium (URSI)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128885373","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
Influence of salt mist on microwave propagation 盐雾对微波传播的影响
2020 Baltic URSI Symposium (URSI) Pub Date : 2020-10-05 DOI: 10.23919/URSI48707.2020.9254030
Bing Zhang, Wenyi Zhang, Zhuo Chen, Fuyu Luo, Haibin Zhou
{"title":"Influence of salt mist on microwave propagation","authors":"Bing Zhang, Wenyi Zhang, Zhuo Chen, Fuyu Luo, Haibin Zhou","doi":"10.23919/URSI48707.2020.9254030","DOIUrl":"https://doi.org/10.23919/URSI48707.2020.9254030","url":null,"abstract":"Microwave propagation through atmosphere is affected by air temperature, humidity, attitude, and other factors. There are many related researches on the above influencing factors, but relatively few researches are attached on the microwave propagation characteristics under the condition of sea salt mist. It is of great significance to clarify the law of microwave propagation attenuation under the condition of salt mist for the microwave applications such as maritime communication and radar detection. In this paper, the parameters of the salt mist environment were analyzed and modeled firstly, and the relationship between salt mist concentration and dielectric constant was given. Then, based on the finite-difference time-domain (FDTD) numerical analysis, the microwave propagation law through salt mist under different concentration was calculated and analyzed. The attenuation law was given finally.","PeriodicalId":185201,"journal":{"name":"2020 Baltic URSI Symposium (URSI)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117183845","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
Wireless IoT communication module with low power consumption for a soil moisture and salinity sensor 低功耗的无线物联网通信模块，用于土壤湿度和盐度传感器
2020 Baltic URSI Symposium (URSI) Pub Date : 2020-10-05 DOI: 10.23919/URSI48707.2020.9253753
Adrian Łostowski, A. Wilczek, M. Kafarski, A. Lewandowski, A. Szypłowska, W. Skierucha, Michał Abramowicz
{"title":"Wireless IoT communication module with low power consumption for a soil moisture and salinity sensor","authors":"Adrian Łostowski, A. Wilczek, M. Kafarski, A. Lewandowski, A. Szypłowska, W. Skierucha, Michał Abramowicz","doi":"10.23919/URSI48707.2020.9253753","DOIUrl":"https://doi.org/10.23919/URSI48707.2020.9253753","url":null,"abstract":"The purpose of this work was to create a wireless Internet-of-Things (IoT) communication module for a device for measuring soil parameters in a field environment. The module uses the Low Power Wide Area Network (LPWAN) technology to exchange data with an external database. This paper contains information about design assumptions, research on the existing long-range communication technology solutions and description of the design process.","PeriodicalId":185201,"journal":{"name":"2020 Baltic URSI Symposium (URSI)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117264431","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: 1
The Use of MEMS Accelerometers for Remote Activity and Living Parameters Monitoring MEMS加速度计在远程活动和生活参数监测中的应用
2020 Baltic URSI Symposium (URSI) Pub Date : 2020-10-05 DOI: 10.23919/URSI48707.2020.9254025
Natalia Osiadala, Marcin Kołakowski
{"title":"The Use of MEMS Accelerometers for Remote Activity and Living Parameters Monitoring","authors":"Natalia Osiadala, Marcin Kołakowski","doi":"10.23919/URSI48707.2020.9254025","DOIUrl":"https://doi.org/10.23919/URSI48707.2020.9254025","url":null,"abstract":"In the paper a ballistocardiographic sensor for remote monitoring of activity and vital parameters is presented. The sensor is mainly intended for use in monitoring systems supporting care of older people. It allows to detect occupancy of a piece of furniture, to which it is attached and to estimate basic vital parameters (heart and respiration rates) of the monitored person. The presented device includes three inertial sensors: two accelerometers of different parameters and prices and one reference BCG module. The device sends the measurement results to the external server over WiFi. The vital parameters are estimated based on the Continuous Wavelet Transform of the registered acceleration signals. User's presence is detected by tracking changes in acceleration measured in axes parallel to the ground.","PeriodicalId":185201,"journal":{"name":"2020 Baltic URSI Symposium (URSI)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122530739","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
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