2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)最新文献_第3页

Fiber-Optic Fabry-Perot Interferometric Sensor for Pulse Wave Registration 用于脉冲波配准的光纤法布里-珀罗干涉传感器

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2019-10-01 DOI: 10.1109/EExPolytech.2019.8906879

A. Markvart, L. Liokumovich, N. Ushakov

引用次数: 2

Thermoelectric Properties of Bismuth Telluride and Antimony Telluride Synthesized by Electrochemical Deposition Method 电化学沉积法制备碲化铋和碲化锑的热电性能

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2019-10-01 DOI: 10.1109/EExPolytech.2019.8906804

R. Buslaev, R. Golubev, E. Bakulin, S. Dzyubanenko

引用次数: 0

Conductivity Switching Effect in Nanofiber Composites Modified with Conducting Polymer 导电聚合物改性纳米纤维复合材料的电导率开关效应

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2019-10-01 DOI: 10.1109/EExPolytech.2019.8906888

A. Tretiakov, V. Kapralova, N. Sudar, I. Sapurina, B. Glasmacher, O. Gryshkov

引用次数: 0

Determination of Noise Components in Laser Correlation Spectroscopic Devices for Signal-to-Noise Ratio Estimation 信噪比估计用激光相关光谱装置中噪声成分的测定

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2019-10-01 DOI: 10.1109/EExPolytech.2019.8906887

E. Nepomnyashchaya, E. Velichko, O. Kotov

引用次数: 8

The Analytical Model for Calculating Distortions in the Envelope Tracking Power Supply 包络跟踪电源畸变计算的解析模型

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2019-10-01 DOI: 10.1109/EExPolytech.2019.8906813

Aleksey O. Pergushev

{"title":"The Analytical Model for Calculating Distortions in the Envelope Tracking Power Supply","authors":"Aleksey O. Pergushev","doi":"10.1109/EExPolytech.2019.8906813","DOIUrl":"https://doi.org/10.1109/EExPolytech.2019.8906813","url":null,"abstract":"Amplification of signals with a high peak-to-average power ratio is accompanied by decreasing of the radio transmitter's efficiency, which can be increased with the help of the envelope tracking method. A multi-cell switched-mode power amplifier can be used as an envelope tracking power supply, which, on the one hand, allows us to expand the bandwidth and decrease requirements for output filter, on the other hand, it is characterized by non-linear distortions, due to the features of the switched-mode operating. Their levels can be estimated using simulation. However, the simulation time spent can be tens of minutes or even several hours, especially when trying to take into account the statistical dispersion of some parameters of the envelope tracking power supply. This is due to using complex non-linear models of the transistors, the number of which in the envelope tracking power supply can reach several dozens. Time spent can be reduced by using an approximate analytical model. However, its disadvantage is the low accuracy associated with assumptions about the non-inertial transistors and, as a rule, about the lack of the simulated device’s parameters dispersion. The paper presents an analytical model of a multi-cell envelope tracking power supply, which takes into account the digital conversion of its input voltage and reference voltage, the inertial properties of real transistor, the on-state transistor voltage and the dispersion of the output filter inductances. In addition, this model implements a statistical analysis of the transistors parameters dispersion. This allows us to provide a difference with the results of an experiment less than 10% with a time spent as much as 3…6 times less than using simulation. Such accuracy, combined with low time spent, allows using the represented analytical model in engineering calculations of the envelope tracking power supply.","PeriodicalId":305685,"journal":{"name":"2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121147344","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: 7

Criteria for Selection Envelope Tracking Power Supply Parameters for High Peak-to-Average Power Ratio Applications 高峰值-平均功率比应用的包络跟踪电源参数选择标准

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2019-10-01 DOI: 10.1109/EExPolytech.2019.8906793

Aleksey O. Pergushev, V. Sorotsky, A. Ulanov

{"title":"Criteria for Selection Envelope Tracking Power Supply Parameters for High Peak-to-Average Power Ratio Applications","authors":"Aleksey O. Pergushev, V. Sorotsky, A. Ulanov","doi":"10.1109/EExPolytech.2019.8906793","DOIUrl":"https://doi.org/10.1109/EExPolytech.2019.8906793","url":null,"abstract":"The signals used in telecommunication systems have a high peak-to-average power ratio. To increase the efficiency of power amplifiers of such signals, an envelope tracking method can be applied. In this case, an envelope tracking power supply (ETPS) can be implemented on the basis of a multi-cell switched-mode power amplifier. This allows not only to partially compensate non-linear distortions associated with the use of the switch mode, but also to expand the ETPS bandwidth by increasing the number of cells. It is noted that in the case when output power of a single cell is limited, the possibility of increasing the output power can be regarded as an important advantage of a multi-cell power amplifier. It is emphasized that the increase in number of cells leads to the raise of the mass and dimensions of ETPS. The main factors that limit the multi-cell ETPS bandwidth are noted in the paper. These include errors in synchronization of cells control signals and dispersion in the implementation of the LPF inductances. The influence of these factors leads to significant increase in side spectra at frequencies that are multiples of the sampling frequency. Recommendations on choosing the rational number of cells, that will allow us to show up all the multi-cell ETPS’s advantages, are given.","PeriodicalId":305685,"journal":{"name":"2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124105273","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: 10

Perspectives for Appliance and Accuracy Improvement of Coordinate Measurements with Laser Technique 激光坐标测量技术的应用前景及精度的提高

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2019-10-01 DOI: 10.1109/EExPolytech.2019.8906848

Petr Chelishchev, K. Sørby, V. Privalov

引用次数: 0

Clarification of the Phase Diagram of PbHfO3 in Pressure-temperature Space 压力-温度空间中phbhfo3相图的澄清

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2019-10-01 DOI: 10.1109/EExPolytech.2019.8906809

M. Kniazeva, K. Roleder, A. Majchrowski, Yurii Bronvald, D. Andronikova, G. Lityagin, A. Ganzha, A. Filimonov, R. Burkovsky, Gaston Garbariano, P. Parisiades

引用次数: 0

Scaling QAM Technique for LED-based Visible Light Communication System with Signal-related Noise 含信号相关噪声的led可见光通信系统的缩放QAM技术

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2019-10-01 DOI: 10.1109/EExPolytech.2019.8906805

Di Zheng, Hongming Zhang, Changyong Pan, Jian Song

引用次数: 1

EExPolytech 2019 Section 3

2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2019-10-01 DOI: 10.1109/eexpolytech.2019.8906845

引用次数: 0