2018 Moscow Workshop on Electronic and Networking Technologies (MWENT). Proceedings
MWENT-2018, the first Moscow Workshop on Electronic and Networking Technologies that is just started but is supposed to be a premium international conference fully sponsored by the IEEE Russia Central Section and Electron Devices Society of the IEEE. The uniqueness of MWENT among first-class international conferences is that it is held in rapidlygrowing place providing opportunities for exchanging information and ideas in electronic and networking field. The MWENT Workshop Technical Program Committee has established the level of the event to connect scientists with professionals, encourage students and young professionals to do research and support the transfer of research results into industry and supporting activities. They want to keep an appropriate environment for development of national Electron industry and society in general. The papers, sessions and keynote presentations have been selected to highlight both the longestablished fields in electronic and networking technologies and the newer areas as optoelectronics where micro- and nanoelectronics will contribute substantially to the well-being of mankind.
Because the conference is limited to three days, it was necessary to reject almost twice as many papers contributed. The final selection was made by the program committee team at online meetings, who worked diligently to evaluate over 350 papers. Proceedings contains the full-length papers of all invited and regular papers followed by all the MWENT contributed papers grouped by Sessions. The selected papers are organized in four parallel tracks of Sessions made of 5 to 7 papers grouped around topics of MWENT namely: wireless communication circuits and systems, control systems, RF circuits, networks, data converters, sensors, and micro- and nanosystems.
The paper presents the analysis of the signal integrity in microstrip transmission line with nanoconducting dielectric. It shows the results of calculating the passage of a sequence of pulses of trapezoidal shape to account for losses in copper. It is due to its finite conductivity and skin effect, which significantly affects the high frequency harmonics, and also to the loss in nanoconducting dielectric with a high end-to-end conductivity. It is shown that all these losses are small and the use of nanoconducting dielectrics for eliminating electrostatic discharge is justified.
A unified SPICE macromodel of the SiGe HBTs taking into account radiation effects is presented. It consists of two parts: 1) the standard core model (GP, VBIC, HICUM, MEXTRAM) selected by the designer; 2) an additional subcircuit taking into account the radiation-induced current and voltage shifts. The macromodel was included on SPICE-like simulators. The advantages of SPICE-RAD version of HBT model are: 1) high accuracy of description for device characteristics; 2) convenience to use for IC designers; 3) simplicity of parameter determination. The I-V characteristics of SiGe HBTs irradiated by gamma-rays, protons, neutrons, electrons are measured and simulated. The error for static characteristics is 10-15% and for dynamic characteristics is 15–20% in wide range of doses and/or fluencies.
In case of the modern sizes of chips influence of interconnections is so significant that need interconnections compact electrical model of creation appeared. This model has to consider effects of corners that circuit developers could imitate most precisely practical circuits at their design. The purpose of this paper is to develop compact SPICE models for standard configurations of LSI interconnections. For achievement of this goal the interconnection model in the form of the distributed RC circuit is used. Proceeding from potential distribution along the interconnection, his model parameters – resistance and the capacity of RC circuit links are calculated that allows to consider influence of bends on interconnection electric properties. For simplification of interconnection model and reduction of a counting duration the multi-sectional RC model is reduced in the compact Pi-shaped equivalent circuit. For each of the main topology the parameters for Pi-shaped equivalent circuits, which give accuracy in the frequency parameters of 98% on a phase and 93% on amplitude, are calculated. Upon transition to the Pishaped equivalent circuit the CPU time is reduced by 28%.
This paper presents a description of the method of automated parametric and structural optimization of systems for ensuring thermal regime of microelectronic devices using modern information technologies.
Author proposes a new theory of virtual modeling of physical processes, which allows to obtain data enabling the designer of an onboard electronic means to build and see on the computer monitor a 3D image of the developed design. At the same time, physical fields obtained from virtual modeling of thermal and mechanical processes are superimposed on the design image. These fields enable you to define in which places of the actual design overheating, unacceptable deformations and accelerations on electronic components are possible.
The results are displayed in the form of: thermal fields of printed circuit boards and other load-bearing structures, acceleration field on electronic components, and fields of mechanical stresses and deformations of load-bearing structures of onboard electronic means.
In the work the author formulated requirements to the theory of virtual modeling of dissimilar physical processes in schemes and constructions, and developed the content of this theory.
The author shows that the basis of the developed theory is modeling of dissimilar physical processes with the use of mathematical analogies and topological graphs.
The present work describes the step-by-step development of an automated control and measuring system that monitors the electrical and thermal parameters of pulsed secondary power supplies (SPS) for laptops. The main guidance documents are considered, according to which the design of impulse SPS laptops is carried out. It is revealed that the existing methods for controlling the parameters of pulsed SPS laptops take into account only electrical, however, the thermal parameters make a significant contribution to the result of numerical values of electrical parameters. In this regard, an improved method for controlling both electrical and thermal parameters of pulsed secondary power supplies is proposed. The structure of the automated control and measuring system as a whole, as well as the structure of the multifunctional hardware platform with all its components are developed.
The paper presents the results of research that can be put into the development and research of non-contact rapid method for assessing the quality of the assembly and installation of EM designs. To achieve the objectives, studied the behavior of the mechanical connection of the contact pairs, namely the definition of the contribution of R, L, C parameters contact joints in the modulation level and the spectral composition of the electromagnetic radiation mechanical contact pair. The method is based on the registration and analysis of artificially excited by contact noise when exposed to mechanical vibrations and harmonic electric high frequency signal on structural elements EM. Considered in the field of electromagnetic compatibility (EMC) as an undesirable phenomenon, the formation of contact interference can be used to evaluate the mechanical properties of a wide variety of designs and hardware devices, including the quality of assembly and installation (especially related to the effort of tightening fasteners).
The article represents outcomes of development of the detection method of a source of contact noises in car structures which occur at wireless communication in motion. The detection method is based on defining the spatial orientation of radiating circuit, as well as on measuring its resonance frequency. Orientation of components of electromagnetic field of transmitter and receiver electric antennas, as well as orientation of components of radiating circuit field have been studied to achieve the purpose. The condition of having the maximal level of contact noises to be radiated by the circuit which is essential for its reliable detection was defined. In order to define equivalent size of radiating circuit a dependence of its resonance frequency as an electric oscillating system from circuit size, material of which components which form radiating circuit are made, from wireless signal carrier frequency has been established. During research the skin effect of current density distribution over the thickness of conducting elements of radiating circuit has been taken into account. The method requires no application of sophisticated apparatus and may be applied in the field. Radio stations installed in vehicles may be used as technical means of radiating circuit detection.
Through the analysis of JFET models with account for temperature effects, the most suitable one was selected as a basis for expanding SPICE modeling possibilities to cryogenic-to-high temperature range. Parameter extraction procedure was automated and improved using IC-CAP scripting capabilities.
We consider the technology of information processing and the use of neural networks to identify complex gas-air mixtures with a multi-sensor system of the “electronic nose” type equipped with semiconductor gas sensitive sensors. We also present the results of our experimental studies of the recognition of various gas mixtures based on the application of neural networks in the process of processing signals from a multi-sensor system of gas-sensitive sensors.
Efficiency of the use of geoinformation systems in industry is formed in many respects: in updating and replenishment of the topographic base for the territorial objects of enterprises; Monitoring compliance with the boundaries of allotments and nature protection zones; quality environmental monitoring; complex mapping of geological formations in the system of mineral exploration; in the planning of capital construction and the creation of infrastructure communications. Digital technologies can significantly reduce the production time and reduce its costs, and digital modeling of processes significantly reduces the number of field tests and experiments. The development of new methods of technical and economic audit predetermines the need to create and justify the most common and objective criteria and evaluation indicators at the design stage of satellite equipment. In order to increase the service life of space vehicles, it is proposed to calculate the possible consequences of electrostatic discharges at the design design stage and provide recommendations for reducing their negative impact. In the studies, a new method for calculating interference from electrostatic discharges in the on-board cable network of spacecrafts is considered. The method makes it possible to reduce the complexity of calculating the spreading of currents along the surface of spacecraft by 2-3 orders of magnitude. The method is based on the idea of building macromodels built on the basis of explicit and implicit methods of Euler. The error in the application of the method is 1%, which is quite acceptable at the stage of preliminary design.
Digital control systems are considered, the functioning of which can be represented as a sequence of functions of a finite alphabet. For such systems design debugging by simulation it is necessary to generate the minimal complete, in the sense of a particular criteria, set of tests for applying to the simulated system to verify the correctness of functioning. Digital control systems are simulated on the logic level of the signals they exchange with external environment, including controlled object. As input data for the simulation input interactions are used, comprising both the actual input signals and output exchange control signals. We consider control digital systems the functioning of which can be represented in the form of a sequence of functions from a finite alphabet. For the development of projects of such systems by the modeling method, it is necessary to form a minimum complete, in the sense of a certain criterion, set of test actions for the simulated system to verify the correctness of its functioning. Control digital systems are modeled at the level of the logical signals that they exchange with the external environment, including those with managed objects. Inputs for simulation are input interactions which include both the actual input signals and the output control signals of the exchange. Algorithm of the minimal complete test set generation for design debugging is proposed, the algorithm is based on developer-defined classes of equivalence of input interactions.
In operation results of computer simulation of characteristics of the standard analog device - the heterodyne executed on the printed circuit board from the composite dielectric having feeble conductivity are explained. Results of simulation showed that increase in specific bulk conductivity of material of the printed circuit board to 2·10 -7 Ohm -1 -m -1 practically does not change operating characteristics of a heterodyne. The possibility of effective use of the composite poorly carrying out dielectrics in standard radio engineering devices allowing to prevent origin of electrostatic discharges is set.
Welcome to MWENT-2018, the first Moscow Workshop on Electronic and Networking Technologies that is just started but is supposed to be a premium international conference fully sponsored by the IEEE Russia Central Section and Electron Devices Society of the IEEE. The uniqueness of MWENT among first-class international conferences is that it is held in rapidlygrowing place providing opportunities for exchanging information and ideas in electronic and networking field.
Statistical modeling methods, in particular, the factor and multiple regression analysis are offered to use for the variable attenuator design. It is shown that the statistical methods which are earlier not used for decision of the given problem, allow to reveal physical laws of elements operation in device. It promotes creation of structure with minimum phase shift at regulation of transfer factor or insertion loss. At the controlled attenuator design it is necessary to reveal the factor loadings separately influencing to phase variation and insertion loss. Revealing and interpretation of the factor loadings influencing to investigated characteristics, allows to change the traditional methodology and essential simplify optimization of the phase compensating and adjusting parameters of attenuator. The software system Statistica is used for modeling.
The article describes a model of a parallel matrix switching system based on colored Petri Nets (CPN). The CPN-based model developed by us describes the parallel switching algorithm. The CPN-based model is a hierarchical network containing inhibitory arcs. Due to the use of timed CPN, we obtained the dependence of the average queue length on the intensity of the flow.
Logging-while-drilling (LWD) telemetry systems have been designed relying on cable-based equipment or advanced signal processing techniques applied to the electromagnetic channel through ground. The main disadvantage of such systems consist in the fact that measurements can be actually carried out only when the drilling operation is stopped. In this paper, a dedicated X-band equipment for LWD telemetry along pipes regarded as dielectric waveguides is proposed. A hybrid-integrated power amplifier-transmitter for this purpose is described. This system represents a modern solution to geophysical applications where transitions from vertical to horizontal drilling are required. Drilling pipes provide a new communication channel for telemetry although the potential issues related to large attenuation in the soil and external disturbances are to be carefully assessed beforehand. In particular, great attention has to be put in such a way as to achieve an efficient excitation and reduced distortion of the radio signal propagating along the pipe. In the paper we put in details the simulated performances, transmitter design, and current-efficiently issues. The output power is up to 10–25 Wt in short-pulse mode, at central lobe of 9–10 GHz. This level of power is sufficient for the short boreholes. The proposed amplifier-transmitter is used to establish a new communication channel. It is link between surface and the drilling point. Some review explaining the great degree of interest in this topic is presented. Experimental measurement results are provided as well.
This paper discusses data interchange formats in the context of heterogeneous networks for the Internet of Things (IoT). The wide dissemination of IoT technologies into various industries, such as agriculture and mining, reveals data transfer issues in geographically remote locations due to absence of any network infrastructure. Several technologies like LoraWAN and NB-IOT offer extended communication ranges, however they still cannot fully solve the problem. In many cases satellite networks are the only available option for transmitting IoT data to a central collection point. Our research of satellite networks showed that as of today the Iridium Short Burst Data (SBD) network is one of the best technologies suited for IoT applications. However, the SBD imposes a significant limit on the size of transmitted messages, which turns data format selection into a vitally important task. We developed a simulation model as well as a heterogeneous Iridium-LoRAWAN prototype to compare different data exchange formats. Our experiments showed more than 4 times increase in the amount of data transferred with Protocol Buffers, compared to the widely used JSON format.
This paper reviews modern ways of data preparation, acquisition and processing in projects based on Internet of Things concept. The best arrangements are considered, including strategies and techniques of network interaction, modern methods of computing organizations in projects, ways of showing and visualizing information for better client observation and realization, as well as additional technical solutions potentially applicable to developments based on the concept of the Internet of things. Selection and integration of solutions into a solitary coordinated arrangement of data collection and processing is being carried out, the extent of use and incorporation of the anticipated framework is investigated. Consequences of the experiment results examination based on the National Instruments laboratory equipment are presented.
Artificial intelligence technologies are beginning to be actively used in human life, this is facilitated by the appearance and wide dissemination of the Internet of Things (IoT). Autonomous devices are becoming smarter in their way to interact with both a human and themselves. New capacities lead to creation of various systems for integration of smart things into Social Networks of the Internet of Things. One of the relevant trends in artificial intelligence is the technology of recognizing the natural language of a human. New insights in this topic can lead to new means of natural human-machine interaction, in which the machine would learn how to understand human's language, adjusting and interacting in it. One of such tools is voice assistant, which can be integrated into many other intelligent systems. In this paper, the principles of the functioning of voice assistants are described, its main shortcomings and limitations are given. The method of creating a local voice assistant without using cloud services is described, which allows to significantly expand the applicability of such devices in the future.
The importance of circular systems within radio-schemes increases in the process of transition from marco-to mirco- and then to nano-levels. It is worth mentioning, that on the macro-level any electric chain (since the time of Kirchhoff) as well as the simple radio circuit is usually replaced for necessary calculations by the model system of the interfaced closed chains, cycles (circles) and is being afterwards calculated, investigated or being really assembled, each cycle separately. Theoretically each fixed “coloured” point of a circle can define the function of any circle's element (the resistor, the condenser, the source, the rectifier, the transistor, etc.) or it can correspond to the material (conductor, insulator and so forth). The analysis and the computer modelling of the circles and their nano-structural elements are the purpose of this work.