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A New Method to Synthesise the Sinusoidal Oscillator Based on Series Negative Resistance-Capacitance and its Implementation Using a Single Commercial IC, LT1228
(KAUNAS UNIV TECHNOLOGY, 2023-08-01)alternative method for synthesising the sinusoidal oscillator based on series negative resistance capacitance is presented in this paper. The proposed topology is constructed with the series negative resistance-capacitance ... -
Exploring LoRaWAN Traffic: In-Depth Analysis of IoT Network Communications
(MDPI, 2023-08-22)In the past decade, Long-Range Wire-Area Network (LoRaWAN) has emerged as one of the most widely adopted Low Power Wide Area Network (LPWAN) standards. Significant efforts have been devoted to optimizing the operation of ... -
A simple ANN-MLP model for estimating 60-GHz PDP inside public and private vehicles
(Springer Nature, 2023-06-10)Radio wave propagation in an intra-vehicular (IV) environment is markedly different from other well-studied indoor scenarios, such as an office or a factory floor. While millimetre wave (mmWave)-based intra-vehicular ... -
Pulse shaping of the electromagnetic radiation from a narrow slot antenna
(Copernicus, 2023-03-21)A straightforward approach to achieve the prescribed shape of the far-field electromagnetic (EM) pulse radiated from a narrow slot antenna is introduced. It is demonstrated that the specified radiated pulse shape in a given ... -
Multi-Objective PSO with Variable Number of Dimensions for Space Robot Path Optimization
(MDPI, 2023-06-20)This paper aims to solve the space robot pathfinding problem, formulated as a multi-objective (MO) optimization problem with a variable number of dimensions (VND). This formulation enables the search and comparison of ... -
Persistent homology approach for human presence detection from 60 GHz OTFS transmissions
(MDPI, 2023-02-16)Orthogonal Time Frequency Space (OTFS) is a new, promising modulation waveform candidate for the next generation integrated sensing and communication (ISAC) systems, providing the environment-awareness capabilities together ... -
Hybrid Analog Computer for Modeling Nonlinear Dynamical Systems: The Complete Cookbook
(MDPI, 2023-03-30)This paper describes a design process for a universal development kit based on an analog computer concept that can model the dynamics of an arbitrarily complex dynamical system up to the fourth order. The constructed ... -
Pre-Design of Multi-Band Planar Antennas by Artificial Neural Networks
(MDPI, 2023-03-12)In this communication, artificial neural networks are used to estimate the initial structure of a multiband planar antenna. The neural networks are trained on a set of selected normalized multiband antennas characterized ... -
Chaotic states of transistor-based tuned-collector oscillator
(MDPI, 2023-05-08)This brief paper shows that robust chaotic behavior can be detected within a tuned-collector single-stage transistor-based oscillator. The content of this work also contributes to the problem of chaos localization in ... -
Long Distance Military Fiber-Optic Polarization Sensor Improved by an Optical Amplifier
(MDPI, 2023-04-06)The ever-increasing demands for the use of fiber-optic sensors powered by long optical fibers is forcing developers to solve problems associated with powering these remote sensors. Due to their non-electric character, these ... -
Reconnection-Less Reconfigurable Filter Based on Method of Unknown Nodal Voltages Using 4x4 Matrix
(IEEE, 2023-01-23)The paper introduces a novel design solution of a reconnection-less reconfigurable filter based on the method of unknown nodal voltages (MUNV). The filter offers all standard 2nd-order transfer functions and the electronic ... -
An EMI susceptibility study of different integrated operational transconductance amplifiers
(Journal of Electrical Engineering, 2023-03-07)This paper presents a comparative EMI susceptibility study of different integrated operational transconductance amplifier (OTA) topologies. We analyzed conventional well-known amplifier topologies based on the Miller OTA ... -
Time-Domain Electromagnetic Identification Based on Rectangular Grooves
(IEEE, 2022-09-20)Unique identification of goods and products is an integral part of today's automated world. Conventional optical systems cannot be operated in environments of poor visibility. The radio-frequency identification systems ... -
A Survey on the Use of Deep Learning Techniques for UAV Jamming and Deception
(MDPI, 2022-09-23)Unmanned aerial vehicles (UAVs) can be used for a variety of illegal activities (e.g., industrial espionage, smuggling, terrorism). Given their growing popularity and availability, and advances in communications technology, ... -
Extended and Generic Higher-Order Elements for MEMS Modeling
(MDPI, 2022-10-10)State-dependent resistors, capacitors, and inductors are a common part of many smart engineering solutions, e.g., in MEMS (Micro-Electro-Mechanical Systems) sensors and actuators, Micro/NanoMachines, or biomimetic systems. ... -
Possibility of compromising the security of free space optics communications caused by scattering on fog particles
(Optica Publishing Group, 2022-10-14)The paper presents experimental verification of coexistence and entry into a free space optical link channel. A numerical model, which describes the properties of the LOS (Line of Sight) channel and NLOS (Non-Line of Sight) ... -
A Focus on Electromobility within Smart City Solutions- Charging Stations, Renewable Energy, and Air Quality Monitoring
(MDPI, 2022-10-15)This paper reviews some of the existing methods for charging electric vehicles, generating renewable energy, and storing it. Plans of practical implementation in the city of Brno are compared with the situation in Glasgow. ... -
Chaos in analog electronic circuits: comprehensive review, solved problems, open topics and small example
(MDPI, 2022-11-04)This paper strives to achieve a comprehensive review of chaos in analog circuits and lumped electronic networks. Readers will be guided from the beginning of the investigations of simple electronic circuits to the current ... -
Electronic Tunability and Cancellation of Serial Losses in Wire Coils
(MDPI, 2022-09-28)This work presents a novel methodology to adjust the inductance of real coils (electronically) and to cancel out serial losses (up to tens or even hundreds of Ohms in practice) electronically. This is important in various ... -
Pulsed Electromagnetic Field Transmission through a Small Rectangular Aperture: A Solution Based on the Cagniard-DeHoop Method of Moments
(MDPI, 2022-06-20)Pulsed electromagnetic (EM) field transmission through a relatively small rectangular aperture is analyzed with the aid of the Cagniard-deHoop method of moments (CdH-MoM). The classic EM scattering problem is formulated ...
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