Browsing Moksliniai ir apžvalginiai straipsniai / Research and Review Articles by VGTU prioritized fields "IK0202 - Išmaniosios signalų apdorojimo ir ryšių technologijos / Smart Signal Processing and Telecommunication Technologies"
Now showing items 1-20 of 68
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0.13 μm CMOS traveling-wave power amplifier with on- and off-chip gate-line termination
(Electronics, 2020)Broadband amplifiers are essential building blocks used in high data rate wireless, radar, and instrumentation systems, as well as in optical communication systems. Only a traveling-wave amplifier (TWA) provides sufficient ... -
2D Vernier žiedinio laikinio skaitmeninio keitiklio modelis
(Mokslas – Lietuvos ateitis: Elektronika ir elektros inžinerija - 2018 = Science – future of Lithuania: Electronics and electrical engineering - 2018, 2018)Darbe aprašomas 2D Vernier žiedinio laikinio skaitmeninio keitiklio (LSK), skirto fazės detektoriui visiškai skaitmeninės struktūros dažnio sintezatoriuje, modelis, įgyvendintas vartojant VHDL aparatūros programavimo kalbą. ... -
5G standalone and 4G multi-carrier network-in-a-box using a software defined radio framework
(Sensors: Special issue: Experimentation in 5G and beyond networks: State of the art and the way forward, 2021)In this work, an open Radio Access Network (RAN), compatible, scalable and highly flexible Software Defined Radio (SDR)-based Remote Radio Head (RRH) framework is proposed and designed. Such framework can be used to implement ... -
A 79 dBΩ 1.2 GHz low-noise single-ended CMOS transimpedance amplifier for high-performance OTDR applications
(Electrical, control and communication engineering, 2019)The work reports on the design and performance of a low-noise low-cost CMOS transimpedance amplifier (TIA). The proposed circuit shall be employed in optical time-domain reflectometers and is implemented using an affordable ... -
A current spectrum-based algorithm for fault detection of electrical machines using low-power data acquisition devices
(Electronics: Advanced Fault Detection, Diagnosis and Prognosis in a Context of Renewable Power Generation, 2023)An algorithm to improve the resolution of the frequency spectrum by detecting the number of complete cycles, removing any fractional components of the signal, signal discontinuities, and interpolating the signal for fault ... -
A design methodology for programmable-gain low-noise TIA in CMOS
(Journal of electrical engineering-Elektrotechnický časopis, 2021)The work reports on the design of an area-efficient inductor-less low-noise CMOS trans\-impedance amplifier suitable for entry-level optical time-domain reflectometers. The work suggests a novel approach for implementing ... -
A method of optimizing characteristic impedance compensation using cut-outs in high-density PCB designs
(Sensors, 2022)The modern era of technology contains a myriad of high-speed standards and proprietary serial digital protocols, which evolve alongside the microwave and RF realm. The increasing data rate push the requirements for hardware ... -
A methodology improving off-chip, lumped RF impedance matching network response accuracy
(Electronics, 2018)Impedance matching is concurrent with any radio frequency (RF) circuit design and is essential for maximizing the gain and efficiency while minimizing the noise of high-frequency amplifiers as well as some mixer topologies. ... -
A review of advanced CMOS RF power amplifier architecture trends for low power 5G wireless networks
(Electronics, 2018)The structure of the modern wireless network evolves rapidly and maturing 4G networks pave the way to next generation 5G communication. A tendency of shifting from traditional high-power tower-mounted base stations towards ... -
Analysis of hybrid meander structures with additional shields
(Electronics, 2021)Models of hybrid meander structures with additional shields are presented in this paper. The influence of additional shields and their grounding positions on the electromagnetic characteristics of the hybrid meander ... -
Analysis of linux os security tools for packet filtering and processing
(Mokslas – Lietuvos ateitis. Elektronika ir elektros inžinerija = Science – Future of Lithuania. Electronics and electrical engineering, 2021)Open-source software and its components are widely used in various products, solutions, and applications, even in closed-source. Majority of them are made on Linux or Unix based systems. Netfilter framework is one of the ... -
Analysis of properties of the multilayer meander structures for wireless communications
(Electronics, 2023)Multilayer meander structures for wireless communications are presented in this paper. The miniaturization of meander structures is solved by positioning the meander conductor in multiple layers. The influence of the ... -
Analysis of SMT component land pad discontinuity effect on the overall transmission line impedance in high-speed applications
(Journal of Electrical Engineering-Elektrotechnicky Casopis, 2023)High-speed and high-frequency PCB interconnect solutions with the slightest discontinuities in the physical geometry along the microstrip transmission line can significantly degrade the integrity of the signal being ... -
Analytical review of event-based camera depth estimation methods and systems
(Sensors, 2022)Event-based cameras have increasingly become more commonplace in the commercial space as the performance of these cameras has also continued to increase to the degree where they can exponentially outperform their frame-based ... -
Applying artificial neural networks to solve the inverse problem of evaluating concentrations in multianalyte mixtures from biosensor signals
(Nonlinear analysis: modelling and control, 2023)We investigate the ill-posedness of the inverse biosensor problem when the biosensor signals are corrupted by noise. To solve the problem, we employ feed-forward and convolutional neural networks. Computational experiments ... -
Applying smart devices for gathering real-time feedback from students
(Computer applications in engineering education: Special issue: Mobile devices, 2021)This article presents and describes in detail an interactive method of teaching and gathering feedback from students by applying internet‐based survey systems and utilizing smart devices. Real‐time survey results are ... -
Assessment of the segmentation of RGB remote sensing images: A subjective approach
(Remote sensing: Special Issue The Quality of Remote Sensing Optical Images from Acquisition to Users, 2020)The evaluation of remote sensing imagery segmentation results plays an important role in the further image analysis and decision-making. The search for the optimal segmentation method for a particular data set and the ... -
Attenuation phenomena in gyroelectric waveguides with anisotropic dielectric layer
(Proceedings of the Romanian academy, Series A : mathematics, physics, technical sciences, information science, 2019)Models of gyroelectric GaAs waveguides with temperature sensitive anisotropic dielectric layer are presented in this paper. The influence of density of free carriers and temperature to the EM waves attenuation of gyroelectric ... -
Belaidžio ryšio siųstuvų-imtuvų susiderinimo būdų analizė
(Mokslas – Lietuvos ateitis: Elektronika ir elektros inžinerija - 2018 = Science – future of Lithuania: Electronics and electrical engineering - 2018, 2018)Integrinių grandynų gamybos technologinių procesų paklaidos didina daugiastandarčių siųstuvų-imtuvų komponentų parametrų sklaidą ir blogina jų veiką, tad siekiama komponentų verčių nuokrypius kompensuoti. Pagrindiniai ... -
Bepakopis reaktyviosios galios kompensatorius
(Mokslas – Lietuvos ateitis. Elektronika ir elektros inžinerija = Science – Future of Lithuania. Electronics and electrical engineering, 2020)Darbe pristatomas žemosios įtampos elektros tinklui skirtas 12 kVAr bepakopis reaktyviosios galios kompensatorius. Jis įgyvendintas naudojant tiristoriais valdomus induktyvumus, sujungtus žvaigžde, kurios vidurinis taškas ...