Browsing by VGTU prioritized fields "IK0202 - Išmaniosios signalų apdorojimo ir ryšių technologijos / Smart Signal Processing and Telecommunication Technologies"
Now showing items 1-20 of 150
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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 ... -
2023 IEEE Open Conference of Electrical, Electronic and Information Sciences (eStream), 27 April 2023, Vilnius, Lithuania
(2023)We are very glad to welcome our colleagues - young scientists, researchers and practitioners to the 10-th IEEE Open Conference of Electrical, Electronic and Information Sciences (eStream‘ 2023), held in Vilnius Gediminas ... -
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 CrowdCell with mm-Wave SDR based backhaul
(Cognitive Radio-Oriented Wireless Networks : 14th EAI International Conference "CrownCom 2019", Poznan, Poland, June 11–12, 2019 : proceedings, 2019)This paper presents the 5G CrowdCell platform developed by lime microsystems, as well as future mm-Wave SDR platforms which are under development, and which, among other applications, will be used as the CrowdCell backhaul. -
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 capacitive feedback 80 dBΩ 1.1 GHz CMOS transimpedance amplifier with improved biasing
(Proceedings of the 27th international conference "Mixed design of integrated circuits and systems", June 25-27, 2020, Lódz, Poland, 2020)The work presents the design of an area-efficient low-noise high-performance CMOS transimpedance amplifier for optical time-domain reflectometers. The proposed solution is based on a low-noise capacitive feedback structure ... -
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 ... -
A review of the basic power amplifier linearization methods
(2020 IEEE Open Conference of Electrical, Electronic and Information Sciences (eStream), 30 April 2020, Vilnius, Lithuania: proceedings of the conference / organized by Vilnius Gediminas Technical University, 2020)This paper reviews the main groups of power amplifier linearization methods. There are three basic groups of linearization methods: feedforward, feedback and pre-distortion. The principle of operation of mentioned linearization ... -
Analysis and method for reducing the noise of a vertical channel of the sampling oscilloscope
(2019 Open Conference of Electrical, Electronic and Information Sciences (eStream), 25 April 2019, Vilnius, Lithuania : proceedings of the conference / organized by: Vilnius Gediminas Technical University, 2019)The approach to reduce the noise of a vertical channel of the sampling oscilloscope is presented in this paper. In general, the vertical channel of the sampling oscilloscope consists of a high-frequency sampling circuit ... -
Analysis of frequency characteristics of meander structures with different connecting electrodes
(2020 IEEE 8th Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE), 22-24 April 2021, Vilnius, 2021)Meander structures are often used in microwave devices because of small dimensions and positive features. The features of the meander structures like passband, characteristic impedance, delay time and others could be ... -
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 ...