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Mostrando ítems 291-299 de 299
Artículo
Time-interleaving design of error-feedback sigma-delta modulators with infinite impulse response noise transfer function
(John Wiley and Sons Inc, 2021)
Transceivers built to modern communication standards tend to be as digital as possible, including the radio-frequency stages. This forces the digital-to-analogue converters (DACs) in the transmitter section to have a large ...
Artículo
Development of an Emergency Radio Beacon for Small Unmanned Aerial Vehicles
(Institute of Electrical and Electronics Engineers Inc., 2018-05)
Emergency locator transmitters (ELTs) used to locate manned aircrafts are not well suited to find and recover small crashed unmanned aerial vehicles (UAVs). ELTs utilize an international satellite system for search and ...
Artículo
A Compact Size Wideband RF-VGA Based on Second Generation Controlled Current Conveyors
(MDPI AG, 2020)
This paper presents a methodology to design a wideband radio frequency variable gain amplifier (RF-VGA) in a low-cost SiGe BiCMOS 0.35 μm process. The circuit uses two Class A amplifiers based on second-generation ...
Artículo
Common-Mode Voltage Harmonic Reduction in Variable Speed Drives Applying a Variable-Angle Carrier Phase-Displacement PWM Method
(MDPI, 2021)
Electric variable speed drives (VSD) have been replacing mechanic and hydraulic systems in many sectors of industry and transportation because of their better performance and reduced cost. However, the electric systems ...
Artículo
Optimizing Time Resolution Electronics for DMAPs
(MPDI, 2023-06-21)
Depleted Monolithic Active Pixel Sensors (DMAPSs) are foreseen as an interesting choice for future high-energy physics experiments, mainly because of the reduced fabrication costs. However, they generally offer limited ...
Artículo
Optimal Scheduling of Energy Storage Using A New Priority-Based Smart Grid Control Method
(MDPI, 2019-02)
This paper presents a method to optimally use an energy storage system (such as a battery) on a microgrid with load and photovoltaic generation. The purpose of the method is to employ the photovoltaic generation and ...
Artículo
0.35-V SR-Enhanced Bulk-Driven OTA for Loads up to 10 nF
(IEEE, 2024-05-17)
This study presents a low-voltage bulk-driven CMOS operational transconductance amplifier (OTA) operating in the subthreshold region designed to drive loads up to 10 nF, which is the largest value for this class of amplifiers. ...
Artículo
AIoT in Agriculture: Safeguarding Crops from Pest and Disease Threats
(MDPI, 2023-12)
A significant proportion of the world’s agricultural production is lost to pests and diseases. To mitigate this problem, an AIoT system for the early detection of pest and disease risks in crops is proposed. It presents a ...
Artículo
Informative Deep Reinforcement Path Planning for Heterogeneous Autonomous Surface Vehicles in Large Water Resources
(IEEE, 2024)
Water contamination in extensive aquatic resources is a pressing issue, especially during current drought conditions across the world. To adress this, a novel approach involving a heterogeneous sensing capabilities fleet ...