Results 31 to 40 of about 86,854 (292)

Precision Design and Fabrication of Noise-free High-Frequency Amplifier Board for Enhanced Signal Processing [PDF]

open access: yesITM Web of Conferences, 2023
An optical signal processing system is widely used for long-distance signal transmission with high speed and low attenuation. It plays a fundamental role in optical communication systems that involves transmitting, receiving, amplifying, and manipulating
Narvekar Sonal, Sharma Kadambari
doaj   +1 more source

Non-Foster Impedance Wideband Matching Technique for Electrically Small Active Antenna [PDF]

open access: yesInternational Journal of Antennas and Propagation, 2013
This paper investigates a non-Foster wideband circuit matching technique for an electrically small antenna (ESA). By introducing a negative impedance convertor into an active network, the active network can obtain an equivalent input gain at input port to improve gain, sensitivity and output ratio of signal to noise.
Wenxing Li   +3 more
openaire   +2 more sources

Modal analysis and nonlinear characterization of an airborne power ultrasonic transducer with rectangular plate radiator [PDF]

open access: yes, 2018
Some industrial processes like particle agglomeration or food dehydration among others can be enhanced by the use of power ultrasonic technologies.
Acosta, V.M.   +3 more
core   +1 more source

High-Power Wire Bonded GaN Rectifier for Wireless Power Transmission

open access: yesIEEE Access, 2020
A novel wire bonded GaN rectifier for high-power wireless power transfer (WPT) applications is proposed. The low breakdown voltage in silicon Schottky diodes limits the high-power operations of microwave rectifier.
Sumin David Joseph   +5 more
doaj   +1 more source

Optimal Planar Electric Dipole Antenna

open access: yes, 2019
Considerable time is often spent optimizing antennas to meet specific design metrics. Rarely, however, are the resulting antenna designs compared to rigorous physical bounds on those metrics. Here we study the performance of optimized planar meander line
Capek, Miloslav   +6 more
core   +2 more sources

Active textile antennas in professional garments for sensing, localisation and communication [PDF]

open access: yes, 2014
New wireless wearable monitoring systems integrated in professional garments require a high degree of reliability and autonomy. Active textile antenna systems may serve as platforms for body-centric sensing, localisation, and wireless communication ...
Agneessens, Sam   +10 more
core   +2 more sources

Ultrasonic Air Coupled Transducer Output Impedance Measurement Technique

open access: yesElektronika ir Elektrotechnika, 2019
Estimation of the output impedance of ultrasonic transducers is required for electrical matching circuits design and for receiving amplifiers noise optimization.
Linas Svilainis   +2 more
doaj   +1 more source

Design of Howland current sources using differential evolution optimization

open access: yesJournal of Electrical Bioimpedance, 2020
Howland circuits have been widely used in Electrical Bioimpedance Spectroscopy applications as reliable current sources. This paper presents an algorithm based on Differential Evolution for the automated design of Enhanced Howland Sources according to ...
Morcelles Kaue Felipe   +2 more
doaj   +1 more source

A 2-MHz 2-kW voltage-source inverter for low-temperature plasma generators: implementation of fast switching with a third-order resonant circuit [PDF]

open access: yes, 1999
This paper presents a specially designed third-order resonant circuit intended to achieve fast switching operation for a voltage-source series-resonant inverter using four MOSFETs.
Akagi, Hirofumi, Fujita, Hideaki
core   +1 more source

Meshed High-Impedance Matching Network-Free Rectenna Optimized for Additive Manufacturing

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
Additive manufacturing using direct-write or screen printing represent low-waste methods for fabricating antennas on low-cost flexible substrates. To realize rectennas using low-resolution printing methods, high-impedance antennas with simple printable ...
Mahmoud Wagih   +2 more
doaj   +1 more source

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