Results 31 to 40 of about 35,465 (120)

Floquet-Mode Traveling-Wave Parametric Amplifiers

PRX Quantum, 2022
Simultaneous ideal quantum measurements of multiple single-photon-level signals would advance applications in quantum information processing, metrology, and astronomy but require the first amplifier to be simultaneously broadband, quantum limited, and ...
Kaidong Peng, Mahdi Naghiloo, Jennifer Wang, Gregory D. Cunningham, Yufeng Ye, Kevin P. O’Brien   +5 more
doaj   +1 more source

High-voltage switch-mode assisted linear amplifier based voltage source for dielectric low frequency-domain spectroscopy measurements

The Journal of Engineering, 2019
This study presents a switch-mode assisted linear amplifier (SMALA) designed for use as a frequency-domain spectroscopy (FDS) excitation voltage source for the diagnostic testing of oil/paper insulation systems in large power transformers.
Shawn D. Nielsen, Geoffrey R. Walker, Geoffrey R. Walker   +2 more
doaj   +1 more source

Multi-Beam Large Fundamental Mode Neodymium Glass Regenerative Amplifier With Uniform Performance

Frontiers in Physics, 2022
In this study, the designing method of multi-beam regenerative amplifiers with the repetitive rate was proposed and demonstrated. To obtain multi-beam regenerative amplifiers with uniform performance, the disparities in output energy, energy stability ...
Song Gao, Xudong Xie, Jun Tang, Chen Fan, Xuejun Fu, Zhifei Chen, Ke Yao   +6 more
doaj   +1 more source

Utilizing Neural Network for Designing Load‐Independent Class E Inverter

IET Power Electronics
This paper presents the design, simulation, and fabrication of a load‐independent Class E inverter utilizing an artificial neural network (ANN) facilitator.
Mehrnaz Khodadoost, Mohsen Hayati, Hamed Abbasi   +2 more
doaj   +1 more source

Continuous-Variable Quantum Key Distribution Based on Heralded Hybrid Linear Amplifier with a Local Local Oscillator

Entropy, 2021
An improved continuous variable quantum key distribution (CVQKD) approach based on a heralded hybrid linear amplifier (HLA) is proposed in this study, which includes an ideal deterministic linear amplifier and a probabilistic noiseless linear amplifier ...
Yin Li, Yijun Wang, Yun Mao, Weishao Peng, Di Jin, Ying Guo   +5 more
doaj   +1 more source

Exploring the Development of Teachers’ Personal Pedagogical Content Knowledge about Climate Change Education during a Continuing Teacher Professional Development Course

Southern African Journal of Environmental Education
Climate Change Education (CCE) is widely recognised as one of the effective strategies for mitigating climate change challenges and risks. However, lack of the necessary knowledge and pedagogical skills among the majority of teachers in South Africa ...
Yvonne Nsubuga, Ingrid Schudel, Zintle Songqwaru, Helen Fox   +3 more
doaj   +1 more source

Active Antennas Beyond the Standard Impedance Matching Technique: Concepts and Applications

IEEE Open Journal of Antennas and Propagation
This paper presents a new design concept for improving active antennas’ performances beyond the standard impedance matching technique. The proposed approach expands the mismatch at the antenna-amplifier interface to create a voltage excess ...
Constant M. A. Niamien
doaj   +1 more source

A Review on the Flexure-Based Displacement Amplification Mechanisms

IEEE Access, 2020
Multifarious flexure-based displacement amplifiers have been proposed and studied in the past decades, showing importance in many industrial fields, such as bioengineering, optical instruments, and semiconductor technology.
Fangxin Chen, Qianjun Zhang, Yongzhuo Gao, Wei Dong   +3 more
doaj   +1 more source

Prelinearized Class-B Power Amplifier for Piezoelectric Transducers and Portable Ultrasound Systems

Sensors, 2019
Portable ultrasound systems typically suffer from unwanted heat and limited battery life, resulting in reduced system performance or the applicable number of piezoelectric transducer elements.
Hojong Choi
doaj   +1 more source

SURVEY OF HYBRID EDFA/RAMAN IN C AND L BANDS

Revista Ingeniería, Matemáticas y Ciencias de la Información, 2017
Optical amplifiers have had a breakthrough in recent years. Initially, amplification of optical signals was performed passing the optical signal to the electrical domain, then the amplified signal back again to the optical domain.
JUAN DAVID BONILLA
doaj   +1 more source