Results 11 to 20 of about 288,937 (288)

Modulation Bandwidth Enhancement of Monolithically Integrated Mutually Coupled Distributed Feedback Laser

Applied Sciences, 2020
Modulation bandwidth enhancement of directly modulated semiconductor lasers (DMLs) has attracted broad interest to accommodate the tremendously growing demand for network traffic.
Wu Zhao, Yuanfeng Mao, Dan Lu, Yongguang Huang, Lingjuan Zhao, Qiang Kan, Wei Wang   +6 more
doaj   +1 more source

An Enhanced Scheme of Multi-Stage Amplifier With High-Speed High-Gain Blocks and Recycling Frequency Cascode Circuitry to Improve Gain-Bandwidth and Slew Rate

IEEE Access, 2019
With the existing circuit topologies, the conventional multi-stage amplifiers (MSA) can only achieve low gain-bandwidths (<;5 MHz) and low slew rates (<;10 V/μs).
Po-Yu Kuo, Sheng-Da Tsai
doaj   +1 more source

Vacuum Testing of a Miniaturized Switch Mode Amplifier Powering an Electrothermal Plasma Micro-Thruster

Frontiers in Physics, 2017
A structurally supportive miniaturized low-weight (≤150 g) radiofrequency switch mode amplifier developed to power the small diameter Pocket Rocket electrothermal plasma micro-thruster called MiniPR is tested in vacuum conditions representative of space ...
Christine Charles, Wei Liang, Luke Raymond, Juan Rivas-Davila, Roderick W. Boswell   +4 more
doaj   +1 more source

Direct Current Coupled Recordings of Cortical Spreading Depression Using Silicone Probes

Frontiers in Cellular Neuroscience, 2017
Electrophysiological assessment of infraslow (<0.1 Hz) brain activities such as cortical spreading depression (SD), which occurs in a number of pathologies including migraine, epilepsy, traumatic brain injury (TBI) and brain ischemia requires direct ...
Azat Nasretdinov, Nailya Lotfullina, Daria Vinokurova, Julia Lebedeva, Gulshat Burkhanova, Kseniya Chernova, Andrey Zakharov, Roustem Khazipov, Roustem Khazipov   +8 more
doaj   +1 more source

Sensitivity of the spherical gravitational wave detector MiniGRAIL operating at 5 K [PDF]

, 2007
We present the performances and the strain sensitivity of the first spherical gravitational wave detector equipped with a capacitive transducer and read out by a low noise two-stage SQUID amplifier and operated at a temperature of 5 K.
Bassan, M., de Waard, A., Fafone, V., Flokstra, J., Frossati, G., Gottardi, L., Minenkov, Y., Podt, M., Rocchi, A., Usenko, A.   +9 more
core   +3 more sources

Two Improved Cancellation Techniques for Direct-Conversion Receivers

Journal of Electrical and Computer Engineering, 2016
To solve the problems of carrier leakage and DC offset in direct-conversion receiver (DCR) system, the paper proposed two kinds of improved technology to overcome the problems in DCR system.
Xueyuan Hao, Xiaohong Yan
doaj   +1 more source

A Low-Noise Direct Incremental A/D Converter for FET-Based THz Imaging Detectors

Sensors, 2018
This paper presents the design, implementation and characterization results of a pixel-level readout chain integrated with a FET-based terahertz (THz) detector for imaging applications. The readout chain is fabricated in a standard 150-nm CMOS technology
Moustafa Khatib, Matteo Perenzoni
doaj   +1 more source

Resonance at the Rabi frequency in a superconducting flux qubit

, 2014
We analyze a system composed of a superconducting flux qubit coupled to a transmission-line resonator driven by two signals with frequencies close to the resonator's harmonics.
Greenberg, Ya. S., Il'ichev, E., Oelsner, G., Shevchenko, S. N.   +3 more
core   +1 more source

Novel Broadband Amplifier for Mid-Infrared Semiconductor laser and applications in spectroscopy [PDF]

, 2010
An amplifier design for broadband Mid-IR buried-hetero (BH) structure epitaxial laser is presented, and external cavity design based on this amplifier is described.
Deev, Andrei, Li, Zhenyu, Scherer, Axel, Tang, Yongchun, Wu, Sheng   +4 more
core   +1 more source

Quantum characteristics of a nondegenerate three-level laser with NDPA pumped by electron bombardment

Physics Open
This study investigates the entanglement and squeezing characteristics of light generated by a non-degenerate, three-level laser with a non-degenerate parametric amplifier, which is pumped by electron bombardment to the top level and coupled to a two ...
Aliyyi Adem
doaj   +1 more source