Josephson junctions (JJs) are ubiquitous superconducting devices, enabling high sensitivity magnetometers and voltage amplifiers, as well forming the basis of performance cryogenic computer quantum computers. While JJ can be degraded by quasiparticles (QPs) formed from broken Cooper pairs, this phenomenon also opens opportunities to sensitively detect electromagnetic radiation. Here we demonstr...

Resistive RAMs (ReRAMs), where the resistance is changed by voltage and current biases, have extensively been studied to develop high-speed and large-capacity nonvolatile memories as well as functional nonvolatile memories. ReRAMs are so far intended for use as alternatives to contemporary flash memories, but the applications are not limited to Boolean alternatives. Although physical mechanisms...

I Abstract In the process of designing an electric power supply system for an aircraft, parameters like low weight and low losses are important. Reliability, robustness and low cost are other important factors. In the Saab Gripen aircraft, the design of the primary power supply of the electric flight control system was updated by exchanging a switching transistor regulator to a magnetic amplifi...

High-speed signal computation and communication are an essential part of modern that increases optical necessity. Therefore, researchers developed different types digital devices in the all-optical domain. Due to versatile gain medium reflective semiconductor amplifiers (RSOAs), it has various important applications passive networks. In comparison with amplifier (SOA), RSOAs exhibit better perf...

This paper reviews optical fiber amplifiers such as Erbium doped fiber amplifiers EDFAs, many types of Raman amplifiers RAs, Thulium doped fiber amplifiers, Tellurite-based fiber Raman amplifiers, semiconductor optical amplifiers and fiber optic parametric amplifiers, principle of operation and construction. As these amplifiers are used for optical fiber communication projects so we shall go th...

This paper presents a spatial-temporal single harmonic switching (STHS) transmitter array architecture with enhanced efficiency in the power back-off (PBO) region. STHS is an electromagnetic and circuit co-designed jointly optimized that realizes beamforming generation at same time. The temporal dimension originally added to achieve enhancement, which can be combined conventional enhancement me...

Series stacking of multiple devices in power amplifiers is a promising technique that has been explored recently at millimetre-wave frequencies to overcome some of the fundamental limitations of metal–oxide–semiconductor (CMOS) technology. Stacking multiple devices improve the output power and efficiency by increasing the achievable output voltage swing. Switching power amplifiers (PAs), such a...

A high efficiency and linearity P A solution is presented based on hybrid linearisation schemes that employ complementary techniques to overcome the weakness (or constraints) of either method on its own. I n particular, the high linearity of Cartesian loop is combined with the high efficiency of Envelope Elimination and Restoration (EER). The results of a prototype hybrid linearised PA built us...

Also the optical fiber amplifiers FAs that amplify weak signals such as the. Rare-Earth-Doped Fiber Lasers and Amplifiers, Michael J.F.Chapter 2. Optical and Electronic Properties of Rare Earth Ions in Glasses William J Miniscalco Abstract-HiRes PDF 2316 KB-PDF wlinks 2330 KB.amplifier materials in the system of rare-earth doped glasses are presented. rare-earth-doped ram concept manual pdf fib...

In this work, we analyze the effects of an inter-stage capacitor located between the power stage input and the driver stage output on the overall efficiency of a RF CMOS power amplifier and on gate-drain reliability problems. To verify the analyzed effects, we designed a RF CMOS power amplifier with a center frequency of 1.85GHz. Class-D amplifiers with a feedback resistor are used as driver st...