Results 21 to 30 of about 878,105 (387)

Over-the-Air Suppression of Third-Order Intermodulation in a Two-Beam Steered Amplifier-Antenna Array

open access: yesIEEE Access, 2023
The effect of load-pull on 3rd order intermodulation (IM3) radiation characteristics of a transmitting active phased array is studied and a general model for predicting the spatial distribution of fundamental tones and intermodulation products is ...
Veli-Pekka Kutinlahti   +2 more
doaj   +1 more source

Linearization of broadband microwave amplifier [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2014
The linearization of broadband power amplifier for application in the frequency range 0.9-1.3 GHz is considered in this paper. The amplifier is designed for LDMOSFET characterized by the maximum output power 4W designing the broadband lumped ...
Đorić Aleksandra   +3 more
doaj   +1 more source

A Hybrid Self-Seeded Ti:sapphire Laser with a Pumping Scheme Based on Spectral Beam Combination of Continuous Wave Diode and Pulsed DPSS Lasers

open access: yesApplied Sciences, 2022
A wide variety of applications require high peak laser intensity in conjunction with a narrow spectral linewidth. Typically, injection-locked amplifiers have been employed for this purpose, where a continuous wave oscillator is amplified in a secondary ...
Volker Sonnenschein, Hideki Tomita
doaj   +1 more source

Pendulum energy harvester with amplifier

open access: yesJournal of Mechatronics, Electrical Power, and Vehicular Technology, 2018
This paper presents a new principle of inductive vibration power harvester. Harvester is a pendulum that uses energy capacitor which is the mass. The mass is connected to the pendulum via a gearbox to achieve greater movement of the pendulum that ...
Michal Černý   +3 more
doaj   +1 more source

13.5 μJ, 20 kHz Repetition Rate, Single Frequency Pr3+:YLF Master Oscillator Power Amplifier System

open access: yesPhotonics, 2023
This article describes a master oscillator and power amplifier (MOPA) system with a single longitudinal mode (SLM) and high-repetition-frequency Pr3+:YLF active medium that was end-pumped by two 444 nm laser diodes.
Weicheng Dai   +4 more
doaj   +1 more source

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

Deterministic Noise Analysis for Single-Stage Amplifiers by Extension of Indefinite Admittance Matrix

open access: yesIEEE Open Journal of Circuits and Systems, 2020
This article presents two methods, the block approach indefinite admittance matrix (BA-IAM) and the estimation-by-inspection, to analyse the effects of deterministic noise on single-stage, single-ended amplifiers by extending the indefinite admittance ...
Vijender Kumar Sharma   +2 more
doaj   +1 more source

Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach

open access: yesIEEE Access, 2022
This work proposes a Double Differential (DD) amplifier topology which exploits the advantages of the current-mode approach. DD amplifiers are useful as front-ends in standalone active electrodes for superficial electromyography (sEMG) wearable ...
Federico N. Guerrero   +3 more
doaj   +1 more source

Solid state microwave modules designed for millimiter wave electronic equipment and systems

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2016
The paper presents scientific, technological and production potential of Research Institute «Orion» in the field of creation of wide range of high performance active and passive solid-state microwave devices, modules and components as well as ...
Н. Ф. Карушкин   +2 more
doaj   +1 more source

Paving the Way for Tunable Graphene Plasmonic THz Amplifiers

open access: yesFrontiers in Physics, 2021
This study reviews recent advances in room-temperature coherent amplification of terahertz (THz) radiation in graphene, electrically driven by a dry cell battery.
Stephane A. Boubanga-Tombet   +12 more
doaj   +1 more source

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