Results 111 to 120 of about 6,815,632 (371)

Cryogenic cooling for high power laser amplifiers [PDF]

, 2013
J. P. Perin, F. Millet, Martin Divoký, B. Rus   +3 more
openalex   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

High power RF solid state power amplifier system [PDF]

, 2011
A high power, high frequency, solid state power amplifier system includes a plurality of input multiple port splitters for receiving a high-frequency input and for dividing the input into a plurality of outputs and a plurality of solid state amplifier ...
Chavers, Donald Gregory, Richeson, James J., Sims, III, William Herbert   +2 more
core   +1 more source

AMPLITUDE AND FREQUENCY CHARACTERISTICS OF REGENERATIVE AMPLIFIERS OF O-TYPE OF THE SUBMILLIMETRIC WAVE BANDS

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
On the basis of the developed mathematical model of orboklystron-amplifiers with sheet beams calculations of frequency and peak characteristics of regenerative amplifiers on frequencies of 180-600 GHz are carried out.
A. V. Aksenchyk
doaj  

Design of a 0.1–16GHz Reconfigurable Ultra-Wideband MMIC Power Amplifier

IEEE Access
This paper proposes a reconfigurable ultra-wideband power amplifier based on reconfigurable technology. The power amplifier consists of a gain module and reconfigurable bias circuits.
Heyang Sun, Jingchang Nan, Jiadong Yu, Rufei Wang   +3 more
doaj   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

A Comparative Analysis of Doherty and Outphasing MMIC GaN Power Amplifiers for 5G Applications. [PDF]

Micromachines (Basel), 2023
Díez-Acereda V, Khemchandani SL, Del Pino J, Diaz-Carballo A.   +3 more
europepmc   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

A State-of-the-Art Review on CMOS Radio Frequency Power Amplifiers for Wireless Communication Systems. [PDF]

Micromachines (Basel), 2023
Hamid SS, Mariappan S, Rajendran J, Rawat AS, Rhaffor NA, Kumar N, Nathan A, Yarman BS.   +7 more
europepmc   +1 more source