A New Topology of Load Network for Class F RF Power Amplifiers [PDF]
Engineering and Technology Journal, 2016 High efficiency RF power amplifiers are increasingly needed in modern mobile communication systems to reduce the battery size and power supply consumption.
Firas Mohammed Ali Al-Raie
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A Comprehensive Harmonic Analysis of Current-Mode Power Amplifiers
Energies, 2021 This work presents a comprehensive theoretical analysis of current-mode power amplifiers as a function of input power for different biasing classes under the common simplifying assumption of constant transconductance and hard current cut-off/saturation ...
Chiara Ramella +2 more
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Suppression of stimulated Brillouin scattering in optical fibers using a linearly chirped diode laser [PDF]
, 2012 The output of high power fiber amplifiers is typically limited by stimulated Brillouin scattering (SBS). An analysis of SBS with a chirped pump laser indicates that a chirp of 2.5 × 10^(15) Hz/s could raise, by an order of magnitude, the SBS threshold ...
Cahill, J. P. +7 more
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Photonic crystal fiber amplifiers for high power ultrafast fiber lasers
Nanophotonics, 2013 In recent years, ultrafast laser systems using large-mode-area fiber amplifiers delivering several hundreds of watts of average power has attracted significant academic and industrial interest.
Alkeskjold Thomas T. +8 more
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Class-E Amplifier Design Improvements for GSM Frequencies
The Journal of Engineering Research, 2011 Efficient power amplifiers are essential in portable battery-operated systems such as mobile phones. Also, the power amplifier (PA) is the most power-consuming building block in the transmitter of a portable system.
Z. Nadir, F. Touati
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Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects
IEEE Access, 2022 Testing of power electronic converters can advantageously be carried out in power-hardware-in-the-loop (P-HIL) environments that emulate the behavior of power grids, electric motors, etc. The interface between the model and the device under test requires
Julian Bohler +6 more
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Self-Phase Modulation-Induced Instability of High-Power Narrow-Linewidth Fiber Amplifiers
Photonics, 2023 In this study, we investigated the effect of self-phase modulation (SPM)-induced modulation instability (MI) on the spectral purity of high-power narrow-linewidth fiber amplifiers and established a spectral evolution model for SPM-induced MI in those ...
Xiaoqin Shan, Yunhan Zheng, Rihong Zhu
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High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique [PDF]
, 2010 Due to complex envelope and phase modulation employed in modern transmitters it is necessary to use power amplifiers that have high linearity. Linear power amplifiers (classes A, B and AB) are commonly used, but they suffer from low efficiency especially
Alou Cervera, Pedro +9 more
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GaN-based Power amplifiers for microwave applications
Ingeniería Investigación y Desarrollo, 2016 This paper presents a discussion about the design strategies of different kind of power amplifiers for RF/Microwave appli- cations, such as the tuned load power amplifier, class F, class F-1 and Doherty.
Jorge Julián Moreno-Rubio +5 more
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Design and implementation of a 1.65~3 GHz 500 watts power amplifier
Dianzi Jishu Yingyong, 2022 Modern transmission systems have put forward higher and higher requirements for the working frequency band and power level of power amplifiers, and the design of power amplifiers based on GaN power devices can meet these new requirements.
Xue Xin, Dong Liang, Wu Jiaqian
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