Results 21 to 30 of about 1,717 (209)

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

open access: yesMicromachines, 2023
A comparison between a fully integrated Doherty power amplifier (DPA) and outphasing power amplifier (OPA) for fifth Generation (5G) wireless communications is presented in this paper. Both amplifiers are integrated using pHEMT transistors from the OMMIC’
Victoria Díez-Acereda   +3 more
doaj   +2 more sources

A 79 GHz SiGe Doherty Power Amplifier Suitable for Next-Generation Automotive Radar

open access: yesIEEE Journal of Microwaves
The number of environment-detecting sensors inside cars continuously increases, to enable failsafe autonomous driving. With more sensors, the probability of performance degrading interferences increases.
Jan Schoepfel   +4 more
doaj   +4 more sources

Doherty Power Amplifier for LTE-Advanced Systems

open access: yesTechnologies, 2019
The design and implementation of an asymmetrical Doherty power amplifier are discussed, where two Cree GaN High Electron Mobility Transistors (HEMTs) devices are used for designing an asymmetrical Doherty power amplifier to achieve saturated power of 48 ...
Ahmed M. Abdulkhaleq   +7 more
doaj   +3 more sources

Design Of A Doherty Power Amplifier For GSM Systems

open access: yesTikrit Journal of Engineering Sciences, 2013
This paper presents the design and analysis of Doherty power amplifier. The Doherty amplifier is used in  a base station for mobile system because of its high efficiency.
Saad Wasmi Osman
doaj   +1 more source

Inverted asymmetric Doherty power amplifier driven by two-stage symmetric Doherty amplifier

open access: yesElectronics Letters, 2010
A new high efficiency Doherty structure for code division multiple access 2000 1×3-FA test signal is presented. The proposed Doherty structure consists of a two-stage symmetric Doherty drive amplifier and an inverted asymmetric Doherty power amplifier.
S.H. Chun, D.H. Jang, J.Y. Kim, J.H. Kim
exaly   +2 more sources

A 28-36 GHz Optimized CMOS Distributed Doherty Power Amplifier with A New Wideband Power Divider Structure [PDF]

open access: yesJournal of Electrical and Computer Engineering Innovations, 2020
Background and Objectives: In this paper, a new design strategy was proposed in order to enhance bandwidth and efficiency of power amplifier.Methods: To realize the introduced design strategy, a power amplifier was designed using TSMC CMOS 0.18um ...
M. Mirzajani Darestani   +2 more
doaj   +1 more source

Theoretical and Experimental Analysis of Reversed Uneven Power Splitting Technique in GaN MMIC Doherty Power Amplifiers

open access: yesIEEE Access, 2023
We present a theoretical and experimental analysis of the use of a reversed uneven power splitting (RUPS) technique for asymmetric Doherty power amplifiers (PAs).
Cheol Ho Kim, Hyeon-June Kim
doaj   +1 more source

Systematic Design Methodology of Broadband Doherty Amplifier Using Unified Matching/Combining Networks With an Application to GaN MMIC Design

open access: yesIEEE Access, 2021
This paper presents a new design methodology for broadband Doherty architecture using the three-port input and output networks technique. The proposed topology was developed to overcome the Doherty power amplifier (DPA) bandwidth limitations.
A. M. Elelimy Abounemra   +6 more
doaj   +1 more source

Filtering Doherty power amplifier [PDF]

open access: yesIET Microwaves, Antennas & Propagation, 2020
At present, it is a trend in wireless communication to integrate conventional separate components into a single one for further miniaturisation and whole performance optimisation. In this study, a novel filtering Doherty power amplifier topology is proposed, which incorporates a bandpass power divider for power division.
Xiaobo Qi, Fei Xiao
openaire   +1 more source

Platinum Group Element Traces of CAMP Volcanism Associated With Low‐Latitude Environmental and Biological Disruptions

open access: yesGeophysical Monograph Series, Page 263-304., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside   +3 more
wiley  

+2 more sources

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