Results 31 to 40 of about 1,787,106 (304)
4.5-/4.9-GHz-Band Selective High-Efficiency GaN HEMT Power Amplifier by Characteristic Impedance Switching [PDF]
, 2018 A 4.5-/4.9-GHz band-selective GaN HEMT high-efficiency power amplifier has been designed and evaluated for next-generation wireless communication systems.
Kazuhiko HONJO +2 more
core +2 more sources
Research and Design of an X-Band UHF Power Amplifier
Известия высших учебных заведений России: Радиоэлектроника, 2022 Introduction. A method for designing power amplifiers for use in the transmitting channels of X-band transceiver modules is investigated. The design process was aimed at optimizing the relationship between the basic amplifier characteristics, including ...
Nguyen Xuan Luong +3 more
doaj +1 more source
On the power efficiency of sensory and ad-hoc wireless networks [PDF]
IEEE International Symposium on Information Theory, 2003. Proceedings., 2003 We consider the power efficiency of a communications channel, i.e., the maximum bit rate that can be achieved per unit power (energy rate). For additive white Gaussian noise (AWGN) channels, it is well known that power efficiency is attained in the low signal-to-noise ratio (SNR) regime where capacity is proportional to the transmit power.
Dana, Amir F., Hassibi, Babak
openaire +4 more sources
Linearization of dual-input Doherty power amplifiers [PDF]
, 2014 This paper studies the linearity of dual-input Doherty power amplifiers. We propose a linearization scheme that uses a combination of an efficiency-optimized static splitter and a vector-switched digital predistorter.
Cahuana, Jessica Chani +4 more
core +1 more source
Design of harmonic tuned power amplifier based on dynamic load-line GaN HEMT model
Dianzi Jishu Yingyong, 2020 Based on the dynamic load-line GaN HEMT large signal model and load-pull technology, a high efficiency harmonic tuned power amplifier operating at 2 GHz is designed and implemented. Under the condition that the parasitic parameters and package parameters
Huang Faliang, You Bin
doaj +1 more source
A 2.5-GHz asymmetric multilevel outphasing power amplifier in 65-nm CMOS [PDF]
, 2011 We present a high-efficiency transmitter based on asymmetric multilevel outphasing (AMO). AMO transmitters improve their efficiency over LINC (linear amplification using nonlinear components) transmitters by switching the output envelopes of the power ...
Barton, Taylor W. +5 more
core +1 more source
Identifying Boosted Objects with N-subjettiness [PDF]
, 2011 We introduce a new jet shape -- N-subjettiness -- designed to identify boosted hadronically-decaying objects like electroweak bosons and top quarks.
A Banfi +37 more
core +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background This study investigated how neighborhood‐level social determinants of health (SDOH), including redlining and neurological risk, interact to influence cognitive outcomes in children treated for brain tumors (CTBT). Methods A retrospective chart review of 161 CTBT aged 5–17 was conducted.
Alannah R. Srsich +5 more
wiley +1 more source
Research on load adaptive impedance matching of magnetic resonant wireless power transfer system
Gong-kuang zidonghua, 2020 In view of problem that current impedance matching methods ca't automatically adjust load impedance of magnetic resonant wireless power transfer system(MR-WPT) when load changes, which leads to reduction of energy transfer efficiency of the system, a ...
BAI Jingcai +3 more
doaj +1 more source
High-Efficiency 200-GHz Neutralized Common-Base Power Amplifiers in 250-nm InP HBT
IEEE Journal of Microwaves, 2023 The analysis, design, and measurement of two Indium Phosphide (InP) heterojunction bipolar transistor (HBT) power amplifier (PA) designs are presented at G-band with record efficiency.
Jeff Shih-Chieh Chien +2 more
doaj +1 more source