Results 31 to 40 of about 2,043,803 (299)

Advancements in Doherty Power Amplifiers for High Efficiency, Broadband 5G, and Beyond

IEEE Access
Doherty Power Amplifiers (DPAs) are pivotal in meeting the stringent demands of modern wireless communication systems, including 5G New Radio, Wi-Fi 7, and joint communication and sensing (JCAS), where high peak-to-average power ratios (PAPR), wide ...
Meysam Azimi-Roein, Majid Baghaei-Nejad, Hafiz Hejazi   +2 more
doaj   +1 more source

Prediction method of primary frequency modulation capability of power system based on MEA-BP algorithm

Energy Reports, 2023
In order to accurately predict the primary frequency modulation capability of power system when frequency deviation occurs, a method for predicting primary frequency modulation performance of power system based on improved neural network with thought ...
Yudong Zhang, Fan Tang, Xiaobin Liang, Jian Sun, Hongxun Li, Hang Ru   +5 more
doaj   +1 more source

Wind Turbine Load Optimization Control Strategy Based on LIDAR Feed-Forward Control for Primary Frequency Modulation Process with Pitch Angle Reservation

Energies, 2023
Because wind power is connected to the grid on a large scale, frequency fluctuation in the power grid, which is defined as a system safety risk to the power grid, occurs from time to time.
Deyi Fu, Lingxing Kong, Lice Gong, Anqing Wang, Haikun Jia, Na Zhao   +5 more
doaj   +1 more source

Abatacept for Prophylaxis of Acute and Chronic Graft‐Versus‐Host‐Disease in Children Undergoing Allogeneic Hematopoietic Stem Cell Transplantation—A Systematic Review and Meta‐Analysis of Cohort Studies

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Graft‐versus‐host disease (GvHD) remains one of the most significant complications of hematopoietic stem cell transplantation (HSCT). Abatacept, a selective T‐cell costimulation modulator, is a relatively novel prophylactic agent, though pediatric data remain limited.
Matthijs D. Kruizinga, Anne B. Verbeek, Caroline A. Lindemans, Emilie P. Buddingh   +3 more
wiley   +1 more source

Negative Conductance Load Modulation RF Power Amplifier [PDF]

, 2010
The number of mobile wireless devices on the market has increased substantially over the last decade. The frequency spectrum has become crowded due to the number of devices demanding radio traffic and new modulation schemes have been developed to ...
Neslen, Cody R
core   +1 more source

Emulation of Non-Reciprocity applied in Load-Modulated Power Amplifier Architectures using Single Amplifier Load-Pull Measurements [PDF]

, 2021
An active load-pull measurement technique is exploited to test the performance of novel high-efficiency power amplifier (PA) concepts based on non-reciprocity.
Fager, Christian, Buisman, Koen,, Zhou, Han, Fager, Christian,, Perez-Cisneros, Jose-Ramon, Zhou, Han,, Buisman, Koen, Perez-Cisneros, Jose-Ramon,, Koen Buisman, Christian Fager, Han Zhou, Jose-Ramon Perez-Cisneros   +11 more
core   +1 more source

An efficiency optimized controlling scheme for dynamic load modulation of power amplifiers

, 2008
An efficiency optimized controlling scheme for dynamic load modulation (DLM) of power amplifiers (PAs) is proposed. In this scheme, both the input signal and load impedance are controlled to allow high efficiency operation of PAs for a desired output ...
Fager, Christian, Mashad Nemati, Hossein, Zirath, Herbert, Gustavsson, Ulf, Christian Fager, Ulf Gustavsson, Herbert Zirath, Hossein M. Nemati   +7 more
core   +2 more sources

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo, Weisi Dai, Jie Mao, Mei Ye, Xingshan Lu, Xiaocui Zhang   +5 more
wiley   +1 more source

Event‐related potential patterns of selective attention modulated by perceptual load

Brain and Behavior, 2023
Introduction A high perceptual load can effectively prevent attention from being drawn to irrelevant stimuli; however, the neural pattern underlying this process remains unclear.
Zhuo Chen, Yun Qin, Maoqin Peng, Wei Zhao, Xuqian Shi, Danwei Lai, Erwei Yin, Ye Yan, Dezhong Yao, Tiejun Liu   +9 more
doaj   +1 more source

Frequency-Modulation Controlled Load-Independent Class-E Inverter

IEEE Access, 2021
This paper proposes the frequency-modulation (FM) controlled load-independent class-E inverter, which has robustness against simultaneous variations of the load and the components in the output resonant filter. The main idea is to apply the FM control of
Yutaro Komiyama, Shuya Matsuhashi, Wenqi Zhu, Taichi Mishima, Yuki Ito, Takeshi Uematsu, Kien Nguyen, Hiroo Sekiya   +7 more
doaj   +1 more source