Results 31 to 40 of about 367,594 (304)

Load Mismatch Compensation of Load-Modulated Power Amplifiers: A Comprehensive Review

Energies
With the diversification, acceleration, and arraying of wireless communication systems, power amplifiers (PAs) face stricter demands in terms of RF operation bandwidth, high-efficiency power range, and load mismatch compensation.
Yufeng Zang, Weimin Shi, Jinting Liu, Tian Qi, Mingyu Li   +4 more
doaj   +1 more source

Coordinate strategy of dual-pulse-width-modulation converter based on direct power control with load power feed-forward

Measurement + Control, 2020
The common dual-pulse-width-modulation converter adopts the independent method to control the rectifier and inverter, which has the defects including direct current voltage fluctuation, slow system response and so on.
Bo Fan, Zhumu Fu, Kai Michels, Jiangtao Fu   +3 more
doaj   +1 more source

A Comprehensive Analysis of Bandwidth and Size for Four-Types of Series-Combined Transformer-Based Doherty Output Networks: Theory and Examples

IEEE Access
This paper presents theory-driven design guidelines for four types of series-combined transformer (SCT)-based Doherty output matching networks to maximize bandwidth (BW).
Seokchul Lee, John D. Cressler
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

Analysis and design of a modular multilevel converter with trapezoidal modulation for medium and high voltage DC-DC transformers [PDF]

, 2015
Conventional dual active bridge topologies provide galvanic isolation and soft-switching over a reasonable operating range without dedicated resonant circuits.
Adam, Grain P., Ahmed, Shehab, Gowaid, I. A., Holliday, Derrick, Williams, Barry W.   +4 more
core   +2 more sources

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

Multidimensional Index Modulation in Wireless Communications

, 2017
In index modulation schemes, information bits are conveyed through indexing of transmission entities such as antennas, subcarriers, times slots, precoders, subarrays, and radio frequency (RF) mirrors.
Bhat, Sandeep, Chockalingam, A., Jacob, Swaroop, Shamasundar, Bharath   +3 more
core   +1 more source

Motion adaptation and attention: A critical review and meta-analysis [PDF]

, 2019
The motion aftereffect (MAE) provides a behavioural probe into the mechanisms underlying motion perception, and has been used to study the effects of attention on motion processing.
Adams, Wendy J., Bartlett, Laura K., Graf, Erich W., Hedger, Nicholas   +3 more
core   +1 more source

Quadrature Phase Shift Keying (QPSK) Modulator Design using Multi-Port Network in Multilayer Microstrip-Slot Technology for Wireless Communication Applications [PDF]

, 2015
The design of the quadrature phase shift keying (QPSK) modulator by using a multi-port network is proposed in this article for the use in wireless communication applications. The multi-port network is in the form of multilayer microstrip-slot technology.
Mohamed Ghazali, S. N. A., Seman, N.
core   +2 more sources

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