Results 31 to 40 of about 12,139 (192)
IEEE Access, 2019 This paper presents a two-stage stacked power amplifier integrated circuit (PAIC) for broadband and high efficiency using a 2-μm InGap/GaAs HBT process with a second-harmonic control circuit and a bias-switching circuit for an average power ...
Wooseok Lee +10 more
doaj +1 more source
A Novel 4H-SiC MESFET with a Heavily Doped Region, a Lightly Doped Region and an Insulated Region
Micromachines, 2021 A novel 4H-SiC MESFET was presented, and its direct current (DC), alternating current (AC) characteristics and power added efficiency (PAE) were studied.
Hujun Jia +4 more
doaj +1 more source
Wideband Reconfigurable Harmonically Tuned GaN SSPA for Cognitive Radios [PDF]
The paper presents the architecture of a wideband reconfigurable harmonically-tuned Gallium Nitrate (GaN) Solid State Power Amplifier (SSPA) for cognitive radios. When interfaced with the physical layer of a cognitive communication system, this amplifier
Barbosa Kortright, Miguel A. +2 more
core +3 more sources
A Transformer-Based Dual-Mode Ka-Band CMOS Power Amplifier With Enhanced Back-Off Efficiency
IEEE Journal of MicrowavesThis paper presents the differential-to-single-ended load-modulated (DISEL)-power amplifier, a transformer-based dual-mode Ka-band CMOS power amplifier designed to enhance power-added efficiency (PAE) under output back-off conditions while maintaining ...
Hyunsoo Kim, Jaeyong Lee, Changkun Park
doaj +1 more source
IEEE Access, 2018 This paper proposes a design method to minimize the phase distortion (AM/PM) in gallium nitride (GaN) power amplifiers (PAs) without significantly worsening other key features such as efficiency, amplitude distortion, and gain.
Rocco Giofre +2 more
doaj +1 more source
Large signal 2nd harmonic on wafer MESFET characterization [PDF]
, 1990 An automatic test set which performs a real time harmonic load-pull characterization is proposed. An active load technique is used in order to set the load at the test frequency and its harmonics and a complete set of device parameters useful for power ...
A. Ferrero, U. Pisani
core +1 more source
FEBS Open Bio, EarlyView.Cytosolically synthesized chloroplast preproteins are translocated across the outer and inner envelope membranes through translocons called TOC and TIC, respectively. In green algae and plants, the TIC core is composed of essential membrane proteins, Tic12, Tic20, and Tic214.
Mengyi Li, Xueyang Zhao, Masato Nakai
wiley +1 more source
First RF Power Operation of AlN/GaN/AlN HEMTs With >3 A/mm and 3 W/mm at 10 GHz
IEEE Journal of the Electron Devices Society, 2021 The AlN/GaN/AlN heterostructure is attractive for microwave and millimeter-wave power devices due to its thin top barrier, tight carrier confinement, and improved breakdown voltage.
Austin Hickman +7 more
doaj +1 more source
Third-order Intermodulation Reduction in Mobile Power Amplifiers by the First Stage Bias Control [PDF]
, 2012 In this paper, the third order intermodulation distortion (IMD3) of three-stage power amplifier (PA) is analyzed using the Volterra series. The analysis explains how the total IMD3 of the three-stage power amplifier can be reduced by the first-stage bias
Jung, J. H., Kwak, C. H., Lee, J. S.
core +1 more source
Digital Predistortion for High Efficiency Power Amplifier Architectures Using a Dual-input Modeling Approach [PDF]
, 2012 In this paper, a novel model is proposed for dual-input high efficiency power amplifier (PA) architectures, such as envelope tracking (ET) and varactor-based dynamic load modulation (DLM).
Cao, Haiying +4 more
core +1 more source