Results 51 to 60 of about 113,694 (304)
IEEE AccessIn wireless transceivers, the power amplifier (PA) is the most power-consuming and critical component, as it must meet stringent linearity and reliability requirements while maintaining high efficiency.
Muhammad Abdullah Khan +2 more
doaj +1 more source
IEEE Access, 2020 In this paper, a novel outphasing power amplifier (PA) based on class-E amplifiers with shunt capacitances and shunt filters is proposed. The new design provides high drain efficiency for both peak and back-off power levels.
Pavel Afanasyev +3 more
doaj +1 more source
“RF-SoC”: Integration Trends of On-Chip CMOS Power Amplifier: Benefits of External PA versus Integrated PA for Portable Wireless Communications [PDF]
International Journal of Microwave Science and Technology, 2010 RFIC integration has seen dramatic progress since the early 1990s. For example, Si-based single-chip products for GSM, WLAN, Bluetooth, and DECT applications have become commercially available. However, RF power amplifiers (PAs) and switches tend to remain off-chip in the context of single-chip CMOS/BiCMOS transceiver ICs for handset applications. More
openaire +1 more source
Multimode multiband power amplifier with tapped transformer for efficiency enhancement in low power mode [PDF]
, 2016 Multimode multiband connectivity has become a defacto requirement for smartphones with 3G WCDMA/4G LTE applications. In this research, a two-stage multimode multiband (MMMB) power amplifier (PA) with multiple gated transistor (MGTR) and configurable ...
Bukhori, Muhammad Faiz +6 more
core +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
The Journal of Engineering, 2015 Integration of a class-E power amplifier (PA) and a thin-film bulk acoustic wave resonator (FBAR) filter is shown to provide high power added efficiency in addition to superior out-of-band spectrum suppression.
Kyle Holzer, Jeffrey S. Walling
doaj +1 more source
Engineering Proceedings, 2023 This research presents a comparative analysis of design parameters in modern power amplifier (PA) architecture trends in various CMOS nano-meter technologies.
Muhammad Ovais Akhter
doaj +1 more source
PAPR Constrained Power Allocation for Iterative Frequency Domain Multiuser SIMO Detector [PDF]
, 2014 Peak to average power ratio (PAPR) constrained power allocation in single carrier multiuser (MU) single-input multiple-output (SIMO) systems with iterative frequency domain (FD) soft cancelation (SC) minimum mean squared error (MMSE) equalization is ...
Karjalainen, Juha +3 more
core +2 more sources
FEBS Letters, EarlyView.Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura +2 more
wiley +1 more source
, 2016 Noncontiguous transmission schemes combined with high power-efficiency requirements pose big challenges for radio transmitter and power amplifier (PA) design and implementation.
Abdelaziz, Mahmoud +5 more
core +1 more source