Results 21 to 30 of about 9,192 (258)

Transmit Beamforming Design Based on Multi-Receiver Power Suppression for STAR Digital Array

Sensors
The simultaneous transmit and receive (STAR) array system provides higher radiation gain and data rate compared to traditional radio system. Because of the various mutual couplings between each pair of transmit and receive elements, it is a great ...
Tairan Lin, Xizhang Wei, Jingtong Lai, Mingcong Xie   +3 more
doaj   +1 more source

Passive Intermodulation in Simultaneous Transmit–Receive Systems: Modeling and Digital Cancellation Methods

IEEE Transactions on Microwave Theory and Techniques, 2020
This article presents novel solutions for suppressing passive intermodulation (PIM) distortion in frequency-division duplexing (FDD)-based radio transceivers, stemming from nonlinear radio frequency (RF) components and simultaneous transmission and reception, with special emphasis on modern carrier aggregation networks.
Waheed, Muhammad Zeeshan, Korpi, Dani, Anttila, Lauri, Kiayani, Adnan, Kosunen, Marko, Stadius, Kari, Campo, Pablo Pascual, Turunen, Matias, Allen, Markus, Ryynanen, Jussi, Valkama, Mikko   +11 more
openaire   +4 more sources

Beam-shape loss for multiple-beam digital array radars

The Journal of Engineering, 2019
This study considers beam-shape loss (BSL) for pencil-beam digital array radars (DARs), when multiple simultaneous receive beams are formed to cover the volume illuminated by each transmit beam.
Yuan Yao, Guangxin Wu
doaj   +1 more source

Temperature Measurements in the Vicinity of Human Intracranial EEG Electrodes Exposed to Body-Coil RF for MRI at 1.5T

Frontiers in Neuroscience, 2020
The application of intracranial electroencephalography (icEEG) recording during functional magnetic resonance imaging (icEEG-fMRI) has allowed the study of the hemodynamic correlates of epileptic activity and of the neurophysiological basis of the blood ...
Hassan B. Hawsawi, Hassan B. Hawsawi, Hassan B. Hawsawi, Anastasia Papadaki, Anastasia Papadaki, John S. Thornton, John S. Thornton, David W. Carmichael, David W. Carmichael, Louis Lemieux, Louis Lemieux   +10 more
doaj   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Simultaneous Wireless Information and Power Transfer for MIMO Interference Channel Networks Based on Interference Alignment

Entropy, 2017
This paper considers power splitting (PS)-based simultaneous wireless information and power transfer (SWIPT) for multiple-input multiple-output (MIMO) interference channel networks where multiple transceiver pairs share the same frequency spectrum.
Anming Dong, Haixia Zhang, Minglei Shu, Dongfeng Yuan   +3 more
doaj   +1 more source

Airborne polarimetric Doppler weather radar: trade-offs between various engineering specifications [PDF]

Geoscientific Instrumentation, Methods and Data Systems, 2018
NCAR EOL is investigating potential configurations for the next-generation airborne phased array radar (APAR) that is capable of retrieving dynamic and microphysical characteristics of clouds and precipitation. The APAR will operate at C band.
J. Vivekanandan, E. Loew
doaj   +1 more source

The Simultaneous Transmit And Receive (STAR) Message Protocol

Supercomputing Frontiers and Innovations, 2017
The STAR protocol is introduced, which solves three problems with MPI, a well known secur- ity problem, and three exascale communication problems. Optical implementations are developed compatible with 100 Gbit/sec Ethernet. Automatic fault resilience mechanisms are discussed, which improve HPC quality of service, and meet the exascale reliability and ...
openaire   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Weighted Sum Transmit Power Minimization for Full-Duplex System With SWIPT and Self-Energy Recycling

IEEE Access, 2016
This paper considers a full-duplex (FD) point-to-point system consisting of one multi-antenna FD access point (FD-AP) and one two-antenna FD mobile station (FD-MS).
Zhongwei Hu, Chaowei Yuan, Fengchao Zhu, Feifei Gao   +3 more
doaj   +1 more source