Results 41 to 50 of about 1,449,714 (389)

Perceptive Mobile Networks: Cellular Networks With Radio Vision via Joint Communication and Radar Sensing

IEEE Vehicular Technology Magazine, 2021
Joint communication and radar/radio sensing (JCAS), also known as dual-function radar communications, enables the integration of communication and radio sensing into one system, sharing a single transmitted signal.
Andrew Zhang, Md. Lushanur Rahman, Xiaojing Huang, Y. Guo, Shanzhi Chen, R. Heath   +5 more
semanticscholar   +1 more source

A Broadband Planar Spiral Antenna Design for Electromagnetic Signal Monitoring

IEEE Access, 2020
In order to meet the wide-band full-space radio monitoring task, the design of a circular-polarized planar dual-arm composite spiral antenna is presented in this paper.
Daifu Chen, Hongxin Zhang, Jun Xu
doaj   +1 more source

Software Holography: Interferometric Data Analysis for the Challenges of Next Generation Observatories

, 2008
Next generation radio observatories such as the MWA, LWA, LOFAR, CARMA and SKA provide a number of challenges for interferometric data analysis. These challenges include heterogeneous arrays, direction-dependent instrumental gain, and refractive and ...
Bhatnagar, Clark, Condon, Cornwell, Cornwell, Cornwell, Lonsdale, Matejek, McEwen, Michael Matejek, Miguel F. Morales, Mitchell, Ng, Sault, Sault, Scott, Tegmark, Tegmark   +17 more
core   +1 more source

Smart Radio Environments Empowered by Reconfigurable Intelligent Surfaces: How It Works, State of Research, and The Road Ahead

IEEE Journal on Selected Areas in Communications, 2020
Reconfigurable intelligent surfaces (RISs) are an emerging transmission technology for application to wireless communications. RISs can be realized in different ways, which include (i) large arrays of inexpensive antennas that are usually spaced half of ...
M. Di Renzo, Alessio Zappone, M. Debbah, M. Alouini, Chau Yuen, J. de Rosny, S. Tretyakov   +6 more
semanticscholar   +1 more source

Analysis of integrated UWB MIMO and CR antenna system using transmission line model with functional verification

Scientific Reports, 2022
This paper discusses the equivalent circuit model and functional verification of an integrated antenna system as its main focus. The integrated antenna system consists of two independent antenna systems, namely the Cognitive Radio antenna and the Ultra ...
P. Prabhu, Malarvizhi Subramani, Kyung-sup Kwak   +2 more
doaj   +1 more source

5G New Radio: Unveiling the Essentials of the Next Generation Wireless Access Technology [PDF]

IEEE Communications Standards Magazine, 2018
The fifth generation (5G) wireless access technology, known as New Radio (NR), will address a variety of usage scenarios from enhanced mobile broadband to ultra-reliable low-latency communications to massive machine type communications.
Xingqin Lin, Jingya Li, R. Baldemair, Thomas Cheng, S. Parkvall, Daniel Larsson, H. Koorapaty, M. Frenne, Sorour Falahati, Asbjörn Grövlen, Karl Werner   +10 more
semanticscholar   +1 more source

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

FEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii, Edoardo Andrea Cutolo, Daniele Montepietra, Claudia Battarra, Roberto Caferri, Stefano Capaldi, Zeno Guardini, Luca Dall'Osto, Roberto Bassi   +8 more
wiley   +1 more source

Dual-Fed DRA Subarrays Featuring Versatile Polarization Reconfigurability With High Port Isolation and Suppressed Cross-Polar Radiations

IEEE Open Journal of Antennas and Propagation
near square Dielectric Resonator Antenna (DRA) geometry with dual-aperture feeding has been explored. This aims in achieving a number of attractive features from a standalone unit as well as a 4-element subarray.
Satyajit Chakrabarti, Debatosh Guha
doaj   +1 more source

CREATING THE RT-32 RADIO TELESCOPE ON THE BASIC OF MARK-4B ANTENNA SYSTEM. 2. ESTIMATION OF THE POSSIBILITY FOR MAKING SPECTRAL OBSERVATIONS OF RADIO ASTRONOMICAL OBJECTS

Radio Physics and Radio Astronomy, 2019
Purpose: Technical capabilities of the MARK-4B antenna system necessary for its further using as a 32-meter radiotelescope (RT-32) and making simultaneous spectral radioastronomical observations in the C and K frequency ranges, are investigated ...
A. V. Antyufeyev, A. M. Korolev, O. M. Patoka, V. M. Shulga, O. M. Ulyanov, O. M. Reznichenko, V. V. Zakharenko, V. I. Prisiazhnii, A. V. Poichalo, V. V. Voityuk, V. N. Mamarev, V. V. Ozhinskii, V. P. Vlasenko, V. M. Chmil, V. I. Lebed, M. I. Palamar, A. V. Chaikovskii, Yu. V. Pasternak, M. A. Strembitskii, M. P. Natarov, S. O. Steshenko, V. V. Glamazdyn, A. S. Shubny, A. A. Kirilenko, D. Y. Kulik, A. M. Pylypenko   +25 more
doaj   +1 more source

DSS-13 26-meter antenna upgraded radiometer system [PDF]

, 1992
The Deep Space Station (DSS)-13 26-m antenna radiometer system was upgraded with an IBM-compatible computer-controlled configuration with improved supporting hardware and software.
Bury, G., Skjerve, L., Stelzried, C. T.
core   +1 more source