Results 1 to 10 of about 132 (115)
A Wide-Angle and PON Fully Polarimetric Retrodirective Array at the X Band. [PDF]
Micromachines (Basel)A new type of fully polarimetric retrodirective array (RDA) using a PON-type structure is proposed in this paper. The fully polarimetric property is the result of the proposed phase conjugation circuits, which perform phase conjugation processing on the ...
Zhao S, Chen L, Pan J, Zhang T.
europepmc +3 more sources
A Complete System of Wireless Power Transfer Using a Circularly Polarized Retrodirective Array [PDF]
Journal of Electromagnetic Engineering and Science, 2020 A complete system of wireless power transfer using a circularly polarized retrodirective array is presented. A dual frequency, active retrodirective array is proposed for a transmitter system.
Mohammad Fairouz, Mohammad A. Saed
doaj +2 more sources
Fano Resonance Based Multiple Angle Retrodirective Metasuface
, 2020 EuCAP'20, 14th European Conference on Antennas and Propagation, Copenhague, Danemark, 15-/03/2020 - 20/03/2020A Fano resonance based multi-angle retrodirective metasurface is introduced.
Divitha Seetharamdoo
exaly +2 more sources
Full-Duplex Wideband Digital Array With Beamforming and Application to Sum/Difference Pattern Retrodirectivity [PDF]
IEEE Transactions on Antennas and PropagationA fully digital antenna array is developed and experimentally tested for beamforming, null generation, and in-band full duplex (IBFD) retro-directive beam-steering.
Maksim Kuznetcov, Symon K Podilchak
exaly +2 more sources
Retrodirective Large Antenna Energy Beamforming in Backscatter Multi-User Networks
IEEE Wireless Communications Letters, 2018 In this letter, we study a new technique for energy beamforming (EB) in multi-user networks, which combines large antenna retrodirectivity at the transmitter side with signal backscattering at the energy receivers.
Ioannis Krikidis
exaly +2 more sources
Noise-correlating radar based on retrodirective antennas
IEEE Transactions on Aerospace and Electronic Systems, 2007 A new retrodirective antenna-based search radar system has been introduced. The suggested system uses a noise correlation technique to detect the presence and the direction of the target. Simulation and analytical results show an order of magnitude improvement in acquisition time of the radar when compared with a phased array antenna-based radar system
Woolard, Dwight +4 more
openaire +2 more sources
Possibilities to use retrodirective antennas in radar systems [PDF]
Vojnotehnički Glasnik, 2012 Possibilities to use retrodirective antennas in modern radar systems are presented in this paper. The basics of retrodirective theory, practical realizations of retrodirective arrays using corner reflectors, Van-Atta and heterodyne elements are ...
Aleksandar M. Pavić, Veljko Z. Nikolić
doaj +1 more source
SATCOM Retrodirective Array [PDF]
IEEE Transactions on Microwave Theory and Techniques, 2016 We present an in-depth look at the challenges involved in using analog retrodirective arrays for satellite communications (SATCOM). The main technical issues surrounding the development of a retrodirective (self-steering) SATCOM system are given and techniques for mitigating these issues are provided.
Buchanan, Neil B +2 more
openaire +3 more sources
Development in ambient backscatter communications
IET Microwaves, Antennas &Propagation, Volume 17, Issue 13, Page 963-973, October 2023., 2023 In this paper, we conduct an up‐to‐date review of one branch of BackCom systems, namely Ambient BackCom, which utilises the already available ambient signals, instead of a dedicated radio frequency (RF) carrier in most of the BackCom works, to establish BackCom links.
Shujuan Chang, Yuan Ding
wiley +1 more source
The EUV Reflectance of Mercury's Surface Measured by BepiColombo/PHEBUS
Journal of Geophysical Research: Planets, Volume 128, Issue 3, March 2023., 2023 Abstract On 9 and 10 October 2021, Probing the Hermean Exosphere by Ultraviolet Spectroscopy aboard BepiColombo observed the disk‐integrated reflected light from the Sun by Mercury in the spectral range 90–160 nm at a phase angle of 70°. These observations are used to derive the EUV reflectance of the surface of Mercury in this wavelength range for the
J.‐Y. Chaufray +12 more
wiley +1 more source