Concept
Active electronically scanned array
Related publications (96)
Electromagnetic inspired acoustic leaky-wave antenna
Juan Ramon Mosig, Hervé Lissek, Sami Driss Karkar, Seyyed Hussein Seyyed Esfahlani
In this article we make an analogy between Electromagnetic and Acoustic transmission-line modelling. Then we use this to introduce acoustic transmission-line metamaterials and finally we introduce the acoustic leaky-wave antenna on the basis of previous st ...
IEEE2016Tx-Rx Lens-Based Satellite-on-the-Move Ka-Band Antenna
Juan Ramon Mosig, Joana Rita Alves dos Santos Silva
A simple low-cost mobile ground terminal antenna for Ka-band satellite communications is presented. The antenna is composed of a shaped dielectric lens which tilts and rotates in front of a feed to direct the beam. The wideband feed system is composed of a ...
Institute of Electrical and Electronics Engineers2015A Novel Bridge Section Model Endowed with Actively Controlled Flap Arrays Mitigating Wind Impact
Alcherio Martinoli, Klara Maria Boberg, Glauco Feltrin
In this work, we present the SmartBridge, a novel bridge section model equipped with actively controlled arrays of flaps aiming at mitigating wind-induced vibrations of long-span bridges. The active model, as well as its support structure, is described in ...
2015Multi-band reflectarray antennas in Ku and THz frequency bands
Printed reflectarrays are low-cost, low-profile high gain antennas demonstrating distinctive advantages over conventional parabolic reflectors and phased-arrays. The flat, low weight reflecting surface of a reflectarray makes it an attractive alternative w ...
EPFL2015Unidirectional Cloaking Based on Metasurfaces with Balanced Loss and Gain
We prove that balanced loss-gain distributions provide an elegant path towards realizing loss-free unidirectional cloaks for objects much larger than the wavelength. By coating a scatterer with an ultrathin metasurface with balanced loss and gain, such as ...
2015Extension of ultrasound Fourier slice Imaging theory to sectorial acquisition
Jean-Philippe Thiran, Rafael Eduardo Carrillo Rangel, Adrien Georges Jean Besson, Olivier Bernard
Ultrasound image reconstruction from the echoes received by an ultrasound probe after the transmission of diverging waves is an active area of research because of its capacity to insonify at ultra-high frame rate with large regions of interest using small ...
2015The ITPA disruption database
A multi-device database of disruption characteristics has been developed under the auspices of the International Tokamak Physics Activity magneto-hydrodynamics topical group. The purpose of this ITPA disruption database (IDDB) is to find the commonalities ...
Iop Publishing Ltd2015Neel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV4S8
Henrik Moodysson Rønnow, Jonathan White
Following the early prediction of the skyrmion lattice (SkL)-a periodic array of spin vortices-it has been observed recently in various magnetic crystals mostly with chiral structure. Although non-chiral but polar crystals with C-nv symmetry were identifie ...
Nature Publishing Group2015Array-Fed Partially Reflective Surface Antenna With Independent Scanning and Beamwidth Dynamic Control
Julien Perruisseau-Carrier, Tomislav Debogovic
In this communication we present a concept of a partially reflective surface (PRS) antenna capable of independent beam-scanning and beamwidth dynamic control. The beamwidth is controlled by reconfiguring the PRS reflectivity via embedded varactor diodes, w ...
Institute of Electrical and Electronics Engineers2014