Results 11 to 20 of about 4,264 (215)
Dual-Polarization Ku-Band Compact Spaceborne Antenna Based on Dual-Reflectarray Optics [PDF]
Sensors, 2018 This article demonstrated an accurate analysis technique for dual-reflectarray antennas that take into account the angle of incidence of the impinging electric field on the main reflectarray cells. The reflected field on the sub and the main reflectarray
Carolina Tienda +3 more
doaj +2 more sources
Tunable Reflectarray Cell for Wide Angle Beam-Steering Radar Applications [PDF]
Journal of Electrical and Computer Engineering, 2013 An electronically tunable reflectarray element is proposed in this work to design beam-steering antennas useful for radar applications. A reduced size reflectarray unit cell is properly synthesized in order to extend the antenna beam scanning ...
F. Venneri, S. Costanzo, G. Di Massa
doaj +2 more sources
Three‐dimensional printed millimetre wave dielectric resonator reflectarray [PDF]
, 2017 Reflectarray antennas have attracted extensive attention due to their low loss, high gain, compact volume, and their excellent abilities to control the radiated beam.
Shiyu Zhang (1222824), Shiyu Zhang
core +4 more sources
Decoupling Backward Scattering Control and Forward Beamformed Communication in a Shared‐Aperture Retro‐Reflective/Transmissive Metasurface [PDF]
NanophotonicsConceptual illustration of the retro‐reflective and transmissive metasurface (RRTM). The blue radar establishes communication with the UAV via the transmissive mode, whereas the purple surveillance radar acquires the status of friendly units through the retro‐reflective mode and the two modes operate simultaneously within the same decoupled aperture ...
Zhang S +8 more
europepmc +2 more sources
IEEE Access, 2021 Membrane reflectarray antennas with flexible support structures realize low weight and low stowage volume. However, deformation of the reflectarray membrane generally degrades antenna gain. We propose electrical misalignment compensation for 5.8-GHz-band
Keisuke Omoto +2 more
doaj +1 more source
IEEE Access, 2020 In this paper, a tightly coupled dipole reflectarray antenna as well as a variant-coupling-capacitance method to improve the antenna aperture efficiency is presented.
Jiayou Wang +3 more
doaj +1 more source
Millimeter-Wave Metal Reflectarray Antennas with Sub-Wavelength Holes
, 2021 Reflectarray antennas composed of rectangular grooves with sub-wavelength holes on a metal plate are designed for millimeter-wave regions. All depths of multiple grooves in the metal reflectarray are elaborately manipulated for a high-gain reflector.
Sungjun Yoo, Minwoo Yi, Youngseok Bae
core +1 more source
3D-printed millimetre wave dielectric resonator reflectarray
, 2017 Reflectarray antennas have attracted extensive attention due to their low loss, high gain, compact volume and their excellent abilities to control the radiated beam.
Shiyu Zhang (1222824)
core +3 more sources
Radiation Analysis and Characteristics of Conformal Reflectarray Antennas
International Journal of Antennas and Propagation, 2012 This paper investigates the feasibility of designing reflectarray antennas on conformal surfaces. A generalized analysis approach is presented that can be applied to compute the radiation performance of conformal reflectarray antennas.
Payam Nayeri +2 more
doaj +1 more source
Enhanced Efficiency and Reduced Side Lobe Level Convex Conformal Reflectarray
Applied Sciences, 2021 In this work, the design of a convex conformal reflectarray (CRA), suitable to be used for high gain on board antenna in mobile communication systems, is presented.
Michele Beccaria +7 more
doaj +1 more source