Results 31 to 40 of about 9,058 (257)
BANDWIDTH CONSIDERATIONS FOR A MICROSTRIP REFLECTARRAY [PDF]
Progress In Electromagnetics Research B, 2008 The paper describes a theoretical investigation into a limited bandwidth operation of a microstrip reflectarray. Two main factors limiting the bandwidth are considered. One is related to the requirement of phase compensation to convert a spherical wavefront launched by a feed into a planar wavefront. The other one is linked to the limited phasing range
Bialkowski, M.E., Sayidmarie, K.H.
openaire +4 more sources
New Phase Realization Approach for Implementation of Braodband Reflectarrays
International Journal of Information and Communication Technology Research, 2021 We present a new phase realization approach applied to design the broadband single-layer reflectarray antennas. Such an optimization technique minimizes the adverse effects of frequency dispersion which limit the bandwidth of reflectarray antenna ...
Mahmood Rafaei-Booket +1 more
doaj
Dual-Polarization Ku-Band Compact Spaceborne Antenna Based on Dual-Reflectarray Optics
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 +1 more source
A Low Profile Planar Dual-Polarized Tightly Coupled Dipole Reflectarray With 5:1 Bandwidth
IEEE Open Journal of Antennas and Propagation, 2022 This work introduces an extremely low profile ( $0.4\lambda _{high}$ ) planar ultra-wideband dual-polarized reflectarray. The unit-cell structure of the array is modular in nature, and without any electrical connection between adjacent unit-cells.
Muhammad Hamza +2 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
Wideband 3-D-Printed Metal-Only Reflectarray for Controlling Orthogonal Linear Polarizations
IEEE Transactions on Antennas and Propagation, 2023 This article presents a metal-only reflectarray that enables the control of incident orthogonal polarizations in a large bandwidth. The proposed reflectarray is based on a unit cell whose tuning elements allow the independent control of the reflection ...
Á. Palomares‐Caballero +4 more
semanticscholar +1 more source
Reflectarray antennas for space applications [PDF]
2012 IEEE International Conference on Ultra-Wideband, 2012 In this paper, the advantages and recent developments of reflectarray antennas for space applications are reviewed. Basic requirements for space antennas, and the limitations and challenges of conventional designs are discussed. Various advantages of reflectarray antennas over reflectors and phased array antennas are reviewed and it is shown that ...
Atef Z. Elsherbeni +2 more
openaire +2 more sources
Wideband Reflectarray Using Compact Coupled Element and Rectifying Antenna Combined with Reflectarray [PDF]
, 2011 The reflectarray has been considered as a suitable candidate to replace the conventional parabolic reflectors because of its high-gain, low profile, and beam reconfiguration capability.
Oh, Seong Won
core +1 more source
Approximate Analytical Technique to Design Reflectarray Antenna [PDF]
, 2016 This paper presents an analysis and design for a reflectarray antenna composed of an array of rectangular patches printed on a grounded dielectric slab.
H. M. Yamani +5 more
core +1 more source
IEEE Access, 2020 A gain-enhancement scheme that combines an active integrated antenna (AIA) and an optically transparent reflectarray on solar cells is proposed for CubeSat applications.
Yen-Sheng Chen +2 more
doaj +1 more source