Results 101 to 110 of about 2,996 (222)

Wideband Reflectarray Antennas in the Microwave Range

Известия высших учебных заведений России: Радиоэлектроника
Introduction. The development of broadband reflectarray antennas for the microwave band remains a key challenge in the context of stricter requirements imposed on telecommunications systems, including 5G/6G networks and satellite communications.
L. М. Liubina, S. V. Ballandovich, G. A. Kostikov, Yu. G. Antonov   +3 more
doaj   +1 more source

Direct Synthesis of Dual-Parameter Concentric Ring RA with Enhanced Bandwidth

International Journal of Antennas and Propagation, 2012
Reflectarray antennas (RAs) are nowadays a quite popular technology, used in several applications, due to a significant number of attractive properties, such as low cost, low weight, conformal deployment, and the possibility of introducing suitable ...
Bui Van Ha, Paola Pirinoli, Riccardo E. Zich, Marco Mussetta   +3 more
doaj   +1 more source

Reflectarray antennas: a smart solution for new generation satellite mega-constellations in space communications. [PDF]

Sci Rep, 2020
Imaz-Lueje B, Prado DR, Arrebola M, Pino MR.   +3 more
europepmc   +1 more source

Reflectarray antennas for terahertz communications

, 2012
Reflectarrays composed of resonant microstrip gold patches on a dielectric substrate are demonstrated for operation at terahertz frequencies. Based on the relation between the patch size and the reflection phase, a progressive phase distribution is implemented on the patch array to create a reflector able to deflect an incident beam towards a ...
Niu, Tiaoming, Withayachumnankul, Withawat, Ung, Benjamin S. -Y., Menekse, Hakan, Bhaskaran, Madhu, Sriram, Sharath, Fumeaux, Christophe   +6 more
openaire   +2 more sources

Millimetre wave reflectarray antenna unit cell measurements

Loughborough Antennas & Propagation Conference (LAPC 2017), 2017
Reflectarray antennas are a potential candidate solution to realize high gains at millimetre waves (mm-waves). A reflectarray contains a large number of spatially illuminated unit cells. The performance of a good reflectarray design is manifested by the behaviour of its comprising unit cells.
Ahmad, Ghulam, Brown, Tim, Underwood, Craig, Loh, TH   +3 more
openaire   +3 more sources

Circularly Polarized Folded Reflectarray Antenna With Improved Aperture Efficiency

IEEE Open Journal of Antennas and Propagation
This paper presents a method for improving the aperture efficiency of circularly polarized folded reflectarray (CPFRA) antennas. The reflection-phase distribution of the circular polarization selective surface (CPSS) constituting the CPFRA antenna is ...
Makoto Sano
doaj   +1 more source

A Printed Reflectarray with Annular Patches [PDF]

, 2007
Dassano, Gianluca, Orefice, Mario, Pirinoli, Paola, Vietti Colome, G.C.   +3 more
core   +1 more source

94 GHz Beam Scanning Dual-Reflector Antenna with a Sub-Reflectarray [PDF]

, 2008
A Cassegrain dual-reflector antenna which employs a flat reflectarray subreflector was analysed in a recent paper [1]. It was shown that the antenna beam can be scanned by introducing an appropriate progressive phase distribution across the reflectarray ...
Arrebola, Manuel, Cahill, R., Encinar Garcinuño, José Antonio, Fusco, V., Gamble, H., Grant, N., Hu, Wenfei   +6 more
core  

Arbitrary beam control using passive lossless metasurfaces enabled by orthogonally-polarized custom surface waves

, 2018
For passive, lossless impenetrable metasurfaces, a design technique for arbitrary beam control of receiving, guiding, and launching is presented. Arbitrary control is enabled by a custom surface wave in an orthogonal polarization such that its addition ...
Kwon, Do-Hoon, Tretyakov, Sergei A.
core   +1 more source

Design of Wideband Reflectarray and Transmitarray Antennas With Low Sidelobe and Cross-Polarization Levels Using a Multifunctional Ultrathin Metasurface

IEEE Open Journal of Antennas and Propagation
Ensuring a low cross-polarization level (CPL) is imperative in the design of antennas with a low sidelobe level (SLL). This paper introduces an innovative approach for designing wideband, high-gain, low-sidelobe, and low-cross-polarization reflectarray ...
Yufang Wang, Yuehe Ge, Zhizhang Chen, Ziheng Zhou   +3 more
doaj   +1 more source