Results 111 to 120 of about 10,722 (267)
Electronics Letters, 1998 A novel folded reflectarray antenna is presented. This antenna combines a twist and focusing reflector concept in a single printed structure. Together with a printed grid, a low profile and high gain antenna results. A test antenna in the 20 GHz range was designed, fabricated and tested.
D. Pilz, W. Menzel
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An optical reflectarray nanoantenna: The concept and design
Optics Express, 2009 This paper presents the concept and design of a reflectarray nanoantenna at optical frequencies whose elements are nano-sized concentric spherical particles with the core made of ordinary dielectrics and the shell made of a plasmonic material. Modeling approaches based on finite difference time domain (FDTD) numerical method and dipole-modes scattering
Akram, Ahmadi +2 more
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Diseño construcción y medida de un reflectarray para antena terminal en banda KA [PDF]
, 2008 This contribution describes the design, manufacturing and test of a printed reflectarray for a Ka-band terminal antenna. The reflectarray has been designed to produce a focused beam at 30 GHz (uplink) in V polarisation and also at 20 GHz (downlink) in H ...
Barba Gea, Mariano +1 more
core
Bandwidth enhancement of aperture-coupled reflectarrays
Electronics Letters, 2006 An aperture-coupled reflectarray element with a reduced inter-element spacing is proposed. Bandwidth improvements are demonstrated by a smooth and similar behaviour of the phase design curves when properly decreasing the unit cell size. Experimental validations are reported for the measured radiation patterns of two reflectarray propotypes with ...
COSTANZO, Sandra +2 more
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A Ka-Band High-Efficiency Transparent Reflectarray Antenna Integrated With Solar Cells
IEEE Access, 2018 A transparent reflectarray antenna integrated with solar cells is presented for satellite communications in the paper. The electromagnetic characteristics of solar cells at Ka-band are investigated, and a sub-wavelength X-shaped dipole element is ...
Wenxing An +5 more
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Estudio de reflectarray multihaz para aplicaciones de satélite en banda Ka utilizando discriminación en frecuencia [PDF]
, 2016 This contribution describes a design concept based on beam squint effect in printed reflectarrays that allows to produce multiple contiguous beams at 19.5 and 20 GHz, by discriminating in frequency.
Encinar Garcinuño, José Antonio +2 more
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Reflectarray para Estación Base LMDS Basado en Parches Acoplados por Apertura [PDF]
, 2008 A shaped-beam reflectarray based on aperturecoupled elements is demonstrated as central station antenna for Local Multipoint Distribution System (LMDS) in the 10.10- 10.70 GHz band.
Arrebola, Manuel +3 more
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A Reconfigurable Reflectarray Structure Based on Metamaterial Unit Cells for 5G Applications
Journal of Studies in Science and EngineeringThis article presents the design and analysis of the reconfigurable reflectarray structure based on metamaterials for Sub-6 GHz 5G applications. The proposed reflectarray structure is printed on a 1 mm-thick FR4 dielectric substrate with a total size of ...
Reham Mahood Yaseen, Ali Khalid Jassim
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What is brand? Some insights in the historical development [PDF]
, 2018 The aim of this study is to enhance understanding in the philosophy of the brand along with its historical development around the world. Its main purpose is to clarify the nature of the brand, its origination, ancient phase, digital phase and the future ...
Ismail, Fadillah +3 more
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Inverse Design of a Wide-Angle Wideband Programmable THz Reflectarray Through Generative Adversarial Networks [PDF]
International Journal of Information and Communication Technology ResearchA reflectarray optimized through a Generative Adversarial Network (GAN) is demonstrated. This design focuses on the impact of the top layer on the reflection phase and utilizes the correlation between phase distribution and the direction of the reflected
Pezhman Yousefi +3 more
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