Results 81 to 90 of about 1,257 (220)
Rotated infrared antenna transmitarray for the manipulation of circularly polarized wavefronts
EPJ Applied Metamaterials, 2014 An IR optical transmitarray is presented based on Antenna Array Sheet (AAS) for the manipulation of circularly polarized light. The unit cell of the transmitarray comprises three layers of metallic elliptical patches.
He Yuchu, Eleftheriades George V.
doaj +1 more source
Evaluation of glass welding by ultrashort pulse laser [PDF]
, 2008 It is considered that fusion welding should be the most promising technique in glass joining, since joining can be accomplished without any intermediated layer and mechanical contact.
Mohid, Zazuli
core
Electronically reconfigurable reflective phase shifter for circularly polarized reflectarray systems [PDF]
, 2016 This letter presents the design of a two-port electronically reconfigurable phase shifter for circularly polarized reflectarray systems at microwave frequencies. The phase shifter is based on 3 dB/90?
Fernández González, José Manuel +4 more
core +2 more sources
Diseño, simulación y prototipado de un transmitarray reconfigurable en banda Ku [PDF]
, 2008 The aim of this paper is to introduce some theory as well as prototype results of a Ku-band active transmitarray. Its architecture is based in two bi-dimensional radio interfaces interconected by a multiport microwave circuit.
Muñoz Acevedo, Alfonso +2 more
core
Evolution and Move toward Fifth-Generation Antenna [PDF]
, 2018 With the introduction of various antennas in the field of antenna technology, most of the constraints related to the transmission and receiving of the signals at different intervals have been resolved.
Karamirad, Mohsen +2 more
core +2 more sources
International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.The radiation pattern of the broadband metasurface (MTS) antenna often has large sidelobe and large H‐plane cross‐polarization (cross‐pol) at high frequencies because both the fundamental mode and the higher order modes (HOMs) have large sidelobe at these frequencies. However, as for the above two reasons that leading to deterioration of high‐frequency
Liu Hailong +8 more
wiley +1 more source
Pengaruh kualiti cd mata pelajaran lukisan terbantu komputer dengan menggunakan perakam skrin camtasia studio terhadap motivasi, kefahaman dan pencapaian pelajar [PDF]
, 2007 Multimedi a interakti f tela h memperoleh i perhatia n yan g tingg i dala m bidan g pengajara n da n pembelajaran . Medi a interakti f sepert i C D yan g berkualit i dapa t membuk a peluan g untu k pembelajara n pelaja r yan g akti f da n membant u ...
Tan, Wei Sin
core
A Compact Ultralow‐Profile Wideband and High‐Efficiency Folded Transmitarray
International Journal of RF and Microwave Computer-Aided Engineering, Volume 2025, Issue 1, 2025.A compact ultralow‐profile wideband and high‐efficiency folded transmitarray antenna (FTA) is proposed in this letter. It consists of three parts: a top transmission surface (TS), a bottom reflection surface (RS), and an embedded compact planar feed. Using the principle of ray tracing and introducing additional phase compensation in the RS, the antenna
Meizi Wu, Lu Guo, Matteo Bruno Lodi
wiley +1 more source
A reconfigurable transmitarray unit cell employing liquid metal
IET Microwaves, Antennas &Propagation, Volume 18, Issue 12, Page 985-991, December 2024.In this paper, a reconfigurable transmitarray unit cell using liquid metal is presented. It consists of three conducting layers where the geometries of the resonators, on the different layers, differ and consist of an arrow shape together with rotated split rings. It is the first time that a transmitarray unit cell, reconfigured employing liquid metal,
Zhishu Qu +5 more
wiley +1 more source
IEEE AccessThis study introduces a high-accuracy beam pattern synthesis technique using comprehensive unit cell and near-field measurement environment modeling for a miniaturized $8\times 8$ transmitarray antenna with a unit cell period of $0.4\lambda _{0 ...
Myeongha Hwang +4 more
doaj +1 more source