Results 71 to 80 of about 911 (207)
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
Metal-Only Transmitarray Based on C-Shaped Slot
, 2018 International audienceThis paper presents a novel design of metal-only transmitarray using unit-cells based on C-shaped slots. The unit-cell consists of four identical layers separated by a quarter-wavelength spacer at 20 GHz (3.75 mm).
Diaby, Fatimata +11 more
core +1 more source
Reconfigurable Transmitarray Antennas
, 2012 Transmitarrays have been shown to be viable architectures for achieving high-directivity reconfigurable apertures. The existing work on reconfigurable transmitarrays is sparse, with only a few experimental demonstrations of reconfigurable implementations.
Lau, Jonathan Yun
core +2 more sources
Preliminary results on Conformal Transmitarray Antennas
, 2018 In this communication some results of a preliminary study on Conformal Transmitarray Antennas (CTAs) are presented. In particular, the peculiarities of such a configuration are reported, and the radiation features of a small-medium size structure are ...
Paola Pirinoli +5 more
core +1 more source
A 28 dBm-EIRP low-profile D-band transmitting module with a folded transmitarray antenna
, 2023 International audienceThis work presents the design and characterization of a high-gain transmitting module including a two-channel 45-nm CMOS transmitter and a folded transmitarray antenna.
Clemente, Antonio +4 more
core +1 more source
Passive Microstrip Transmitarray Lens for Ku Band
, 2010 The aim of this paper is to introduce a novel 12 GHz radiating design based on the idea of transmitarray lens device. In this document, an overview of the functioning of this kind of devices is given and the proposed transmitarray lens is studied, with ...
Muñoz Acevedo, Alfonso +2 more
core +1 more source
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
Investigation of microwave power transfer near sea surface with 2D parabolic equation method
IET Power Electronics, Volume 17, Issue 15, Page 2278-2287, 25 November 2024.Due to the existence of the evaporation duct near‐sea‐surface described as an inhomogeneous refractive index of the atmosphere, microwaves can be trapped in the duct and propagate along it. To investigate wireless power transfer over the sea surface, we utilize the two‐dimensional parabolic equation to calculate the electric field distribution and to ...
Jinyi Hui +4 more
wiley +1 more source
Critical Analysis Of Transmitarray Antenna Design
, 2014 In recent years, transmitarray antenna concept attracts growing interests of many scientists in the antenna area. It combines the favorable features of the lens antenna that are based on optical theory and the microstrip arrays that are based on array ...
Abdelrahman, Ahmed H.
core +1 more source
IEEE Access, 2020 This paper describes a wideband, low-profile and efficiency-improved transmitarray antenna achieved by employing over-1-bit phase-shifting elements and incorporating optimized phase compensation scheme.
Fan Wu +3 more
doaj +1 more source