Results 61 to 70 of about 533,528 (216)
Applied Sciences, 2022 This study designed a multi-functional reconfigurable transmitarray with switchable polarization and beam steering capabilities using only a PIN diode having ON/OFF switching ability.
In-Gon Lee, Jong-Yeong Kim, Ic-Pyo Hong
doaj +1 more source
The Design of Broadband Circularly Polarized Multi-beam Antenna with Linearly Polarized Feeding Source and Transmitarray Unit [PDF]
RadioengineeringAmong the existing circularly polarized multi-beam transmitarray antennas, circularly or linearly-to-circularly polarized transmitarray units are always required.
Z. Guo +5 more
doaj
A dual‐layer polarisation rotating element for transmitarray designs
IET Microwaves, Antennas & Propagation, 2023 A transmitarray adopting dual‐layer polarisation rotating (PR) elements is proposed. The element comprises a pair of perpendicularly placed C‐shaped slots etched on the two sides of a single‐layer substrate and orthogonally rotates transmission wave ...
Wei Rao, Yuqing Wang, Lu Guo
doaj +1 more source
Low‐Cost 2‐D Multibeam Transmitarray With Enhanced Beam Coverage Using Sliding Effective Aperture
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.This letter proposes a low‐cost 2‐D multibeam transmitarray (TA) using the method of sliding effective aperture. By sliding the feeding source, the effective aperture slides accordingly. Different sources represent producing different equiphase planes and thus achieving multiple beams.
Mengyuan Wang +6 more
wiley +1 more source
A Compact Phase‐Modulated Transmissive Metasurface Convergence Lens for OAM Antenna
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.The system integrates a compact circular ring phased array antenna (CRPAA) operating in the X‐band to generate OAM beams and an metasurfaces lens designed using an optical converging axicon theory. When placed 60 mm (2λ₀) from the CRPAA, the MS lens significantly reduces the divergence angle of the OAM beam (mode l = −2) from 72° to 30° and increases ...
Min Fan, Wei Liu, Meng Kong, Jie Wu
wiley +1 more source
A W-Band Multi-Feed Low-Profile Transmitarray Antenna Using Orthogonal Slot Element
IEEE Open Journal of Antennas and PropagationThis article presents a low-profile transmitarray using multi-feed technology. The element of the transmitarray adopts two orthogonally arranged slots on the bottom and upper layer of the cavity as received and transmitted structure, and is constructed ...
Guang-Hua Sun +3 more
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A Wideband High‐Efficiency Compact All‐Metal Folded Transmitarray With Integrated Planar Feed
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.A wideband high‐efficiency compact all‐metal folded transmitarray antenna (CAMFTA) with integrated planar feed is proposed in this paper. It consists of a transmission metasurface (TMS) with the function of reflecting y‐polarised wave, as well as transmitting x‐polarised wave and twisting its polarisation by 90°, a linear polarisation conversion ...
Siyi Chen, Haoran Jiang, Lu Guo
wiley +1 more source
A Low-Profile Dual-Polarized Transmitarray with Enhanced Gain and Beam Steering at Ku Band
Applied SciencesA low profile dual polarized transmitarray antenna, made of three identical layers, is proposed in this paper for Ku-band applications. The transmitarray comprises 22 × 22 symmetrical unit cells.
Md. Imran Khan +7 more
doaj +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
Bandwidth Improvement Methods of Transmitarray Antennas
IEEE Transactions on Antennas and Propagation, 2015 Despite several advantages of planar transmitarray antennas compared to conventional lens antennas, they have a narrow bandwidth. The goal of this paper is to improve the bandwidth of transmitarray antennas through the control of the transmission phase range and the optimization of the phase distribution on the transmitarray aperture.
Ahmed H. Abdelrahman +3 more
openaire +1 more source