Results 71 to 80 of about 1,257 (220)
A Systematic Approach for Determining Transmitarray Specifications in Near‐Field Scenarios
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.This paper presents a design methodology of transmitarrays for near‐field wavefront shaping. Unlike conventional methods that rely on trial and error or optimisation procedures, this approach establishes practical relationships to determine transmitarray specifications.
Sara Moinzad +2 more
wiley +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
Multibeam Transmitarrays for 5G Antenna Systems
2018 IEEE Seventh International Conference on Communications and Electronics (ICCE), 2018 In this paper, preliminary results on the feasibility of a multibeam antenna based on the use of a transmitarray are presented. A reduced size configuration has been properly designed and optimized, with the aim to minimize the degradation of the radiation pattern introduced by the variation in the direction of maximum radiation.
Michele Beccaria +3 more
openaire +2 more sources
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
ICT Express, 2021 A low-profile high efficiency transmitarray antenna (TA) using an optimized phase compensation surface (PCS) and PEC sidewalls is proposed in this paper.
Jeong-Hyun Park, Jae-Gon Lee
doaj +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
doaj +1 more source
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