Results 111 to 120 of about 3,272 (195)

ELECTRONICAL LY RECONFIGURABLE FS S - INSPIRED TRANSMITARRAY FOR TWO DIMENS IONAL BEAMSTEERING FOR 5G ANDRADAR APPL ICATIONS AT 2 8 GHZ [PDF]

, 2019
In this dissertation, the author’s work on a 28 GHz transmitarray capable of antenna beamsteering for various wireless applications, is presented. Such device allows for the adjustment of the radiation pattern of an antenna by changing its main lobe ...
Vala, Mário António Patrício Carreira
core  

A Near-Field Focused Lens Based on Multilayer Transmitarray

IEEE Access
Near-field focused antennas are one of the most widely concerned industrialization research studies. Among these application scenarios, the microwave near-field focused lens based on transmitarray is one of the intensively designs, which usually consist ...
Yuying Li, Zhaoran Chen, Yang Li, Xiayuan Yao   +3 more
semanticscholar   +1 more source

Multitask bidirectional digital coding metasurface for independent controls of multiband and full-space electromagnetic waves. [PDF]

Nanophotonics, 2022
Wu LW, Ma HF, Gou Y, Wu RY, Wang ZX, Xiao Q, Cui TJ.   +6 more
europepmc   +1 more source

Design of Wideband Reflectarray and Transmitarray Antennas With Low Sidelobe and Cross-Polarization Levels Using a Multifunctional Ultrathin Metasurface

IEEE Open Journal of Antennas and Propagation
Ensuring a low cross-polarization level (CPL) is imperative in the design of antennas with a low sidelobe level (SLL). This paper introduces an innovative approach for designing wideband, high-gain, low-sidelobe, and low-cross-polarization reflectarray ...
Yufang Wang, Yuehe Ge, Zhizhang Chen, Ziheng Zhou   +3 more
doaj   +1 more source

Fast Transmitarray Synthesis with Far-Field and Near-Field Constraints. [PDF]

Sensors (Basel), 2022
Loredo S, Plaza EG, León G.
europepmc   +1 more source

A S/K/Ka Triple-Band Shared-Aperture Antenna Hybridizing Monopole Array and Transmitarray

IEEE Open Journal of Antennas and Propagation
This paper presents a triple-band shared-aperture antenna operating in the S-, K-, and Ka-bands. The antenna is based on a modified transmitarray antenna (TA) where a $2\times 2$ monopole array (MA) is integrated into its transmitting surface (TS).
Zi Long Ma, Yang Li Geng
doaj   +1 more source

Passive Type Reconfigurable Intelligent Surface: Measurement of Radiation Patterns. [PDF]

Micromachines (Basel), 2023
Rana B, Cho SS, Hong IP.
europepmc   +1 more source

Ultra-light antennas via charge programmed deposition additive manufacturing. [PDF]

Nat Commun
Wang Z, Hensleigh R, Xu Z, Wang J, Park JJ, Papathanasopoulos A, Rahmat-Samii Y, Rayne Zheng X.   +7 more
europepmc   +1 more source

Reconfigurable Meta-Coupler Employing Hybrid Metal-Graphene Metasurfaces. [PDF]

Sci Rep, 2020
Tavakol MR, Khavasi A.
europepmc   +1 more source

Multimode OAM beam generation through 1-bit programmable metasurface antenna. [PDF]

Sci Rep, 2023
Nadi M, Sedighy SH, Cheldavi A.
europepmc   +1 more source