Results 71 to 80 of about 3,272 (195)
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
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
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
Beam-Steerable Passive Transmitarray Optimized Based on an Adjacent Algorithm
IEEE Access, 2021 This paper presents a novel adjacent algorithm for the design of a beam-steerable passive transmitarray (TA) antenna. Even if the beam of a feed antenna is steering by varying the phase offset of the antenna array forming the feed antenna, the existing ...
Euiho Shin, Jungseuk Oh
doaj +1 more source
Analog Computing Using Graphene-based Metalines
, 2015 We introduce the new concept of "metalines" for manipulating the amplitude and phase profile of an incident wave locally and independently. Thanks to the highly confined graphene plasmons, a transmit-array of graphene-based metalines is used to realize ...
AbdollahRamezani, Sajjad +3 more
core +1 more source
Dual-Polarized Dual-Frequency Ka-band Transmitarray Lens [PDF]
, 2020 European Conference on Antennas and Propagation (EuCAP) (14th. Copenhagen, Denmark. 2020)This work was supported in part by the Ministerio de Ciencia, Innovación y Universidades, under project TEC2017-86619-R (ARTEINE) and Conserjería de Empleo ...
González Plaza, Enrique +3 more
core +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 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
Reverse polarized inductive coupling to transmit and receive radiofrequency coil arrays [PDF]
, 2011 Cataloged from PDF version of article.In this study, the reverse polarization method is implemented using transmit and receive arrays to improve the visibility of the interventional devices.
Atalar, E., Celik, H.
core +1 more source
A Wideband Multibeam Transmitarray Antenna Based on 3‐D FSS
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.This paper presents a novel method for designing a wideband dual‐polarised multibeam transmitarray antenna. Through numerical calculations, simulations and measurements, the TA demonstrates outstanding multibeam radiation characteristics. ABSTRACT This paper presents a novel method for designing a wideband dual‐polarised multibeam transmitarray antenna.
Longfei Wang +4 more
wiley +1 more source