Results 51 to 60 of about 533,528 (216)
Application of transmitarray antennas for indoor mapping at millimeter-waves
2015 European Conference on Networks and Communications (EuCNC), 2015 Millimeter-waves are expected to play a key role in next 5G scenario due to the availability of a large clean unlicensed bandwidth at 60 GHz and the possibility to realize packed antenna arrays, with a consequent increase of the communication capacity and the introduction of new functionalities, such as high-definition localization and personal radar ...
Anna Guerra +5 more
openaire +2 more sources
Advanced Electronic Materials, Volume 11, Issue 3, March 2025.Subarray technology enables high‐performance limited field of view (LFOV) phased arrays, but these are necessarily complex with numerous phase shifters and other electronic components. A metalens is now introduced, which achieves excellent LFOV performance without the complexity of traditional designs.
J. Daniel Binion +4 more
wiley +1 more source
An FSS-Backed Reflection/Transmission Reconfigurable Array Antenna
IEEE Access, 2020 Reflectarray and transmitarray antennas have been widely used in radar detection systems and satellite communications. Simultaneous realization of reflection and transmission of electromagnetic waves under the same antenna aperture will undoubtedly save ...
Wentao Li +3 more
doaj +1 more source
60-GHz Double-Layer Transmitarray Antenna Using Complementary Structure
Frontiers in Physics, 2022 —A novel double-layer transmitarray element is presented at 60 GHz with linearly- and circularly-polarized characteristics. A planar frequency-selective structure using the complementary design is adopted to augment the element performance for millimeter-
Wenxing An +4 more
doaj +1 more source
Single‐Layer Reflectarray Providing Broadband Linear‐to‐Circular Polarization Conversion
Microwave and Optical Technology Letters, Volume 67, Issue 2, February 2025.ABSTRACT This paper introduces a single‐layer reflectarray (RA) design capable of converting incoming linearly polarized waves into outgoing circularly polarized ones while focusing the beam. The design employs nonresonant unit cells, extending the classical concept of meander‐line polarizers.
Samara Gharbieh +4 more
wiley +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
An Extremely Low‐Profile Electronically Reconfigurable 1‐D X‐Band Leaky‐Wave Antenna
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.A 1‐bit electronically tunable 1‐D leaky‐wave antenna is proposed in this work. The theoretical basis of the proposed structure is first evaluated using the array factor and the concept is experimentally confirmed using a 21‐element prototype. ABSTRACT In this work, a simple analytical model based on the array factor to effect 1‐bit electronic ...
Kevin Kipruto Mutai +2 more
wiley +1 more source
Fully Controllable Beam‐Steering 1‐THz Transmitarray Using Graphene–Metal Hybrid Metasurface
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.The switchable hybrid graphene–metal transmiting metasurface. The transmitarray composed of the proposed metasurface, for beam steering, controlable by a microprocessing unit. ABSTRACT In this paper, a 1‐THz graphene–metal‐hybrid transmissive metasurface is proposed, which consists of six layers.
P. Hosseini, H. Oraizi
wiley +1 more source
Mechanically Reconfigurable, Beam-Scanning Reflectarray and Transmitarray Antennas: A Review
Applied Sciences, 2021 We review mechanically reconfigurable reflectarray (RA) and transmitarray (TA) antennas. We categorize the proposed approaches into three major groups followed by a hybrid category that is made up of a combination of the three major approaches.
Mirhamed Mirmozafari +6 more
doaj +1 more source
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