Results 81 to 90 of about 911 (207)

Charge‐Programmable Photopolymers for 3D Electronics via Additive Manufacturing

Advanced Functional Materials, Volume 34, Issue 18, May 2, 2024.
Charge‐programmed 3D printing fabricates 3D electronics with reduced weight and high precision. Photo‐curable resins are designed for exploring the achievable materials property space. Charge and crosslink densities synergistically impact the nano catalyst‐guided selective metal deposition on compatible dielectric materials.
Zhen Wang, Junbo Wang, Zhenpeng Xu, Ryan Hensleigh, Haotian Lu, Mack Sowers, Marcus A. Worsley, Yahya Rahmat‐Samii, Xiaoyu (Rayne) Zheng   +8 more
wiley   +1 more source

Application of Social Network Optimization to shaped beam Transmitarray Antennas

, 2018
In recent years, Transmitarray Antennas (TA) have became interesting alternatives to other type of high-gain antennas, especially for their flexibility, that make possible to obtain radiation patterns with different features just changing the TA unit ...
Beccaria M., Niccolai A., Pirinoli P., Zich R.   +3 more
core   +2 more sources

Phase change material based reconfigurable transmitarray: a feasibility study

, 2022
International audienceIn this paper, we present the design of a reconfigurable transmitarray operating in the D-band (110-170 GHz). The transmitarray unit cell has a relatively simple structure with three metal layers and two quartz dielectric substrates.
Milbrandt, Jorick, Clemente, Antonio, Gharbieh, Samara, Reig, Bruno   +3 more
core  

Contribution to the analysis and design of transmitarray lenses = Contribución al análisis de lentes tipo transmitarray

, 2022
This Doctoral Thesis, entitled ‘Contribution to the Analysis and Design of Transmitarray Lenses’ aims to be continuation of the research line in antennas and radiating devices, with special interest in the area of reconfigurable antennas, in the Radiation Group (Grupo de Radiaci´on, GR) of the department of Signals, Systems and Radiocommunications (Se ...
openaire   +2 more sources

A W-Band Multi-Feed Low-Profile Transmitarray Antenna Using Orthogonal Slot Element

IEEE Open Journal of Antennas and Propagation
This 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, Zhixin Qiu, Qing-Yi Guo, Longyue Qu   +3 more
doaj   +1 more source

A High-Gain Transmitarray for Generating Dual-Mode OAM Beams

IEEE Access, 2018
This paper proposes a novel transmitarray antenna which can achieve high gain and produce dual-mode orbital angular momentum (OAM) beams in Ku-band. Two back-to-back wideband dual-polarized microstrip antennas are employed as the unit cells, which are ...
Fan Qin, Steven Gao, Wen-Chi Cheng, Yi Liu, Hai-Lin Zhang, Gao Wei   +5 more
doaj   +1 more source

Sub-THz Polarization-Dependent Beam-Steerable Metasurface Antenna-in-Package for 6G Communication Constructed Using an LTCC Process [PDF]

Journal of Electromagnetic Engineering and Science
In this paper, a polarization-dependent beam-steerable metasurface lens that is integrated with an antenna-in-package (AiP) using a single low-temperature co-fired ceramic (LTCC) process is proposed for sub-terahertz applications.
Seongwoog Oh, Yeongmyeong Park, Jungsuek Oh   +2 more
doaj   +1 more source

Wideband and High-Efficiency Circularly Polarized Unit-Cell for X and Ka-Band Transmitarrays

IEEE Open Journal of Antennas and Propagation
This paper presents a novel approach for linear to circular polarization (LP-CP) conversion in transmitarray antennas. The proposed conversion mechanism differs significantly from previous published realizations.
Alessandro de Oliveira Cabral Junior, Hamza Kaouach, Andre Barka   +2 more
doaj   +1 more source

Design and Implementation of an X-Band 1-Bit Reconfigurable Transmitarray System with a Space-Time Coding Scheme [PDF]

Journal of Electromagnetic Engineering and Science
This paper proposes a 1-bit reconfigurable transmitarray system operating in the X-band that is capable of implementing a space-time coding scheme. The proposed transmitarray consists of a 10×10 array of unit cells, each exhibiting high transmission ...
Sung-Geon Kim, Inhwan Kim, Youngjae Yu, Ic-Pyo Hong, Kyung-Won Lee, Sunghun Jung, Myung-Sik Lee, Jong-Gwan Yook   +7 more
doaj   +1 more source

Measurements and Modelling of Spatial Diversity using 2D Transmitarray

, 2018
This paper disseminates the results of the first experimental trials on Spatial Diversity (SD) with beamsteering capabilities by the means of 2D transmitarray and thus reduced RF chains.
Caldeirinha, Rafael, Hammoudeh, Akram, Copner, Nigel, Reis, Joao R.   +3 more
core   +1 more source