Results 61 to 70 of about 3,242 (300)

A high‐power, high‐isolation, dual‐polarised planar phased array antenna

IET Microwaves, Antennas & Propagation
A high‐power, high‐isolation, dual‐polarised planar phased array antenna is presented. Based on a multi‐layer microstrip structure, two sets of polarisation ports are fed through orthogonal slot coupling, achieving high isolation and low cross ...
Junxing Jiang, Shaoqiu Xiao, Yiming Zhang, Shaoyi Xie   +3 more
doaj   +1 more source

A low sidelobe 77 GHz centre‐fed microstrip patch array antenna

IET Microwaves, Antennas & Propagation, 2023
A low sidelobe 77 GHz centre‐fed microstrip patch array antenna is proposed for automotive radar application. The proposed antenna comprises eight linear antenna arrays, each of which is centre‐fed by a coplanar waveguide with ground transmission line at
Qian Chen, Songlin Yan, Xinyue Guo, Wei Wang, Zhixiang Huang, Lixia Yang, Yingsong Li, Xianling Liang   +7 more
doaj   +1 more source

Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films

Advanced Functional Materials, EarlyView.
Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee, Yun‐Tae Kim, Hwarang Choi, Sanghwan Park, Seongyeop Lim, Chang Young Lee   +5 more
wiley   +1 more source

Metamaterial enhanced phased-array antenna

, 2022
S.1119-1122In this work, different approaches for enhancing radiation properties of phased-array antennas based on metamaterials (MTM) are presented. In case of antenna front-end technology, efforts have been done in designing metaradomes for mitigation ...
Martel, C., Rodriguez, P., Herbertz, K., Dousset, T., Galvis Salzburg, C., Bertuch, T., Marcotegui, J.A., Falcone, F., Boust, F., Martinaud, J.-P., Loecker, C., Beruete, M., Crepin, T.   +12 more
core   +1 more source

Swelling‐Programmed Topographical Guidance for Dynamic Spheroid Self‐Assembly via a Mechanochemical Hydrogel Niche

Advanced Functional Materials, EarlyView.
A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam, Seon Yeong Chae, Young Woo Kwon, Hye Jin Heo, Hye Rin Lee, Ji Hyeok Lee, Dong‐Wook Han, Yun Hak Kim, Suck Won Hong   +8 more
wiley   +1 more source

MM-Wave Phased Array Quasi-Yagi Antenna for the Upcoming 5G Cellular Communications

Applied Sciences, 2019
The focus of this manuscript was to propose a new phased array antenna design for the fifth generation (5G) mobile platforms. Eight elements of compact Quasi-Yagi antennas were placed on the top portion of smartphone printed circuits board (PCB) to form ...
Naser Ojaroudi Parchin, Mohammad Alibakhshikenari, Haleh Jahanbakhsh Basherlou, Raed A. Abd-Alhameed, Jonathan Rodriguez, Ernesto Limiti   +5 more
doaj   +1 more source

Transfer Printing and Reconfiguration of Soft Electronics Using Digital Microfluidics and Laser Machining

Advanced Functional Materials, EarlyView.
This paper presents a digital microfluidics‐based technique for transferring and reconfiguring soft nanomembranes. Laser‐machined nanothin membranes are picked up, transported, and aligned via tailored surface tension and the actuation of water droplets, enabling the development of flexible electronics, the integration of functional materials on 3D ...
Quang Anh Nguyen, Chi Cong Nguyen, Tran Bach Dang, Phuoc Thien Phan, Jordan Thorpe, Michael Listyawan, Nhat Minh Doan, Sinuo Zhao, Hongru Chen, Trung Thien Hoang, Mingsheng Xu, Jisheng Han, Thanh Nho Do, Adam Hill, Timothée Mouterde, Hoang‐Phuong Phan   +15 more
wiley   +1 more source

Phased Antenna Arrays, Software Defined Radio and Artificial Intelligence: Advancing LEO Satellite Communications

Advances in Electrical and Computer Engineering
This article explores how phased antenna arrays can enhance Low Earth Orbit (LEO) satellite reception systems, while addressing cybersecurity challenges in wireless communications.
ADOMNITEI, C.-I., LESANU, C.-E., DONE, A., COCA, E., LAVRIC, A.   +4 more
doaj   +1 more source

Time resolution of cosmic noise observations with a correlation experiment [PDF]

, 2004
International audienceA radio wave correlation experiment using a Mills Cross technique can be used to observe the cosmic noise intensity from the ground for the purpose of determining the absorption in the ionosphere.
E. Nielsen, Nielsen, E., Grill, M., F. Honary, Honary, F., M. Grill   +5 more
core   +1 more source

Exciton Binding Energy of Phosphorescent Emitter Molecules in Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Energy level alignment is key to efficient OLED design, yet determining LUMO energies remains challenging. A methodology based on field‐induced dissociation and kinetic Monte Carlo simulations is presented to extract LUMO energies of iridium‐based phosphorescent emitters from their exciton binding energy.
Hiroki Tomita, Lucas R. L. Norg, Patrick Diederen, Clint van Hoesel, Christ H. L. Weijtens, Peter A. Bobbert, Reinder Coehoorn   +6 more
wiley   +1 more source