Results 31 to 40 of about 120,328 (309)

A Compact Wideband Millimeter-Wave Crossover for Phased Array Antenna Systems in Remote Sensing Applications

Sensors
A new compact, wideband, millimeter-wave microstrip crossover—designed without vias—demonstrates effective performance with an insertion loss of 2 dB across a wide frequency range. For Path 1, the operational bandwidth spans 11 GHz (13–24 GHz), while for
Fayyadh H. Ahmed, Rola Saad, Salam K. Khamas   +2 more
doaj   +1 more source

Large- and Small-Scale Beam-Steering Phased Array Antennas Using Variable Phase BLC for Millimeter-Wave Applications

Sensors
This paper presents a novel switchable branch-line coupler (BLC) designed to achieve variable phase shifts while maintaining a constant output power. The proposed design incorporates low stepwise phase shifters with incremental phase shifts of 10° to 20°,
Fayyadh H. Ahmed, Salam K. Khamas
doaj   +1 more source

Wireless Networks of Smart Multisensors and Biosensor Devices for Express Diagnostics of the State of Grape and Fruit-Berry Crops and Quality Control of Winemaking Products

Кібернетика та комп'ютерні технології, 2023
The application of information and wireless technologies, multisensor and biosensor devices, as well as sensor networks based on them to control the parameters of technological processes in different industries makes it possible to greatly improve the ...
Volodymyr Romanov, Igor Galelyuka, Oleksandr Voronenko, Oleksandra Kovyrova, Hanna Antonova, Anna Kedych   +5 more
doaj   +1 more source

Super-Wideband BAVA With Enhanced Radiation Characteristics Using an Integrated Biconvex Magneto-Electric Lens for 5G mmWave Communications

IEEE Access
A super-wideband balanced antipodal Vivaldi antenna (BAVA) is proposed incorporating two pairs of lenses integrated within the tapered slot region. The first pair consists of biconvex magneto-electric lenses (ME-L), oriented horizontally with respect to ...
Fayyadh H. Ahmed, Salam K. Khamas
doaj   +1 more source

THE HISTORY OF THE USE OF WIRELESS DEVICES IN MEDICINE

Актуальні питання суспільних наук та історії медицини, 2020
The article discusses the main stages of using wireless devices and wireless data transfer technologies in medicine. Purpose of the study: to analyse the implementation history, the use of wireless computerised devices for medical dia- gnosis and ...
Sergiy NICHYI, Bohdan NICHYI
doaj   +1 more source

Anomalous Photocurrent Reversal Due to Hole Traps in AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes

Micromachines, 2022
The trap states and defects near the active region in deep-ultraviolet (DUV) light-emitting diodes (LED) were investigated through wavelength-dependent photocurrent spectroscopy.
Seungyoung Lim, Tae-Soo Kim, Jaesang Kang, Jaesun Kim, Minhyup Song, Hyun Deok Kim, Jung-Hoon Song   +6 more
doaj   +1 more source

Simplifying mmWave Transmission: A Time Modulated Array at 73 GHz With Beam Steering and Direct Digital Modulation of QPSK, 8PSK and 16QAM to 128QAM

IEEE Journal of Microwaves
We describe a beam steering 73 GHz Time Modulated Array (TMA) system that provides direct digital vector symbol modulation onto a carrier. This concept removes the need for conventional RF modulator hardware in a TX RF chain and requires only a local ...
Edward A. Ball, Sumin David Joseph
doaj   +1 more source

Wireless networks-on-chips: architecture, wireless channel, and devices

IEEE Wireless Communications, 2012
Wireless networks-on-chips (WINoCs) hold substantial promise for enhancing multicore integrated circuit performance, by augmenting conventional wired interconnects. As the number of cores per IC grows, intercore communication requirements will also grow, and WINoCs can be used to both save power and reduce latency.
Matolak, David W, Kodi, Avinash, Kaya, Savas, DiTomaso, Dominic, Laha, Soumyasanta, Rayess, William   +5 more
openaire   +2 more sources

Self‐Sintering Ionogel Binder for Flexible, Recyclable, and Healable Printed Giant Magnetoresistive Sensors

Advanced Functional Materials, EarlyView.
ABSTRACT Electronic waste has emerged as a major environmental challenge, driven by the massive consumption and a limited lifetime of modern electronic devices, stimulating the development of sustainable electronics. Here, an all‐biomaterial gelatin‐choline‐citric acid ([Ch][CA]) ionogel is developed as an active binder to realize self‐sintered ...
Lin Guo, Xiaotao Wang, Guannan Mu, Proloy Taran Das, Igor Veremchuk, Conrad Schubert, Aaron D. Cross, Yevhen Zabila, Xuan Peng, Larysa Baraban, Denys Makarov   +10 more
wiley   +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