Results 41 to 50 of about 1,413,233 (284)

Liquid Crystal-Based Wideband Reconfigurable Leaky Wave X-Band Antenna

IEEE Access, 2019
In this paper, a pattern and frequency reconfigurable leaky wave X-band antenna based on liquid crystal is designed. The frequency sweep characteristics of traditional leaky wave antennas are replaced by electrical properties of liquid crystal materials.
Di Jiang, Xiaoyu Li, Zihao Fu, Puhang Ran, Guofu Wang, Zhi Zheng, Tianliang Zhang, Wen-Qin Wang   +7 more
doaj   +1 more source

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

Advanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco, Valerio Francesco Annese, Valerio Galli, Ilaria Penna, Debora Russo, Marina Veronesi, Rita Scarpelli, Stefania Sabella, Mario Caironi   +8 more
wiley   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Possible Leaky Wave Antennas for Propagation Therapy using SAR Analysis

, 2021
This paper presents an overview of design and functionality of three novel leaky wave antennas (LWAs) that are proposed as a possible hyperthermia system using LWA logic. LWAs are best known for their interesting property of frequency scanning.
Sarabi, Masoud, Perger, Warren F.
core  

Design of tapered leaky-wave antennas in hybrid waveguide-planar technology for millimeter waveband applications [PDF]

, 2005
Different types of waveguide leaky-wave antennas, asymmetrically perturbed with printed-circuits, are studied in this paper. The capability to modify the leakage constant of the excited leaky-wave mode, while maintaining unchanged its phase constant,
Melcón Álvarez, Alejandro, Guglielmi, Marco, Torre Martínez, Alejandro de la, Cañete Rebenaque, David, Gómez Tornero, José Luis   +4 more
core   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Terahertz radar with all-dielectric leaky-wave antenna

APL Photonics
Terahertz radars based on leaky-wave antennas are promising for the realization of radar systems with high resolution over short ranges. This type of radar relies on spatial frequency mapping to realize a wide field of view without mechanical actuation ...
Harrison Lees, Daniel Headland, Shuichi Murakami, Masayuki Fujita, Withawat Withayachumnankul   +4 more
doaj   +1 more source

High Efficiency and Broadband Microstrip Leaky-Wave Antenna

Active and Passive Electronic Components, 2008
A novel layout of leaky-wave antennas based on tapered design has been proposed and investigated. The new tapered leaky-wave antenna (LWA) was designed running a simple procedure which uses an FDTD code, and using a suitable metal walls down the ...
Onofrio Losito
doaj   +1 more source

Guiding and Leakage Dispersion Characteristic of TM01Mode in a Circular Dielectric Rod

International Journal of Antennas and Propagation, 2022
Open dielectric waveguide structures such as circular dielectric rods can be used as antennas by leaking energy in the transverse direction or as guiding structures with low loss in integrated circuits at different frequency ranges.
Ersoy Kelebekler
doaj   +1 more source

Broadband THz Corrugated Bull’s Eye Antennas

IEEE Access, 2021
A 3-dB gain and input impedance bandwidth enhancement technique for THz periodically corrugated metallic antennas, also known as Bull’s Eye antennas, is presented. A novel design that exploits the depth qualities of the corrugations is introduced,
Despoina Kampouridou, Alexandros Feresidis   +1 more
doaj   +1 more source