Results 111 to 120 of about 7,827 (312)

Impact of Edge Diffraction in Dual-Polarized Phased Array Antennas [PDF]

, 2020
An analytical model is proposed to characterize and quantify the effects that diffracted fields have on the performance of phased array antennas. The work involves the combination of diffraction theory techniques and how each can be used to analyze this ...
Ortiz, Javier Alejandro
core  

A Comparative Study of RBF and MLP Neural Model for Seven Element Dynamic Phased Array Smart Antenna

Journal of Advances in Information Technology, 2013
In this paper we present the neural Modelling techniques for dynamic phased array smart antenna. Neural networks are mathematical and computation models that are used to optimize the smart antenna system, which are very much suitable for real time ...
Rahul Shrivastava, Abhishek Rawat, Yogendra Kumar Jain   +2 more
doaj   +1 more source

Shaping Matter with Acoustic Waves: From Particles to Functional Structures

Advanced Functional Materials, EarlyView.
Acoustic‐directed assembly is reviewed as a materials‐oriented strategy for organizing particles, polymers, metals, and biological systems into functional structures. The review distinguishes reversible manipulation from permanent structure formation through medium fixation, particle fixation, and in situ material generation, highlighting routes toward
Avraham Kenigsberg, Shelly Zlotnikov, Maya Fiorentino, Yuval Elias, Ornit Nagler‐Avramovitz, Hagay Shpaisman   +5 more
wiley   +1 more source

Ultra-low cross polarization antenna architectures for multi-function planar phased arrays [PDF]

, 2021
For over thirty years, single-beam mechanically steered radars have dominated the field of atmospheric observations, and since then, newer improved technologies have emerged that could provide a replacement for aging radars. Phased array radar technology
Diaz Diaz, Jose
core  

Sustainable Electrochemical Synthesis of High‐Quality MXenes: Mechanistic Insights, Applications, Challenges, and Technological Prospects

Advanced Functional Materials, EarlyView.
Electrochemical etching provides an eco‐friendly alternative to hazardous HF methods for MXene production. This approach facilitates the selective isolation of the A‐layer from MAX phases with tunable surface terminations. Controlling voltage, electrolytes, temperature, and duration enables the optimal structural integrity. Nevertheless, existing scale
Jagdeep Singh, Madhusudhana M Devadiga, Santosh K. Tiwari, AS Dhaliwal, Gurpreet Singh Selopal   +4 more
wiley   +1 more source

First measurement results of a new highly-accurat SAR calibration target

, 2012
The requirements on new spaceborne synthetic aperture radar (SAR) missions are always pushed towards better image quality with respect to signal-to-noise ratio, radiometric accuracy, and spatial resolution.
Looser, Philipp, Jirousek, Matthias, Döring, Björn, Schwerdt, Marco, Philipp Looser, Matthias Jirousek, Marco Schwerdt, Bjorn J. Doring   +7 more
core   +1 more source

Metamaterial-Based Wide-Angle Scanning Circularly Polarized Phased Array With Stable Gain

IEEE Open Journal of Antennas and Propagation
In this paper, a wide-angle scanning circularly polarized phased array with stable gain is proposed. The proposed antenna array is composed of truncated microstrip antennas, four rows of mushroom metamaterials, and two tensor holographic metasurfaces ...
Xiangyu Yin, Wu Ren, Zhenghui Xue, Weiming Li   +3 more
doaj   +1 more source

Mechanical and Electrical Phenotype of hiPSC‐Cardiomyocytes on Fibronectin‐Based Hydrogels

Advanced Healthcare Materials, EarlyView.
We introduce fibronectin‐based PEG hydrogels with controlled rigidity to enable the culture of iPSC‐derived cardiomyocytes. These substrates offer an alternative to the current culture of these cells on fibronectin‐coated glass, providing enhanced structural and functional behavior. The system provides a more physiologically relevant platform to assess
Ana Da Silva Costa, Lineta Stonkute, Sara Trujillo, Mariana Azevedo Gonzalez Oliva, Francis Burton, Matthew J. Dalby, Oana Dobre, Godfrey Smith, Manuel Salmeron‐Sanchez   +8 more
wiley   +1 more source

Wireless Power Transfer to a Microaerial Vehicle with a Microwave Active Phased Array

International Journal of Antennas and Propagation, 2014
A wireless power transfer system using a microwave active phased array was developed. In the system, power is transferred to a circling microaerial vehicle (MAV) by a microwave beam of 5.8 GHz, which is formed and directed to the MAV using an active ...
Shotaro Nako, Kenta Okuda, Kengo Miyashiro, Kimiya Komurasaki, Hiroyuki Koizumi   +4 more
doaj   +1 more source

A Long‐Lived Human Neurovascular PENTA Culture Model Captures Incomplete Vascular Repair and Glia‐Associated Signaling After Traumatic Brain Injury

Advanced Healthcare Materials, EarlyView.
A long‐lived, five‐cell‐type human neurovascular (PENTA) model recreates vascular disorganization and incomplete repair after traumatic brain injury (TBI). By integrating endothelial, glial, neuronal, and immune components within a 3D scaffold, the platform enables time‐resolved analysis of neurovascular remodeling and provides a human‐relevant system ...
Daniel S. Hinrichsen, Sunghyun Jun, Colleen M. Arrasmith, Charitha C. Anamala, Mitchell D. Thielen, Anapaula Garcia, Volha Liaudanskaya   +6 more
wiley   +1 more source