Results 101 to 110 of about 25,376 (311)

Feed model for the tapered slot antennas [PDF]

2008 4th International Conference on Ultrawideband and Ultrashort Impulse Signals, 2008
In this paper we will describe the feed model for the tapered slot antennas (TSAs) and will find one of the important parameter of this model - transformation coefficient.
openaire   +2 more sources

Phase control circuits using frequency multiplications for phased array antennas [PDF]

, 1973
A phase control coupling circuit for use with a phased array antenna is described. The coupling circuit includes a combining circuit which is coupled to a transmission line, a frequency multiplier circuit which is coupled to the combining circuit, and a ...
Caron, P. R., Mailloux, R. J.
core   +1 more source

A Smart Magnetically Actuated Flip‐Disc Programmable Metasurface with Ultralow Power Consumption for Real‐Time Channel Control

Advanced Functional Materials, EarlyView.
The study proposes a 1‐bit programmable metasurface based on flip‐disc display, named flip‐disc metasurface (FD‐MTS). This new design enables ultralow energy consumption while maintaining coding patterns. It also exhibits high scalability and multifunctional flexibility.
Jiang Han Bao, Che Liu, Jia Cheng Li, Zhen Hao Fu, Yi Su Huang, Si Qi Huang, Lei Zhang, Jian Wei You, Tie Jun Cui   +8 more
wiley   +1 more source

Multi‐Domain Detection Computational Imaging via Reconfigurable Metasurfaces MIMO System

Advanced Materials Interfaces
A reconfigurable transmission metasurfaces (RTMs) excited by a multiple‐input multiple‐output (MIMO)( RTMs‐MIMO) antenna is designed to implement multi‐domain metamaterial computational imaging (MCI).
Jianghao Tian, Xiangyu Cao, Huanhuan Yang, Tong Li, Sijia Li   +4 more
doaj   +1 more source

Solvent‐Free Bonding Mechanisms and Microstructure Engineering in Dry Electrode Technology for Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
Dry electrode technology revolutionizes battery manufacturing by eliminating toxic solvents and energy‐intensive drying. This work details two promising techniques: dry spray deposition and polymer fibrillation. How their unique solvent‐free bonding mechanisms create uniform microstructures for thicker, denser electrodes, boosting energy density and ...
Yuhao Liang, Hao Long, Zimo Huang, Ting He, Xueming Chen, Meng Li, Hao Chen, Shanqing Zhang   +7 more
wiley   +1 more source

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

Advanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai, Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +6 more
wiley   +1 more source

A 3D-Printed Spherical Dual-Circular Polarized Luneburg Lens Antenna for Ku-Band

IEEE Access
In this paper, we propose a novel three-dimensional-printed Luneburg lens for converting linear polarization to dual-circular polarization and successfully apply it in a multibeam antenna.
Qing Wang, Xiaohai Han, Pu Yu, Jian-Qiang Hou, Zhen-Ya Lei   +4 more
doaj   +1 more source

Low-loss frequency scanning planar array with hybrid feeding structure for low-altitude detection radar

The Journal of Engineering, 2019
A 1 × 4 low-loss frequency scanning planar array with hybrid feeding structure in Ku-band has been designed. In order to improve the array efficiency, the planar array was designed by four parallel sub-arrays and the waveguide slow-wave line structure ...
Hao Wang, Yaodan Zhang, Yan Wang, Shuanglong Quan, Dalong Xu   +4 more
doaj   +1 more source

Energy‐Efficient Bulk Photoalignment of Main‐Chain Liquid Crystalline Polymers Enabled by In Situ Monitoring

Advanced Functional Materials, EarlyView.
In situ monitoring of bulk photoalignment reveals how molecular weight, azobenzene content, cooling rate, and thickness govern ordering in main‐chain liquid crystalline polymers. Optimized copolymers exceed conventional thickness limits, maintaining stable alignment up to 130 µm with high energy efficiency and reversible optical patterning.
Jaechul Ju, Joy Zhou, Connor J. O'Dea, Zachariah A. Page   +3 more
wiley   +1 more source

Synthesis of improved feeds for large circular paraboloids [PDF]

Synthesis of low-noise feeds for large circular paraboloids using hybrid modes propagated in cylindrical waveguides - antenna field ...
Minnett, H., Thomas, B. M.
core   +1 more source