Results 251 to 260 of about 856,870 (289)

Passive Reconfigurable Dual Linear and Dual Circular Polarization with CLRH-TL for Triangular Microstrip Patch Array

2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (USNC-URSI), 2023
Passively controlled antenna arrays for a variety of applications can require a myriad of design criteria such as beam steering, wideband operation, and reconfigurable dual linear and dual circular polarizations.
Alexander R. Dacey, J. Venkataraman
semanticscholar   +1 more source

The shunt-driven circular loop antenna

, 1971
Ronold W. P. King
openalex   +2 more sources

Communication Compact Microstrip Leaky-Wave Antenna for Wide-Angle Beam Scanning With Circular Polarization

IEEE Transactions on Antennas and Propagation, 2022
In this communication, a meandered microstrip line leaky-wave antenna (LWA) is proposed with circular polarization (CP), high radiation gain, and wide beam scanning range. The utilization of periodical meander technology in the microstrip line format not
Shengnan Zhao, Yuandan Dong
semanticscholar   +1 more source

Circular shunt in fetal absent pulmonary valve with tricuspid stenosis

Pediatrics International, 2023
T. Toyokawa, N. Inamura, Y. Kawazu, F. Kayatani   +3 more
semanticscholar   +1 more source

Design of Wideband Metasurface-Based Linear to Circular Polarizers

European Conference on Antennas and Propagation
We provide a new theoretical method to compute the required sheet admittance of the metasurfaces (MSs) used to implement a wideband linear-to-circular polarization converter (LP-to-CP), which consists of three cascaded MSs, separated by dielectric slabs.
Ahmed D. Alwakil, R. Contreres, M. Ettorre, R. Sauleau   +3 more
semanticscholar   +1 more source

Design of RF MEMS Shunt Capacitive Switches Using Dimples and Meanders

International Conference on Wireless Networks and Mobile Communications
This paper presents the RF performance analysis of various designs of RF - MEMS shunt capacitive switches in coplanar configuration. The switches consist of slotted bridges of a variety of shapes such as circular, hexagonal, and rectangular.
Qamar Hassan, Mirza Shujaat Ali, J. Kazim, F. A. Tahir, M. Imran, Qammer H. Abbasi   +5 more
semanticscholar   +1 more source

Bioplastics for a circular economy

Nature Reviews Materials, 2022
Jan-Georg Rosenboom, Robert Samuel Langer Jr, Giovanni Traverso   +2 more
exaly  

Chemical recycling to monomer for an ideal, circular polymer economy

Nature Reviews Materials, 2020
Geoffrey W Coates, Yutan D Y L Getzler
exaly  

The expanding regulatory mechanisms and cellular functions of circular RNAs

Nature Reviews Molecular Cell Biology, 2020
Ling-Ling Chen
exaly  

New frontiers in enzyme immobilisation: robust biocatalysts for a circular bio-based economy

Chemical Society Reviews, 2021
Roger Arthur Sheldon, Dean Brady
exaly