Results 221 to 230 of about 2,245,350 (289)

A Parallel Miniature Cylindrical Ion Trap Array

Analytical Chemistry, 2000
A small mass spectrometer array is described in which each element is a cylindrical ion trap (CIT). The array contains four CITs, each having an inner radius of 2.5 mm, arranged in parallel and operated using a single electronics system under common conditions for trapping and mass analysis.
, Badman, , Cooks
openaire   +2 more sources

Printed antenna arrays with cylindrical parabolic reflector

2012 20th Telecommunications Forum (TELFOR), 2012
Concept of design and realization of high gain printed antenna structures is presented. They consist of antenna array, subreflector, feeding network and bal-un, all printed on the same dielectric substrate. Linear array is positioned on the axis focus of the cylindrical parabolic reflector.
Nešić, Aleksandar, Micic, Zoran, Radnovic, Ivana, Nešić, Dušan   +3 more
openaire   +2 more sources

Periodic Arrays of Interfacial Cylindrical Reverse Micelles

Langmuir, 2005
We report an approach for the fabrication of periodic molecular nanostructures on surfaces. The approach involves biomimetic self-organization of synthetic wedge-shaped amphiphilic molecules into multilayer arrays of cylindrical reverse micelles. The films were characterized by atomic force microscopy and X-ray reflectivity.
Mark, Nelson, Nicholas, Cain, Chad E, Taylor, Benjamin M, Ocko, Douglas L, Gin, Scott R, Hammond, Daniel K, Schwartz   +6 more
openaire   +2 more sources

A Flush-Mounted Quasi-Full-Space Beam-Scanning Cylindrical Phased Array

IEEE Transactions on Antennas and Propagation, 2019
A cylindrical phased array (CPA) for quasi-full-space wide-angle scanning is presented. The quasi-full-space scanning is achieved by combining a pattern reconfigurable technique with a subarray scanning method.
Xiao Ding, Youfeng Cheng, Xue‐Song Yang, Bingzhong Wang, D. Anagnostou   +4 more
semanticscholar   +1 more source

Fabrication of high fill factor cylindrical microlens array with isolated thermal reflow.

Applied Optics, 2018
We demonstrate a simple, controllable, and stable method for fabricating high fill factor cylindrical microlens array with a novel isolated thermal reflow process.
Jinfeng Qiu, Mujun Li, H. Ye, Chen-Yu Yang, Cuicui Shi   +4 more
semanticscholar   +1 more source

Cylindrical dielectric resonator antenna arrays

11th International Conference on Antennas and Propagation (ICAP 2001), 2001
In this paper, the study of dielectric resonator antenna arrays is reported. The results of two- and four-element linear arrays in two configurations and a four-element planar array are presented. It is shown that different configurations can be used to form cylindrical dielectric resonator antenna broadside arrays.
openaire   +1 more source

Acoustic radiation from cylindrical transducer arrays

Journal of Sound and Vibration, 2009
A method is presented to determine the omni-directional and directional far-field pressures radiated by cylindrical transducer arrays in an infinite rigid cylindrical baffle. The solution to the Helmholtz equation and the displacement continuity condition at the interface between the array and the surrounding water are used to determine the pressure ...
P.A. Nishamol, Jasmine Mathew, D.D. Ebenezer   +2 more
openaire   +1 more source

Cylindrical arrays with electronic beam scanning

Proceedings of the Institution of Electrical Engineers, 1965
This paper describes methods for enabling the directional pattern of a cylindrical array to scan continuously and repetitively through 360° by electronic means. This requires that the circular aperture distribution corresponding to the far-field directional pattern should be subjected to rotation relative to the fixed array.
D.E.N. Davies, B.S. McCartney
openaire   +1 more source

Modeling of small-size cylindrical arrays

17th International Conference on Applied Electromagnetics and Communications, 2003. ICECom 2003., 2004
The possibility for modeling and analysis of small-size cylindrical arrays with Ansoft/sup /spl reg// 3D EM simulation software (HFSS) is presented. The antenna consists of 160 microstrip patches mounted over a cylindrical body with radius 9.1 cm. The radiators are spaced in Cartesian grid and cover the arc of 123/spl deg/.
G. Bozmarova, V. Peshlov, I. Slavkov
openaire   +1 more source

Compressive beamforming on a cylindrical array

Journal of the Acoustical Society of America, 2016
Previously, we presented subarray compressive beamforming for Doppler sensitive midfrequency active sonar on a cylindrical array, focusing on practical application for mitigating Doppler spreading caused by sidelobes and the width of the main lobe [J. Acoust. Soc. Am. 139, 2050 (2016)].
Charles F. Gaumond, Jonathan Botts, Jason E. Summers   +2 more
openaire   +1 more source