Results 11 to 20 of about 99,963 (219)

SWITCH-FILTER ON A RECTANGULAR WAVEGUIDE PARTIALLY FILLED BY DIELECTRIC

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2022
At article investigates a broadband switch for microwave technology, antenna-feeder paths of which are implemented on a rectangular waveguide partially filled by dielectric.
Vitaly Pochernyaev   +2 more
doaj   +1 more source

Wideband via-Loaded Cylindrical Open-Ended SIW Cavity Antenna

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
A composite cavity-based antenna is proposed and presented in this work. Three kinds of modes of the composite structure are involved to obtain a wide bandwidth: the ${\mathrm {TE}}_{11 {\scriptstyle {}^{\scriptstyle 1}}\hspace {-0.224em}/\hspace {-0 ...
Chun-Mei Liu   +3 more
doaj   +1 more source

Circularly Polarized Split Ring Resonator Loaded Slot Antenna

open access: yesAdvanced Electromagnetics, 2018
A compact circularly polarized printed slot antenna operating at 2.45 GHz is reported. The antenna consists of a pair of rotated square split ring resonators (SRR) inside a rectangular slot etched on the ground plane of an FR-4 dielectric substrate.
A. R. Parvathy   +2 more
doaj   +1 more source

Adaptive opto-electromechanical silicon-on-insulator increased bandwidth accelerometer

open access: yesSN Applied Sciences, 2022
This paper studies the construction of a compact one-dimension-sensing iscreased bandwidth photonic accelerometer using cascaded groups of continued sections of a 50 ng seismic mass each attached to the silicon beams of two under etched slot waveguide ...
Ali Abdulsattar Hussein
doaj   +1 more source

Experimental Study of Adaptive Control of High-Speed Flow-Induced Cavity Oscillations

open access: yesJournal of Fluid Science and Technology, 2011
This paper describes progress towards the development of an active suppression system for open cavity oscillations. A leading-edge array of piezoelectric zero-net mass-flux (ZNMF) actuators is used to suppress cavity flow oscillations determined from ...
Hidemi TAKAHASHI   +6 more
doaj   +1 more source

A Compact Tri-band Printed Antenna for MIMO Applications [PDF]

open access: yes, 2015
In this paper, a compact tri-band printed multi-input multi-output (MIMO) antenna with high isolation is presented to operate within WLAN and WiMAX frequency bands.
Wang, Xuetian, Zang, Jiawei
core   +2 more sources

General Analytical Model of Magnet Average Eddy-Current Volume Losses for Comparison of Multi-phase PM Machines with Concentrated Winding [PDF]

open access: yes, 2014
this paper studies magnet eddy-current losses in permanent magnet (PM) machines with concentrated winding. First of all, space harmonics of magnetomotive force (MMF) and their influence on magnet losses in electrical machines are investigated.
ASLAN, Bassel   +2 more
core   +6 more sources

Replacing the Ethernet access mechanism with the real-time access mechanism of Twentenet [PDF]

open access: yes, 1989
The way in which a Local Area Network access mechanism (Medium Access Control protocol) designed for a specific type of physical service can be used on top of another type of physical service is discussed using a particular example.
Pras, Aiko
core   +4 more sources

Sub-6GHz 4G/5G Conformal Glasses Antennas

open access: yesIEEE Access, 2019
The difficulty of antenna design applied to glasses is that the structure of glasses is too single, and the space available for antenna design is greatly limited. In this background, the integrated design of 4G antennas and 5G antennas applied to glasses
Yan-Yan Wang, Yong-Ling Ban, Yanhui Liu
doaj   +1 more source

Designing redundant metering valves for hydraulic actuators under mixability and low cost-constraints [PDF]

open access: yes, 2010
This article deals with the design of redundant metering valves for mechanically signalled hydraulic actuators. The final aim of the work is to manufacture a new low-cost valve in replacement of the existing expensive valve with an additional leakage ...
Malburet, François   +3 more
core   +1 more source

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