Results 11 to 20 of about 3,219,845 (294)

MATERIALS' INSERTION LOSS AT THREE FREQUENCY BANDS [PDF]

open access: yesProgress In Electromagnetics Research Letters, 2013
The insertion loss of different materials is measured at 2.4, 3.3 and 5.5 GHz bands. Directive antennas with a nominal gain of 19 dB are used in the measurement campaign. The height of the antennas has been selected to have the minimum possible reflection from around surfaces.
Ahmed Salih, Bazil Taha   +2 more
openaire   +3 more sources

On dynamic delay and repeater insertion in distributed capacitively coupled interconnects. [PDF]

open access: yes, 2002
Repeater insertion is a well established technique to minimise the propagation delay over long resistive interconnects. In deep sub-micron technologies, as the wires are spaced ever closer and signal rise and fall times go into the sub-nanosecond region,
Tenhunen, Hannu, Pamunuwa, Dinesh B.
core   +4 more sources

Concept study of sustainable noise control solution for HVAC systems based on microperforated elements [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2021
Recently fibreless solutions have become a trend in the design of sustainable and environmentally friendly duct silencers. In this respect microperforated panels have been proved to provide adequate performance for the substitution of unfavourable ...
Margus Villau   +2 more
doaj   +1 more source

Figure of Merit Enhancement of Laterally Vibrating RF-MEMS Resonators via Energy-Preserving Addendum Frame

open access: yesMicromachines, 2022
This paper examines a new technique to improve the figure of merit of laterally vibrating RF-MEMS resonators through an energy-preserving suspended addendum frame structure using finite element analysis. The proposed suspended addendum frame on the sides
Temesgen Bailie Workie   +4 more
doaj   +1 more source

Low-Voltage and High-Reliability RF MEMS Switch with Combined Electrothermal and Electrostatic Actuation

open access: yesMicromachines, 2021
In this paper, we report a novel laterally actuated Radio Frequency (RF) Microelectromechanical Systems (MEMS) switch, which is based on a combination of electrothermal actuation and electrostatic latching hold.
Yong Zhu, Jitendra Pal
doaj   +1 more source

A Technique for Tunable Filters with Low Insertion Loss and Narrow Bandwidth

open access: yesE3S Web of Conferences, 2018
A technique for tunable filters with low insertion loss and narrow bandwidth is proposed in the form of comb-line structure. Both resonant capacitor with pin-diodes and resonant inductance in the tunable filter were analyzed and the main source of ...
Zhou Chang, Ji Chen, Wu Gen Ping
doaj   +1 more source

Rethinking Figure-of-Merits of Liquid Crystals Shielded Coplanar Waveguide Phase Shifters at 60 GHz

open access: yesJ, 2021
The demand for reconfigurable millimetre-wave (mm-Wave) components based on highly anisotropic liquid crystals (LC) is higher than ever before for the UK and worldwide.
Jinfeng Li
doaj   +1 more source

Investigation of Insertion Loss in Inkjet-Printed Coplanar Waveguide Based on Drying Temperature [PDF]

open access: yesJournal of Electromagnetic Engineering and Science
In this study, we propose an optimized inkjet printing process to improve the insertion loss of inkjet-printed coplanar waveguide (CPW) transmission lines.
Jun Ho Yu   +4 more
doaj   +1 more source

Benefattori dall’aldilà: i lasciti per i lavori edilizi di pubblica utilità a Bologna (secoli XIII e XIV)

open access: yes, 2021
La trattazione riguarda i benefattori, i donatori che hanno deciso a Bologna di contribuire al bene comune non tramite le tradizionali istituzioni caritatevoli, quali ospedali, conventi e monasteri, ma anche attraverso l’investimento dei loro beni nel ...
Edward Loss
core   +1 more source

2D Sonic Acoustic Barrier Composed of Multiple-Row Cylindrical Scatterers: Analysis with 1:10 Scaled Wooden Models

open access: yesApplied Sciences, 2022
Theory regarding metamaterials was developed in the 1960s, aiming to control the propagation of electromagnetic waves. Under this scope, research has been focused on the realization of materials having specific characteristics to be invisible to the ...
Antonella Bevilacqua   +3 more
doaj   +1 more source

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