Results 221 to 230 of about 1,697 (260)

Investigations into Polarisations in Dielectric Resonator Antenna

2018
This paper presented investigations into polarization for designing antennas. The left-hand and right-hand polarization switchable cylindrical DRA has been investigated using two crossed slots of unequal lengths. They couple energy through an aperture-coupled microstrip feed line.
Ashok Kumar, Rajveer S. Yaduvanshi
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Change of Dielectric Polarisation of Carbon Disulphide with Temperature

Nature, 1931
ONE of us (J. M.) has determined the changes of density D and dielectric constant E of carbon disulphide with temperature.
M. WOLFKE, J. MAZUR
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Polarisation phenomena in dielectrics: a comment

Journal of Physics D: Applied Physics, 1979
Discusses the behaviour of decay voltage and recovery voltage curves of capacitors under isothermal and nonisothermal conditions.
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Influence of polarisation on breakdownstrength of polymeric composite dielectrics

IEE Proceedings - Science, Measurement and Technology, 2001
The results of a study of electrical characteristics such as permittivity /spl epsiv/, loss factor tan/spl delta/ and breakdown strength E/sub b/ of new composite materials on the basis of polyvinylchloride filled with ferroelectric ceramic powder PZT are presented.
O.S. Gefle, S.M. Lebedev, Y.P. Pokholkov, D.P. Agoris, I. Vitellas   +4 more
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Fluctuations of partial polarisations in dielectrics

Journal of Physics C: Solid State Physics, 1979
A theory of fluctuations of partial polarisations in dielectrics is formulated on the basis of macroscopic phenomenological equations and thermodynamic fluctuation theory. The distinction between the high-frequency polarisability of molecules and the low-frequency dielectric behaviour of their permanent dipoles gives rise to the selection of local and ...
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Polarisation-dependent Attenuation Of Dielectric Cylinder Arrays

International Geoscience and Remote Sensing Symposium, 'Remote Sensing: Moving Toward the 21st Century'., 2005
Inventory of land use by remote sensing is in many cases associated with electromagnetic waves, originating from spacecraft or airplane, on dielectric cylinder arrays. In models or laboratory measurement many natural targets like cereals or coniferous trees may be represented by lossy dielectric cylinders Ill. Depending on the polarization the incident
W. Wiesbeck, D.I. Gihny, S. Riegger
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A variable polarisation compensator using artificial dielectrics

Optics Communications, 1999
Abstract Artificial dielectrics can be made to exhibit strong birefringence. This property may be used to construct waveplates for a variety of applications. In this article, a method for making a variable artificial dielectric retarder, akin to a Babinet–Soleil compensator, is investigated.
David R.S. Cumming, Richard J. Blaikie
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Hopping losses in polarisable dielectric media

Nature, 1974
The loss in most dielectric materials shows a component that is ‘flat’ in frequency over several decades and does not depend strongly on temperature. The usual interpretation as the sum of many Debye-like loss peaks is criticised and a new model is proposed in which charge carriers hop between localised sites in a polarisable medium.
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Dielectric Relaxation Study from Polarisability Data

Physics and Chemistry of Liquids, 1989
Abstract An analysis of the dielectric data using the polarisability plots have been carried out in our earlier paper [Current Sci. India 15 (1982) 695]. The polarisability equations proposed in our earlier paper have been modified by introducing a correction term.
J. P. Shukla, Rajni Misra, Amar Singh, Manisha Gupta, M. C. Saxena   +4 more
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A Dual-Polarised Dielectric Near-Field Probe

2007 2nd International ITG Conference on Antennas, 2007
This paper presents a novel dielectric near-field probe as an alternative for the conventional open-ended waveguide probes. The latter tend to be bulky in the mobile communication frequency bands (GSM 900 and GSM 1800). Furthermore they show significant interaction with the AUT as compared to the proposed dielectric probe.
M.M. Leibfritz, C.H. Schmidt, F.M. Landstorfer, T.F. Eibert   +3 more
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