Topic
Dielectric loss
About: Dielectric loss is a research topic. Over the lifetime, 20296 publications have been published within this topic receiving 349254 citations.
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TL;DR: In this article, the authors measured the dielectric relaxation on water solutions of ethylene glycol 200 and 400 in entire concentration region using a time domain reflectometry at 25 C in the frequency range from 300 MHz to 20 GHz.
Abstract: Dielectric relaxation measurements on water solutions of ethylene glycol 200 and 400, (degree of polymerization N=4 and 9) in entire concentration region were carried out using a time domain reflectometry at 25 °C in the frequency range from 300 MHz to 20 GHz. For all the samples, only one dielectric loss peak was observed in this frequency range. Plots of the relaxation strength and logarithm of the relaxation time calculated from apparent peak frequency of dielectric loss curves against monomer unit molar fraction of ethylene glycol X give straight lines in the region of 0
97 citations
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TL;DR: In this article, the propagation modes of a dielectric-slab waveguide consisting of a core and metal clads are analyzed numerically by using a simplified model and the behavior of modes is graphically shown.
Abstract: Propagating modes of a dielectric-slab waveguide consisting of a dielectric core and metal clads are analyzed numerically by using a simplified model The behavior of modes is graphically shown and their peculiarities due to dielectric properties of metal are described It is shown that the TE 0 mode has the smallest attenuation constant when the wavelength is sufficiently short and that the TM 0 mode changes continuously to the TEM mode of a parallel-plate waveguide in the submillimeter region, but it has generally a very high attenuation at an optical wavelength
97 citations
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12 Dec 2005TL;DR: In this article, the design of a one-layer ultra-thin meta-surface absorber having a simple geometry is demonstrated, where the absorber is constructed of a periodic array of square patches printed on a dielectric material backed by a PEC.
Abstract: In this paper, the design of a one-layer ultra-thin meta-surface absorber having a simple geometry is demonstrated The absorber is constructed of a periodic array of square patches printed on a dielectric material backed by a PEC The square patches are coupled to each other through lossy dielectric materials representing lumped resistors Therefore, at the resonant frequency of meta-surface the structure is equivalent to a resistive sheet where by tuning the value of dielectric loss an impedance match to the free space is successfully accomplished
96 citations
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TL;DR: In this article, a dc sputtering technique with a post deposition rapid thermal annealing treatment at 650 °C for 10 s was used for lead zirconate titanate films.
Abstract: Lead zirconate titanate films have been fabricated by a dc sputtering technique with a post deposition rapid thermal annealing treatment at 650 °C for 10 s. The films exhibited good structural, dielectric, and ferroelectric properties compared to conventional furnace‐annealed films. The measured dielectric constant and loss tangent at 1 kHz were 900 and 0.04 and the remanent polarization and coercive field values were 10 μC/cm2 and 23 kV/cm, respectively. No significant fatigue in polarization was observed in the films up to 1010 cycles of bipolar stress. The films were optically transparent and showed a linear electro‐optic (EO) effect after poling with an EO coefficient of 1.5×10 −11 m/V.
96 citations
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TL;DR: In this article, the influence of the Nb2O5/Ta 2O5 additive on the structure and electrical properties of Bi4Ti3−2xNbxTaxO12 (BTNT) ceramics was investigated and the results showed thermal variations of permittivity and dielectric loss with a diffuse phase transformation.
96 citations