Journal ArticleDOI
SrTiO3‐Filled PTFE Composite Laminates for Microwave Substrate Applications
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TLDR
In this paper, Strontium titanate (SrTiO3) filled polytetrafluroethylene (PTFE) composites were fabricated through sigma mixing (SM), extrusion (E), calendering (C) followed by hotpressing (H) (SMECH) process.Abstract:
Strontium titanate (SrTiO3) filled polytetrafluroethylene (PTFE) substrates were fabricated through sigma mixing (SM), extrusion (E), calendering (C) followed by hotpressing (H) (SMECH) process. The filler dispersion in the polymer matrix and the surface morphology were studied using scanning electron microscopic (SEM) technique. The permittivity (ɛ′r) and loss tangent (tan δ) of the composites were measured using precision impedance and vector network analyzers. The experimental permittivity of filled composites was compared with theoretically predicted values. Dimensionally stable substrate having a permittivity of 13.1 and a loss tangent of 0.0055 at X-band was prepared in the PTFE/SrTiO3 composite system.read more
Citations
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Polymer–Ceramic Composites of 0–3 Connectivity for Circuits in Electronics: A Review
TL;DR: In this article, the authors present a brief review of the research carried out within 0-3 ceramic-polymer composites for microwave substrates, also including embedded capacitor, inductor, or microwave absorbing performances.
Journal ArticleDOI
Dielectric response of high permittivity polymer ceramic composite with low loss tangent
TL;DR: In this paper, the dielectric response of the Sr9Ce2Ti12O36 ceramics loaded high density polyethylene and epoxy resin was investigated.
Journal ArticleDOI
Polydimethylsiloxane-Embedded Conductive Fabric: Characterization and Application for Realization of Robust Passive and Active Flexible Wearable Antennas
Roy B. V. B. Simorangkir,Yang Yang,Raheel M. Hashmi,Toni Bjorninen,Karu P. Esselle,Leena Ukkonen +5 more
TL;DR: The study on polydimethylsiloxane (PDMS)-embedded conductive fabric is presented as a simple yet effective solution to the challenging issue of poor PDMS-metal adhesion, allowing for a relatively easy realization of robust flexible antennas for wearable applications.
Journal ArticleDOI
Mechanical, thermal and microwave dielectric properties of Mg2SiO4 filled Polyteterafluoroethylene composites
TL;DR: In this paper, the dielectric properties of PTFE-Mg 2 SiO 4 composites are investigated both at radio and microwave frequency ranges as a function of filler loading up to 50vol%.
Journal ArticleDOI
Effect of coupling agent on the thermal and dielectric properties of PTFE/Sm2Si2O7 composites
TL;DR: In this paper, the authors investigated the dielectric and thermal properties of PTFE/Sm2Si2O7 composites, which were prepared by powder processing technique followed by hot pressing.
References
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Journal ArticleDOI
Effective permittivity of dielectric mixtures
Ari Sihvola,Jin Au Kong +1 more
TL;DR: In this paper, the electric field inside the scatterers is determined by quasi-static analysis, assuming the diameter of the inclusion particles to be much smaller than one wavelength, and the resulting mixing formula is nonlinear and is suitable for iterative solutions.
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A precise numerical prediction of effective dielectric constant for polymer-ceramic composite based on effective-medium theory
TL;DR: In this paper, an empirical prediction model based on self-consistent theory is proposed to obtain precise prediction of effective dielectric constant of a polymer-ceramic composite for embedded capacitor application.
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The chemical bond and atomic displacements in SrTiO3 from X‐ray diffraction analysis
TL;DR: In this paper, the deformation electron-density maps and the anharmonicity of atomic displacements in strontium titanate, SrTiO 3 (Gram-Charlier model), were studied by high-precision single-crystal X-ray diffraction analysis at 145(1) and 296(2) K.
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Dielectric properties of single crystals of Al/sub 2/O/sub 3/, LaAlO/sub 3/, NdGaO/sub 3/, SrTiO/sub 3/, and MgO at cryogenic temperatures
TL;DR: In this article, a dielectric resonator technique was used for measurements of the permittivity and loss tangent of one crystalline ferroelectric substrate, SrTiO/sub 3, in the temperature range 20-300 K at microwave frequencies.
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Microwave characterization of filled polymers
TL;DR: In this article, the authors investigate the microwave response of two different types of samples: one with carbon black or silica particles embedded in a linear low-density polyethylene, and the other with carbon-black particles or carbon fibers embedded in an epoxy resin.