It's fun to think about the fundamental physical constants. These are special values used in our models of the physical universe. They include things like the speed of light, the gravitational ...

FR4 is FR4, right? For a lot of PCB designs, the answer is yes — the particular characteristics of the substrate material don’t impact your design in any major way. But things get a little weird up in ...

Electromagnetic metamaterials with negative physical parameters such as negative dielectric constant and negative magnetic permeability have attracted widespread attention in the academic community.

A new technical paper titled “Characterizing the Broadband RF Permittivity of 3D-Integrated Layers in a Glass Wafer Stack from 100 MHz to 30 GHz” was published by researchers at NIST. “We present a ...

Abstract: The relative permittivity of printed circuit board laminates is determined from the experimental propagation constant obtained from striplines. For this aim, the phase constant associated ...

Abstract: This paper presents a free-space method for the measurement of the relative permittivity of planar low-loss materials, using one-port scattering parameters. The proposed method estimates the ...

Succeeded in developing a ferroelectric dimeric liquid crystal with huge spontaneous polarization (8 μCcm-2) and dielectric constant (8,000) at low temperatures (55℃ and higher) Achieved huge ...

In this study, tungsten carbide (WC) microparticles with different sizes were synthesized by the heating-programmed temperature method. Tungsten carbide produces obvious resonance peaks at ...