developing a rapid, nondestructive and reliable method to measure moisture content of date fruit is of interest in pre- and post-harvest processes of this valuable product. throughout this research, by putting date palm fruits (cv. mazafati) in a parallel plate capacitor, the sinusoidal alternative voltage in the frequency range of 1 to 100 mhz was exerted to the dates and the response of the c...

In order to understand the recovery characteristics of AC contactors and improve their performance, experimental measurements were used to investigate the arcing gap recovery process including dielectric recovery strength and reignition, to a pair of splitter plate together and four kinds of arc chamber of AC contactors. A special circuit was designed to perform the work. It demonstrates that u...

In this work, we investigate the charging and reliability of interlayer dielectric materials that are used in the fabrication process of advanced RF-MEMS switches. In particular, the charge stored on the surface of a dielectric and the dynamic of this charge at Nanometric scale are studied. More attention is given to the decay of the deposited charge by a variety of means: (1) surface conductio...

A new configuration of dielectric-loaded resonator (DR), particularly versatile for the complex permittivity measurement substrates microwave circuits, even in presence back metal plates, is shown here. To test this technique a wide interval values permittivity, versatility 3-D printing exploited to print samples with different densities, thus artificially changing effective (1.7–3.1) real part...

High-frequency electromagnetic (HF-EM) measurement techniques, e.g. dielectric spectroscopy, give inside into soil physical properties which are related to soil/water interactions such as the soil water characteristics. The open-ended coaxial line technique offers a non destructive determination of dielectric spectra of fine grained soil. In this study, a commercially available Agilent high tem...

Being dependent on temperature and frequency, dielectric properties are related to various types of food. Predicting multiple physical characteristics of agri-food products has been the main objective of non-destructive assessment possibilities executed in many studies on horticultural products and food materials. This review manipulates the basic fundamentals of dielectric properties with thei...

This paper provides a modified formula for calculating dielectric loss of dielectric resonator of working in TE01δ mode in closed cavity. The measurement system is divided into six regions. Based on analyzing the formula of loss tangent published in literatures, a quality factor of a substrate is created, and a modified formula is proposed. Validating the modified formula, with three substrates...

ABSTRACT. A new technique for the measurement of dielectric constant of materials, using a partially filled waveguide cell and a new mixture equation, has been developed which is first tested for teflon and then used to measure the dielectric constant of rice and air mixture in the frequency range of 2.6GHz to 3.9GHz. The values of dielectric constant of rice grain obtained using the mixture mo...