Measurement Methods and Extraction Techniques to Obtain the Dielectric Properties of Materials

Abstract

Material characterization plays an important role in many applications that are called as security, military, communication, bioengineering, medical treatment, food industry, and material processing, since it is useful to identify other properties such as stress-strain relation, bio content, moisture content, materials density, etc. Therefore, the dielectric properties of materials should be achieved with high accuracy using appropriate measurement techniques and extraction techniques. There are many measurement methods to obtain the dielectric properties of materials, which can be divided into two categories: up conversion and down conversion methods. A microwave measurement method can be called as frequency up conversion, while THz time-domain spectroscopy (THz-TDS) system is a frequency down conversion method. The selection of more convenient measurement method depends on some parameters such as frequency range, material phase, and temperature. In this chapter, the measurement methods and extraction techniques will be discussed, and alternative ways will be presented with experimental and simulation results.

Investigating and characterizing electrical properties of polypyrrole/SiO2/FePS3 nanocomposite

“…[8][9][10] As a common knowledge, dielectric measurements are crucial in a number of industries, including food, electronics, antennas, pharmaceuticals, defense and aerospace to create stealth technologies, and more. 11 Among different conductive polymers, polypyrrole (PPy) which is a conjugated polymer that possesses a straight forward synthesis method, attractive high electrical conductivity, and reasonable thermal and environmental stability. 12,13 PPy is particularly and extensively used in commercial applications owing to its high conductivity, high energy density, good durability, and low toxicity.…”

“…The type, concentration, and dispersion of the nanofillers as well as the interactions between the polymer matrix and the fillers all have an effect on the dielectric properties of the polymeric nanocomposites that leads to better electrical energy transfer and storage capacities 8–10 . As a common knowledge, dielectric measurements are crucial in a number of industries, including food, electronics, antennas, pharmaceuticals, defense and aerospace to create stealth technologies, and more 11 …”

Investigation of Gain Enhancement in Microstrip Antenna Structure in Pathological Tissue Samples

“…In medical applications, antenna structures are among the growing trends (Baek, Kim, Park, Jeong, & Kim, 2018;Catherwood & Mclaughlin, 2018;Darwish & Hassanien, 2011; R. Das & Yoo, 2018;Garcia-pardo et al, 2018;Ozturk & Güneşer, 2019;Ren, Qing, Zhao, Wang, & Gao, 2018;Schwartz, n.d.;Sun, Muneer, Li, & Zhu, 2018). Especially microstrip patch antenna structures use often in biomedical solutions (Hasan, Shanto, Howlader, & Jahan, 2018;Khan, Razzaq, Iqbal, Qamar, & Zubair, 2018;Li, Guo, Zhang, & Du, 2017;Nesasudha & Fairy, 2018;Sabban, 2013;Top, 2017;Z.…”

Indoor Material Properties Extraction from Scattering Parameters at Frequencies from 750 GHz to 1.1 THz

“…In fact, the main techniques for characterizing dielectrics are namely, time-domain spectroscopy (frequency down-conversion) and measurements using a vector network analyzer (frequency up-conversion) [3]. The selection of the most suitable measurement method depends on some parameters such as the material phase, temperature and frequency range [4]. In [5] the measured complex dielectric and magnetic properties of liquid and solid biological tissues removed from human arteries at the frequency range from 110 to 170 GHz are presented.…”