A Multistep Approach for Accurate Permittivity Measurements of Liquids Using a Transmission Line Method

Impact of Motor Stator Winding Faults on Motor Differential-mode Impedance and Mode Transformation

“…To facilitate this study, a transmission line model of the induction motor is adopted so that the motor DM impedance under different stator winding faults can be easily determined. In general, there are two types of electrical models for an induction motor: the lumped circuit model [21][22][23][24] and transmission line model [25][26][27][28] . The lumped circuit model is commonly used to estimate the motor drive overvoltage and EMI noise emission; however, it fails to provide detailed electrical information of each turn of the stator winding [29] .…”

High‐precision dielectric sensor system based on balanced CSRR‐SIW resonators

“…According to the sensing elements, the microwave measurement methods of dielectric constant in the radio frequency bands can be generally divided into two types: the nonresonance method and the resonance method. The former mainly includes but not limited to the transmission/reflection method, [13][14][15][16] free-space approaches, [17][18][19] and RF circuit methods. 20 And the later has been drawing great interests from different fields, 21,22 owing to their merits such as easy integration with RF circuit, real-time monitoring, low cost, and compact size.…”

High‐sensitivity structure for the measurement of complex permittivity based on SIW

“…Transmission/reflection methods [1][2][3] and resonance methods [4][5][6][7] are commonly used for permittivity measurement of materials, and resonance methods are preferred due to its accuracy and high sensitivity for low loss materials [8][9][10]. For instance, the waveguide resonant resonator [11] has been very popular for its high-quality factor and high sensitivity which will contribute to accurate determination of material properties.…”