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Full-Text Articles in Engineering
Causal Rlgc( Ƒ ) Models For Transmission Lines From Measured S-Parameters, Jianmin Zhang, James L. Drewniak, David Pommerenke, Marina Koledintseva, Richard E. Dubroff, Wheling Cheng, Zhiping Yang, Qinghua B. Chen, Antonio Orlandi
Causal Rlgc( Ƒ ) Models For Transmission Lines From Measured S-Parameters, Jianmin Zhang, James L. Drewniak, David Pommerenke, Marina Koledintseva, Richard E. Dubroff, Wheling Cheng, Zhiping Yang, Qinghua B. Chen, Antonio Orlandi
Electrical and Computer Engineering Faculty Research & Creative Works
Frequency-dependent causal RLGC(f) models are proposed for single-ended and coupled transmission lines. Dielectric loss, dielectric dispersion, and skin-effect loss are taken into account. The dielectric substrate is described by the two-term Debye frequency dependence, and the transmission line conductors are of finite conductivity. In this paper, three frequency-dependent RLGC models are studied. One is the known frequency-dependent analytical RLGC model ( RLGC-I), the second is the RLGC(f) model (RLGC-II) proposed in this paper, and the third (RLGC-III) is same as the RLGC -II, but with causality enforced by the Hilbert transform in frequency domain. The causalities of the three RLGC …
Impedance Spectroscopy Of Batio₃ Cubes Suspended In Lossy Liquids As A Physical Model Of Two-Phase System, Piotr Z. Jasinski, Vladimir Petrovsky, Fatih Dogan
Impedance Spectroscopy Of Batio₃ Cubes Suspended In Lossy Liquids As A Physical Model Of Two-Phase System, Piotr Z. Jasinski, Vladimir Petrovsky, Fatih Dogan
Materials Science and Engineering Faculty Research & Creative Works
Impedance spectroscopy techniques were used for analysis of the physical model in a two-phase system toward determining of dielectric constant of dielectric particles suspended in liquids at various solids loading (volume fraction) levels. Model experimental studies were conducted using BaTiO3 as a dielectric material that was prepared as small cubes of uniform size (2×2×1 mm). Barium titanate (BT) cubes having a dielectric constant of 3850 were immersed in liquids of low dielectric constant and moderate electrical conductivity. Measured impedance spectra consisted of two semicircles, which were fitted for (R∥C)(R∥C) equivalent circuit. The parameters obtained from fitting were compared with the …