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The paper gives a classification and a comparison of the most commonly used methods for modeling power ground planes in power distribution networks (PDN). The influence of the model assumptions and the excitations used in the models on the accuracy are presented and discussed for different substrate technologies and geometries. All methods are validated with measurement showing a good correlation...
This paper discusses a novel design of Power Distribution Network (PDN). By physical structuring of the power plane into repetitive symmetrical and asymmetrical segments of varying size, suppression of the propagation of unwanted noise throughout the PDN over a wide frequency range is achieved. Prototype boards were built on standard FR4 and thin FR4 substrates and characterized using a Vector Network...
The Huygens' box (HB) method of replacing an arbitrary module inside an electronic apparatus with a set of current sources on a closed surface is discussed. A numerical study is performed, with a typical printed circuit board (PCB) representing the module placed inside a tight metallic enclosure. It is observed that the accuracy of the HB method is generally good except at a few resonant frequencies...
Multi-layer structures of single-walled carbon nanotubes mixtures with epoxy resin at different weight percentages are studied for maximizing the absorption of incident waves over X-Band. A short survey is also performed in 1–5 GHz. A plane wave from various elevation angles is illuminating the structure. Comparison with reference results shows satisfactory agreement. An optimization method is adopted...
This paper deals with the susceptibility to radio frequency interference (RFI) of the analog front-end circuits embedded in smart power integrated circuits (ICs). The parasitic coupling of the power section with the analog and the digital section of these devices through the silicon substrate is discussed referring to a macro model, then the causes of RFI demodulation in analog front-end circuits...
A physically based circuit model of on-chip spiral inductor made of a single-wall carbon nanotube (SWCNT) bundle is investigated. The equivalent single conductor (ESC) approach is used to model the CNT bundle. The internal frequency-dependent resistance and inductance are computed by a finite element method (FEM). The eddy-current effect in the silicon substrate is taken into account by the complex...
This study presents simple statistics based on the normal distribution of the measured complex permittivity of carbon nanocomposite sheets and an analytical approach to estimate its impact on the radar absorbing performance of the Salisbury-screen-type radar absorbing structure of the composite sheet. The composite sheets are fabricated with glass fabric/epoxy prepregs containing dispersed carbon...
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