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In this paper general strategies for the characterization of a power delivery network are presented. A different approach is applied to measured or simulated S-parameters of a multiport system to generate an equivalent circuit network representation of the system of interest. The synthesized networks are compatible with Spice-based circuit simulators. The Spice netlist is usable in a general circuit...
A model to predict radiated emission from three-phase induction machines supplied by a voltage source inverter is proposed. Application of pulse-width-modulation (PWM) inverter source is analyzed, and a numerical example show the applicability of the approach in order to predict the radiated emission spectra.
This work introduces a low cost solution for the realization of frequency selective spatial filters for wireless applications. The paper illustrates a complete solution to model, design and measure the frequency behaviour of these devices. In particular, an experimental setup that takes into account real case installations is described. To demonstrate the validity of the application, some prototypes...
To evaluate magnetic fields radiated by electronic components, different radiated emission models have been created. Within IRSEEM, a model based on equivalent sources obtained from near-field measurements has been developed. The aim of our study is to insert this model into commercial electromagnetic tools such as HFSS to make it helpful for engineers.
This paper presents chip level techniques to improve electro-magnetic interference (EMI) characteristics of LCD-TV panels. A timing controller (TCON) uses over-driving algorithms to improve the response time of liquid crystals (LC). Since this algorithm needs previous frame data, external memory such as double data rate synchronous DRAM (DDR SDRAM) is widely used as a frame buffer. A TTL interface...
The analysis and the design of the power delivery network (PDN) is crucial in the real world of high-speed and high-performance on-board systems. In this context, the cavity model (where facing portions of power bus are considered electromagnetic resonant cavities) can be used to study the generation and propagation of noise. Given a real-world board's layout, one of the primary requirements for the...
In this paper a distributed-constants model to predict conducted emission in three-phase asynchronous drives is presented. The model permits to derive the spectra of conducted emissions in several position of the drive system. The numeric results obtained with the proposed approach is useful to design a drive that match the EMC Normative.
The consistent and cost-effective modeling of large-scale EMC structures, is presented in this paper via a novel parametric hybrid method. The proposed scheme blends a stencil-optimized time-domain algorithm in curvilinear coordinates and a modified finite-element time-domain approach to divide the problem into smaller flexible regions. Constructing a class of curvilinear 3-D operators, the framework...
The GTEM cell method to measuring shielding effectiveness is accepted by ANSI/SCTE48-3 2004, but there is no analysis of the influences of the introduction of cable under test(CUT) on the VSWR of GTEM cell, which will result in measure error. The influences of the size, position, shape and direction of CUT is analyzed by simulation, and the influences of the direction is analyzed by experiment. The...
If a PCB is struck by an ESD the injected current spreads throughout the PCB and returns via attached cables. During the current spread a variety of effects occur: The current spreads on the main ground and power planes, couples into traces and IC lead-frames and bond wires. Further, the PCB and the attached cables can form resonators causing ringing at their natural resonance frequencies. Understanding...
This paper presents the last results obtained over a four-year, in-depth study of the mechanisms of parasitic EMC emissions generated by an in-house PLC network. Common mode current generation and its effect on the parasitic field emissions is the core of this paper. Numerical simulations and experimental measurements of a 1:1 scale representative room built on a CISPR 16 compliant Open Area Test...
Metamaterials (MTM) have recently attracted much attention in electromagnetic engineering. Initial studies have focused on understanding their electromagnetic properties and responses, but applications have also begun to appear in the literature. This paper presents visualization of electromagnetic waves interacting with multi-layer MTM slabs in two-dimension as well as analytical and numerical S-parameter...
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