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This paper presents the design of a planar inductor used in a low-profile organic light-emitting diode driver for large-area lighting. The design takes into account both the buck converter requirements and the electromagnetic compatibility issues. Multiple inductor design cases are investigated using EM simulations and verified by measurements. The properties of the planar inductors are represented...
A lumped-element model of a 72-nH surface-mount power inductor used in high-frequency DC-DC converters is presented. The model parameters are optimized to fit the measured impedance characteristics. Two different topologies of the characterization set-up are used: the first one to extract the model and the second to validate its impedance characteristics up to 300 MHz. The extracted model demonstrates...
Radiation characteristics of a loop antenna, small compared to the wavelength and placed centrally above a perforated finite image plane, are presented. Holes in the image plane typically occur in a multilayer printed circuit boards (PCBs) when vias pass through the second layer which serves as a reflector. A 3D finite element method (FEM) electromagnetic (EM) simulation of a System-in-Package (SiP)...
In this paper a SPICE-compatible distributed circuit modelling method is applied to the modelling of printed circuit boards (PCBs) typically found in a DC-DC converter design. The method consists of identifying each pair of parallel plates present in a PCB and modelling it by a two-dimensional array of lossy transmission line elements. The impedance profile of the PCB is simulated in SPICE. The simulation...
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