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Electromagnetic field approach to the modeling of disk-capacitor devices

✍ Scribed by J. A. Brandão Faria

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
126 KB
Volume
48
Category
Article
ISSN
0895-2477

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✦ Synopsis

The behavior of a capacitorlike device made of a circular metallic disk on a dielectric substrate over a ground plane is analyzed. A model of the device is derived from energy-flow considerations based on fundamental electromagnetic equations. Simulation results in both the frequency domain and the time domain are presented and compared with the predictions based on the ordinary quasi-static model. A salient feature of the device, revealed by the electromagnetic model, is that at very high-frequency regimes its behavior alternates periodically from capacitive to inductive. Limitations of the model are also discussed.

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