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Digital filtering techniques for use with the FDTD method

✍ Scribed by Dennis M. Sullivan

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 171 KB
Volume: 12
Category: Article
ISSN: 0894-3370
DOI: 10.1002/(sici)1099-1204(199901/04)12:1/2<93::aid-jnm320>3.0.co;2-q

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✦ Synopsis

In recent years, the "nite-di!erence time-domain (FDTD) method has been used to simulate a wide range of frequency dependent media. The accuracy of these simulations often depends on how accurately the complex dielectric constant is simulated in the sampled time domain used by FDTD. This paper describes the process of modelling the complex dielectric constant as a digital "ltering problem and uses Z transforms to convert the frequency domain expression to a sampled time domain expression.

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