Analysis of simple two-capacitor low-pass filters

Author

Zeeff, Theodore M. ; Hubing, Todd H. ; Van Doren, Thomas P. ; Pommerenke, David

Author_Institution

Hewlett-Packard Co., San Diego, CA, USA

Volume

45

Issue

4

fYear

2003

Firstpage

595

Lastpage

601

Abstract

The performance of typical low-pass capacitor filters is limited by the mutual inductance between the input and output sides of the filter. This paper describes how two appropriately spaced capacitors can be used to construct a low-pass filter with significantly better high-frequency performance than a one-capacitor filter. Laboratory measurements and numerical simulations are used to quantify the mutual inductance and compare the performance of one- and two-capacitor low-pass filters.

Keywords

Bode diagrams; capacitors; circuit simulation; electromagnetic compatibility; equivalent circuits; inductance; low-pass filters; lumped parameter networks; Bode plot; I/O filtering; equivalent circuit; high-frequency performance; lumped-element model; mutual inductance; numerical simulations; parasitic inductances; performance analysis; spaced capacitors; two-capacitor low-pass filters; voltage transfer coefficient; Capacitors; Electromagnetic measurements; Frequency; Immune system; Inductance; Laboratories; Low pass filters; Magnetic flux; Magnetic separation; Voltage;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/TEMC.2003.819059

Filename

1245211