Article
Improving the High-Frequency Attenuation of Shunt Capacitor, Low-Pass Filters
Proceedings of the IEEE International Symposium on Electromagnetic Compatibility (2001, Montreal, Quebec)
Abstract
Circuit board mounted, shunt capacitive filters are less effective at high frequencies because of the mutual inductance (M) that exists between the input and output ports. An approximate expression for the mutual inductance is M=(μh/2π)ln(h/a); where h=via length and a=radius of the via connecting the capacitor to the return plane. The reduced mutual inductance associated with the new, three-terminal, surface-mounted capacitor results in more than 15 dB increased attenuation compared to two-terminal capacitors over the 0.3-6.0 GHz range with 50 Ω source and load terminations
Meeting Name
IEEE International Symposium on Electromagnetic Compatibility (2001: Aug. 13-17, Montreal, Quebec)
Department(s)
Electrical and Computer Engineering
Research Center/Lab(s)
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
- 0.3 to 6.0 GHz,
- 50 Ohm,
- Capacitors,
- Equivalent Circuits,
- High-Frequency Attenuation Improvement,
- Inductance,
- Input Ports,
- Load Terminations,
- Low-Pass Filters,
- Mutual Inductance,
- Output Ports,
- Shunt Capacitor Low-Pass Filters,
- Source Terminations,
- Surface Mount Technology,
- Three-Terminal Surface-Mounted Capacitor,
- Electric Impedance,
- Electric Load Management,
- Schematic Diagrams,
- Shunt Capacitors,
- Electromagnetic Wave Attenuation
International Standard Book Number (ISBN)
780365690
Document Type
Article - Conference proceedings
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2001 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
8-1-2001
Publication Date
01 Aug 2001
Disciplines
Citation Information
Christopher N. Olsen, Thomas Van Doren, Todd H. Hubing, James L. Drewniak, et al.. "Improving the High-Frequency Attenuation of Shunt Capacitor, Low-Pass Filters" Proceedings of the IEEE International Symposium on Electromagnetic Compatibility (2001, Montreal, Quebec) Vol. 1 (2001) p. 487 - 489 ISSN: 0190-1494 Available at: http://works.bepress.com/thomas-vandoren/57/