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The Development of a Closed-Form Expression for the Input Impedance of Power-Return Plane Structures.
- Source :
-
IEEE Transactions on Electromagnetic Compatibility . Aug2003, Vol. 45 Issue 3, p478-485. 8p. 2 Black and White Photographs, 5 Graphs. - Publication Year :
- 2003
-
Abstract
- In multilayer printed circuit boards, the noise on the power bus is influenced by the impedance between the power and ground planes. Power-bus noise estimates require an accurate estimate of the power-bus input impedance. This paper develops a closed-form estimate of the input impedance for circular power-return plane structures. When the structure is lossy (e.g., boards employing embedded capacitance or densely populated boards), the energy reflected from the board edge does not significantly affect the input impedance. In general, the expressions developed here for circular structures can be used to estimate the impedance of lossy power-return plane structures of any shape. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ELECTRIC power distribution
*RADIO lines
Subjects
Details
- Language :
- English
- ISSN :
- 00189375
- Volume :
- 45
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Electromagnetic Compatibility
- Publication Type :
- Academic Journal
- Accession number :
- 10893453
- Full Text :
- https://doi.org/10.1109/TEMC.2003.815531