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A novel low-cost filter design for common-mode noise suppression in high-speed differential signals is proposed. It is realized by etching a HU-shaped defected-ground structure (DGS) to perturb the return current of the common-mode noise. A simple LC resonator model for the proposed structure is also developed with good agreement to the full-wave simulation and measurement result. It is found that over 15 dB of common-mode noise suppression can be achieved over a wide frequency ranges from 3.6 to 9.1 GHz, while the differential signals still keep good signal integrity in eye-pattern observation.
Published in:
Electromagnetic Compatibility, 2008. EMC 2008. IEEE International Symposium on
Date of Conference: 18-22 Aug. 2008
- Page(s):
- 1 - 4
- Print ISBN:
- 978-1-4244-1699-8
- INSPEC Accession Number:
- 10288306
- Conference Location :
- Detroit, MI
- Digital Object Identifier :
- 10.1109/ISEMC.2008.4652072
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