Summary
International Symposium on Electromagnetic Compatibility
2009
Session Number:21Q3
Session:
Number:21Q3-4
A Novel Periodic Structure for Suppression of GHz Simultaneous Switching Noise Coupling Using LTCC Technology
Y. W. Huang,
pp.153-155
Publication Date:2009/7/20
Online ISSN:2188-5079
Summary:
There are several components which are designed for suppressing simultaneous switching noise coupling such as power bridge, ferrite bead, and π filter, but all of them are suffered from limited bandwidth. To solve this problem, a novel structure in LTCC technology is proposed. After appropriately designing the band gap, the noise beyond the ferrite bead limit could be suppressed by this structure. The structure is composed of three unit cell, and its size is 1.2mm×3.8mm×0.728mm. The stop band is from 2GHz to 5.5GHz and is validated both by simulation and experiment. Over 40dB noise reduction could be achieved by this structure.