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VSI-EBG Structure for Common-mode Noise Suppression in High-speed Differential Signals
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- Authors
- Kim Myunghoi, Kim Sukjin, Kim Hongseok, Kim Joungho, Kim Jaehoon
- Issue Date
- 2013-05
- Citation
- Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC) 2013, pp.1-4
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, we present the wideband common-mode noise suppression using a vertical stepped impedance electromagnetic bandgap (VSI-EBG) structure for high-speed differential signals in a multi-layer PCB. The dispersion equations for the bandgap prediction are extracted using the equivalent circuit model. Based on the equations, it is thoroughly examined the effects of the impedance ratio, the EBG patch length, via inductances on the stopband bandwidth. The results of the proposed equations show a good agreement with the fullwave simulation results. It is experimentally verified that the proposed VSI-EBG structure suppresses the CM noise over the wideband frequency range without degrading the differential characteristics.
- KSP Keywords
- CM noise, Common-mode noise suppression, Differential characteristics, Dispersion equations, EBG structure, Electromagnetic BandGap(EBG), Frequency Range, Full-wave simulation, High Speed, Impedance ratio, Multilayer PCB