A Novel Electromagnetic Bandgap Power Plane Etched With Multiring CSRRs for Suppressing Simultaneous Switching Noise
Abstract: A novel electromagnetic bandgap (EBG) power plane etched with multiring complementary split ring resonators (CSRRs) is proposed for effectively suppressing simultaneous switching noise. Its equivalent circuit model is derived for predicting its bandwidth numerically. The measured insertion losses, i.e., S21-parameters of the two fabricated samples agree well with the simulated ones obtained by using the commercial software HFSS, respectively. It is shown that -40 dB suppression is achieved over an ultrawideband from 600 MHz to 13.26 GHz, when the two-ring CSRRs EBG power plane is used. While for four-ring CSRRs EBG case, the suppression level can be extended to -60 dB. Comparative studies are also performed on the signal integrity of a pair of differential transmission lines over L-bridge EBG with and without CSRRs, respectively, and similar performance is achieved.
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