Partial EBG Structure with DeCap for Ultra-Wideband Suppression of Simultaneous Switching Noise in a High-Speed System

To supply a power distribution network with stable power in a high-speed mixed mode system, simultaneous switching noise caused at the multilayer PCB and package structures needs to be sufficiently suppressed. The Uniplanar Compact Electromagnetic BandGap (UC-EBG) structure is well known as a promising solution to suppress the power noise and isolate noise-sensitive analog/RF circuits from a noisy digital circuit. However, a typical UCEBG structure has several severe problems, such as a limitation in the stop band's lower cutoff frequency and signal quality degradation.