Power distribution network based on plane C-type bridge electromagnetic band gap structure

Abstract

The invention discloses a power distribution network based on a plane C-type bridge electromagnetic band gap structure. The power distribution network comprises a power plane, a dielectric substrate and a ground plane, wherein the power plane, the dielectric substrate and the ground plane are sequentially arranged. The power plane comprises an electromagnetic band gap structure unit matrix. Each electromagnetic band gap structure unit is of a central symmetry structure and provided with four C-type bridges in a led mode, the four C-type bridges are connected with four adjacent electromagnetic band gap structure units respectively, and the two ends of any C-type bridge are connected to the opposite sides of two adjacent electromagnetic band gap structure units respectively. According to the power distribution network, the plane C-type bridge electromagnetic band gap structure units are periodically carved in the power plane of the power distribution network, simultaneous switching noise between the power plane and the ground plane in the power distribution network can be suppressed within a wide frequency range, and the good power integrity of a system can be obtained.

Description

technical field [0001] The invention relates to the field of high-speed circuit microwave technology, in particular to a power distribution network based on a planar C-type bridge electromagnetic bandgap structure. Background technique [0002] In contemporary high-speed, high-density, high-power, low-voltage and high-current digital systems, the simultaneous switching noise (SSN) caused by high-speed transient currents is coupled to the system power distribution network (PDN). ) inside the power distribution network and propagate in the parallel-plate waveguide formed by the power / ground plane pair of the power distribution network, excite the plane resonance, cause serious power integrity (PI) problems, and eventually lead to signal integrity (Signal Integrity) , SI) and electromagnetic interference (Electro-Magnetic Interference, EMI) and other issues, affect the signal quality of the electronic system, and even cause the system to not work properly. Power integrity, esp...

AI Technical Summary

Problems solved by technology

However, in typical planar EBG structures, such as L-bridged EBG structures, S-bridged EBG structures, and LBS-EBG structures, either the stopband width is very limited, or the low-frequency cut-off frequency is high, which is synchronous in high-speed digital circuits. The performance in terms of switching noise suppression needs to be further improved

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