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

Abstract

The invention discloses a power distribution network based on a plane hybrid-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 plane hybrid-bridge electromagnetic band gap structure unit is provided with four S-type bridges, two of the four S-type bridges are S1-type bridges connected with two longitudinally-adjacent pasters, and the other two of the four S-type bridges are S2-type bridges connected with two transversely-adjacent pasters. According to the power distribution network, the plane hybrid-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 hybrid bridge electromagnetic bandgap structure. Background technique [0002] In contemporary digital systems with high speed, high density, high power consumption, low voltage and high current, the simultaneous switching noise (Simultaneous Switching Noise, SSN) caused by high-speed transient current is coupled to the system power distribution network (Power Distribution Network, PDN) ), and propagates in the parallel plate waveguide composed of the power / ground plane pair of the power distribution network, which excites the plane resonance, causes serious power integrity (Power Integrity, PI) problems, and finally causes signal integrity (Signal Integrity , SI) and electromagnetic interference (Electro-Magnetic Interference, EMI) and other problems affect the signal quality of the electronic system, and even ...

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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