| Summary: | 碩士 === 國立臺灣大學 === 電信工程學研究所 === 95 === This thesis focuses on the isolation of power/ground bounce noise (P/GBN) and suppression of simultaneous switching noise (SSN) in high-speed circuits. A hybrid photonic crystal power/ground layer (H-PCPL) is proposed to efficiently eliminate the noise. Based on the previous PCPL design, we use two kinds of photonic crystals to synthesis several bandgaps to form a continuously broad bandgap. A sequence of designing photonic bandgaps is investigated; first we fix the radius of the dielectric discs and vary the lattice constant, which can enhance the photonic bandgap but could not get a continuous stopband. Then we use two types of dielectric discs with different radii. The bandgaps can compensate each other and get a continuous stopband ranging from 3 to 9.6 GHz. Real-frequency gapmap is used here to analyze and estimate the bandgap structure, for the hybrid PCPL. H-PCPL are fabricated on Rogers/RT Duroid 5880 and good agreement is shown between the measurement and simulation results. Two noise isolation structure, H-PCPL and the conventional split power plane, are compared here, and the H-PCPL shows better signal integrity performance than the split power plane besides wider stopband for noise isolation. Demonstration of noise isolation on digital circuits is shown in the last section.
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