Design of Flipped Stepped-Impedance-Resonator Electromagnetic Bandgap Structure and Position Optimization for Noise Suppression

• Main Authors: Yu-Cong Wang, 汪餘聰
• Other Authors: Ruey-Beei Wu
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/5zrvej

碩士 === 國立臺灣大學 === 電信工程學研究所 === 107 === To tackle the Power Integrity (PI) and Electromagnetic Compatibility (EMC) problems, this thesis proposes a novel FSIR non-periodic EBG structure and its 2 × 2 optimal combination which can be applied to 2-layers PCB. Their equivalent circuit are also derived. This structure can suppress both of 2.3-2.4 GHz and 5~6 GHz bands at the same time, with suppression level -30 dB and -50 dB, respectively. Secondly, utilize the dispersion diagram to optimize the design parameters and estimate the stopband. Finally, a simple method of suppression contour map is proposed to analyze position optimization of the structures. Six 2 × 2 combinations can suppress the noise propagation in two stopbands by 5-10 dB, and measurements are carried out by using VNA and SQA. Both simulation and experimental results are used to validate the method. Besides, the design rule and the theory are also discussed in detail.