Research On Power Integrity Technology Of The High-speed Circuit Based On Electromagnetic Periodic Structure

Nowadays, the electronic systems develop toward the direction of high speed, low voltage, and the integration of circuit is increasing. The power distribution network is an important part of high-speed circuit, its design requirements are also increasing. Hence, the design of power distribution network has become a major issue of high-speed circuit. The design of power distribution network closely related to the power integrity of high-speed circuit, the presence of a large number of simultaneous switching noise in the power distribution network causes power integrity issues which affect the performance of the system seriously. Therefore, the suppression of simultaneous switching noise is becoming the focus of study in the design of power distribution network. In recent years, because of the stop-band characteristic and easy processing characteristic, electromagnetic band gap is widely used to suppress simultaneous switching noise. Supplying electromagnetic band gap to suppress simultaneous switching noise and protect the power integrity of high-speed circuit is the subject of this dissertation. The main contents are as follows,(1)Firstly, the composition of the power distribution network and the principle of simultaneous switching noise and its main methods of suppressing are introduced.(2)Secondly, the source of EBG are introduced. Then the stop-band characteristic of EBG structure is analyzed by the equivalent circuit. And the miniaturization methods of EBG structure are introduced.(3)Thirdly, two broadband coplanar EBG structures have been designed. The new type broadband coplanar EBG has wider stopband as compared with the conventional coplanar EBG. And the partial embedded coplanar EBG broaden the stopband range, at the same time, it also effectively reduce the damage to the power plane.(4)Lastly, two EBG isolation wall are designed. They reduce the space occupied in the circuit. SSN suppression in a low frequency band can be achieved by the multi-layer mushroom EBG isolation wall. As for the mixed EBG isolation wall, its stopband range is similar to the conventional coplanar EBG structure, and the space occupied by EBG structure is greatly reduced in the horizontal direction.