Power noise suppression using dual spiral resonator with modified ground clearance for high-speed PCB

摘要

In this paper, to the aim of 3.2 GHz noise suppression band with small area, investigation of several modified ground structure (MGS) dual spiral resonators are applied in the vicinity of the DDR3 high-speed circuit. Using two-turn dual spiral resonator, the area of the spiral on a power distribution network (PDN) is decreased to 45% compared with four-turn single spiral resonator and to achieve wider noise suppression frequency band, MGS dual spiral resonator, which make higher self resonance frequency (SRF) and inductance value, are applied. The proposed dual spiral resonator with MGS has 8 to 19 dB power noise suppression characteristic from second to fourth harmonic frequency band. By applying this concept, power noise suppression can be guaranteed with small area for various applications of the more high-speed digital circuits such as USB 3.0, SATA 3.0 or etc.