Noise Suppression Methods Using Spiral with PGS in PCB

Tong-Ho CHUNG  Jong-Gwan YOOK  

IEICE TRANSACTIONS on Electronics   Vol.E96-C   No.5   pp.752-754
Publication Date: 2013/05/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E96.C.752
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Electronic Circuits
inductance,  pattern ground structure (PGS),  self resonance frequency (SRF),  spiral inductor,  

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In this paper, several spiral inductors with various ground clearance structures and turns were investigated to achieve noise suppression up to the fourth harmonic (3.2 GHz) regime of DDR3-1600. Their performances were characterized in terms of their capability to effectively suppress simultaneous switching noise (SSN) in the frequency region of interest. For a wider noise suppression bandwidth, a spiral inductor with large ground clearance, which provides a high self resonance frequency (SRF) as well as high inductances, was implemented. The proposed spiral inductor exhibited good noise suppression characteristics in the frequency domain and achieved 50% voltage fluctuation reduction in the time domain, compared to the identical 4-turn spiral without pattern ground structure.