Journal of the Korean Institute of Telematics and Electronics S (전자공학회논문지S)
- Volume 34S Issue 11
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- Pages.34-42
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- 1997
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- 1226-5837(pISSN)
An optimal structure of impedance control in high density layout in a high multilayer PCB
박판화된 고다층기판에서 고밀도 배선의 임피던스 제어 최적 구조
Abstract
In this paper, we show an optimal structure of impedance control in high density layouts ina high multilayers PCB. The impedance control in a high multilayers FR-4 PCB is very portant isue because a dielectric layer's thickness is very thin. Especially, odd mode impedance control is more difficult than characteristic impedance control in high multilayers PCB. So, we show an optimal structure of odd mode impedance control in that dielectric thickness is about 0.1mm with limited state and discuss multilayers PCB's for swich circuti pack and backplane in developing algorith scale ATM witching system in next time.
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