Design, simulation and measurement techniques for embedded decoupling capacitors in multi-GHz packages/PCBs
Embedded capacitor is a better solution than surface mount capacitors for decoupling in a high speed, high performance packages/PCBs. Our study has showed that with conventional approaches, the embedded capacitor for decoupling in power delivering network can work from 100 MHz to 1 GHz systems. Pushing the operating frequency over 1 GHz is a challenge for system designers. This paper discusses the embedded decoupling capacitor design for multi-GHz systems through principles, simulation, measurement error, and error elimination.
A study on the characterization of quasi-three-dimensional PN junction capacitor
This paper discusses a novel quasi-three-dimensional PN Junction capacitor, which has a high density of capacitance (200nF/cm2) with a relatively high working frequency (3GHz). These properties are because of its unique trench structure. To identify the performance of this kind of capacitor, some tests were carried out at both low frequency and high frequency. Moreover, a typical power supply filter network was designed to compare the embedded capacitor with a commercial 2nF SMD 0402 capacitor.
Simulation of switching noise in multi-layer structures using generalized transmission line equation method
This paper discusses the use of the generalized transmission line equations (GTLE) for the simulation of switching noise distribution in multi-layered packaging structures. After a brief discussion on the formulation and its application to a simple dual trace transmission line, two-layered plane and two-layered plane with four drivers and traces, the method has been applied to a complicated fourteen layer structure which consists of the package and board power distribution. This structure includes nonideal decoupling capacitors placed on the package/board, vias connecting the planes, drivers and traces. This paper demonstrates the advantage of the GTLE method over SPICE in terms of efficiency and accuracy. In addition, this paper provides insight into the noise mechanism arising in multi-layered power distribution networks.