The effects of a ground shield on the characteristics and performance of spiral inductors

被引：81

作者：

Yim, SM ^{[1
]}

Chen, T ^{[1
]}

O, KK ^{[1
]}

机构：

[1] Univ Florida, Dept Elect & Comp Engn, Silicon Microwave Integrated Circuits & Syst Res, Gainesville, FL 32611 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2002年 / 37卷 / 02期

关键词：

distributed system; frequency dependence; isolation; spiral inductor;

D O I：

10.1109/4.982430

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The frequency dependence of the model parameters of patterned ground shield (PGS) inductors in large part is explained as a consequence of modeling a distributed system with a lumped model. The effects of PGS shape and material on inductor characteristics have been examined and explained. There is an optimum area for a PGS to maximize Q. Using an n(+) buried/n-well PGS, the peak Q is improved by similar to25% from that of an inductor without a PGS while only slightly changing L and C, in comparison to inductors with other PGSs. Having a PGS does not significantly improve isolation between adjacent inductors when isolation is limited by magnetic coupling since a PGS is specifically designed to limit termination of magnetic fields.

引用

页码：237 / 244

页数：8

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