Spiral inductance calculation and the study of inductors with PGS in multilayer dielectric

• Main Authors: Tian-Bin Lin, 林天斌
• Other Authors: Hsin-Chia Lu
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/81205720004826699484

碩士 === 國立臺灣大學 === 電子工程學研究所 === 96 === The first part of this thesis shows the method of calculating the inductance of a rectilinear inductor, since in RF design, on-chip inductor is one of the critical components that dominates the overall performance of the RF devices, thus how to calculate the inductance accurately and immediately becomes an important research topic in this field. In order to calculate inductance as precise as possible, the electrical characteristics of an inductor are carefully analyzed and the loss mechanisms are taken into account. With the proper inductor equivalent circuit and partial element equivalent circuit (PEEC) method, we developed a simulation engine which is capable to predict the inductance and Q-value of an inductor. The second part of this thesis presents the effects on spiral inductors and coupled inductors with the presence of a patterned ground shield (PGS). Inserting a PGS between inductor and substrate eliminates both electric and magnetic couplings to the substrate, and thus enhances the performance of the inductors. Therefore, we would like to study the characteristics of applying various PGS shapes on the spiral inductors and further on the coupled inductors. In this thesis, five PGS structures are used on spiral inductor and six PGS structures are used on the coupled inductors.