Wide Band Equivalent Circuit Model for RF Spiral Inductors

• Main Authors: Hong, Ruei-Fong, 洪瑞豐
• Other Authors: 蔡友遜
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/13887614458484020467

碩士 === 正修科技大學 === 電子工程研究所 === 97 === Following the improvement in the manufacturing techniques of radio-frequency integrated circuits (RFICs) nowadays, more functional circuits can already be integrate into a single RF system package. Due to the increase in operating frequency, the operations and features of RFICs will suffer perturbations more from various complicated high-frequency parasitic and electromagnetic (EM) effects. In these design conditions, only accurate broadband models can provide the accurate circuit analysis for circuit designers to design a circuit conforming to the specifications. This study used numerical analysis and microwave network analysis to develop model extraction procedure and further to provide fully-analytical mathematical extraction formula to be applied in spiral inductor. Through model simplification and composition-decomposition techniques, the complexity of the extraction approach can be simplified and the requirement of computational resources can also be reduced. As a result, a broadband T- or PI-equivalent circuit model compatible with SPICE simulators can rapidly and accurately be constructed. Experimental samples used several spiral inductors as the type of embedded in organic laminate substrate and fabricated using Si-based CMOS process. Through the comparisons of the simulated and measured results, the proposed modeling approach proved to possess the characteristics of broadband and accuracy.