Analysis and modeling of on-chip transformers under two ground conditions

作者：Wei Jiaju Wang Zhigong Li Zhiqun Tang Lu Institute of RF & OE ICs Southeast University Nanjing China

来源：半导体学报, 2012, (06): 109-113.

• transformer
• model
• equivalent circuit
• ground
• on-chip
• RFIC

<正>Two fabricated on-chip transformers under different ground conditions(i.e.,CG and IG types) have been measured to compare their different characteristics.With the aid of the electromagnetic(EM) solver,we have analyzed the differences from the electric and magnetic aspects,and different effects in these aspects can be described with the lumped capacitor and inductor from the perspective of the equivalent circuit model.A physicsbased equivalent circuit model is proposed to model transformers under different ground conditions.In addition, the simple parameter extraction procedure for the corresponding model is also provided.All the model parameters are extracted and agree with the analysis.In order to verify the model’s validity and accuracy,we have compared the modeled and measured S-parameters,and an excellent agreement has been found over a broad frequency range.

• 出版日期2012-6-15
• 单位东南大学