標題: Accurate Systematic Model-Parameter Extraction for On-Chip Spiral Inductors
作者: Chen, Hao-Hui
Zhang, Huai-Wen
Chung, Shyh-Jong
Kuo, Jen-Tsai
Wu, Tzung-Chi
電信工程研究所
Institute of Communications Engineering
關鍵字: Inductor model;parameter extraction;spiral inductors
公開日期: 1-Nov-2008
摘要: A systematic model-parameter-extraction technique is presented for accurately modeling on-chip spiral inductors in radio frequency integrated circuits (RFICs). The model is a pi-circuit with an additional parallel RC network connecting both vertical branches to account for substrate coupling. The extraction starts with extracting the series inductance and resistance at low frequencies. Then, the oxide capacitance is evaluated in an intermediate frequency range. Afterward, the substrate effects including the substrate resistance and capacitance, as well as coupling, are extracted at higher frequencies. All the lumped circuit element values are analytically determined by the network analysis from the measured network parameters (S- or Y-parameters). The proposed approach thus can provide better circuital interpretations of the inductor behaviors for facilitating the design of RFIC inductors. Square and circular CMOS spiral and octagonal BiCMOS7 spiral inductors are investigated to test this technique. Highly accurate frequency responses by the extracted parameters are obtained over a wide frequency band without any optimization. This reveals the validation and capability of the proposed parameter-extraction method.
URI: http://dx.doi.org/10.1109/TED.2008.2005131
http://hdl.handle.net/11536/8173
ISSN: 0018-9383
DOI: 10.1109/TED.2008.2005131
期刊: IEEE TRANSACTIONS ON ELECTRON DEVICES
Volume: 55
Issue: 11
起始頁: 3267
結束頁: 3273
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