標題: A novel approach for parameter determination of HBT small-signal equivalent circuit
作者: Chen, HY
Chen, KM
Huang, GW
Chang, CY
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: HBT's;small signal modeling;T-topology;hybrid-pi equivalent circuit
公開日期: 1-Jun-2005
摘要: Direct parameter extraction is believed to be the most accurate method for equivalent-circuits modeling of heterojunction bipolar transistors (HBT's). Using this method, the parasitic elements, followed by the intrinsic elements, are determined analytically. Therefore, the quality of the extrinsic elements extraction plays an important role in the accuracy and robustness of the entire extraction algorithm. This study proposes a novel extraction method for the extrinsic elements, which have been proven to be strongly correlated with the intrinsic elements. By utilizing the specific correlation. the equivalent circuit modeling is reduced to an optimistation problem of determining six specific extrinsic elements. Converting the intrinsic equivalent circuit into its common-col lector configuration, all intrinsic circuit elements are extracted using exact closed-form equations for both the hybrid-pi and the T-topology equivalent circuits. Additionally, a general explicit equation on the total extrinsic elements is derived, subsequently reducing the number of optimization variables. The modeling results are presented, showing that the proposed method can yield a good fit between the measured and calculated S parameters.
URI: http://dx.doi.org/10.1093/ietele/e88-c.6.1133
http://hdl.handle.net/11536/13587
ISSN: 0916-8524
DOI: 10.1093/ietele/e88-c.6.1133
期刊: IEICE TRANSACTIONS ON ELECTRONICS
Volume: E88C
Issue: 6
起始頁: 1133
結束頁: 1141
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