Parameter extraction for small‐signal model of GaN HEMTs on SiC substrates based on modified firefly algorithm. Issue 12 (22nd October 2022)

• Record Type: Journal Article
• Authors: Liu, Yuan; Cao, Fengrui; Xiong, Xiaoming; Huang, Junkai; Deng, Wanling
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 32:Issue 12(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-10-22
• Subjects: GaN HEMTs on SiC substrates -- modified firefly algorithm -- small signal model; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.23518
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: In this article, an improved firefly algorithm is proposed to extract the parameters of the small signal model of GaN HEMTs on SiC substrates. First, the initial values of the parameters are extracted directly by pinch‐off, un‐biased cold S ‐parameters and hot S ‐parameters. Second, an improved firefly algorithm is proposed to optimize parameters. Finally, in order to verify this method, the performances of traditional algorithm are compared with modified firefly algorithm in convergence speed, execution time, and accuracy, which shows that this proposed method is more suitable for the extraction of high‐dimensional parameters model.