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Channel Temperature Model for Microwave Algan/Gan Hemts on Sic and Sapphire Mmics in High Power, High Efficiency Sspas

by Nasa Technical Reports Server (Ntrs) , Jon C. Freeman
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Current price ₹1,337.00
Original price ₹1,446.00
Original price ₹1,446.00
Original price ₹1,446.00
(-8%)
₹1,337.00
Current price ₹1,337.00

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Book cover type: Paperback
  • ISBN13: 9781287269083
  • Binding: Paperback
  • Subject: N/A
  • Publisher: Bibliogov
  • Publisher Imprint: Bibliogov
  • Publication Date:
  • Pages: 24
  • Original Price: USD 14.75
  • Language: English
  • Edition: N/A
  • Item Weight: 64 grams
  • BISAC Subject(s): General

A key parameter in the design trade-offs made during AlGaN/GaN HEMTs development for microwave power amplifiers is the channel temperature. An accurate determination can, in general, only be found using detailed software; however, a quick estimate is always helpful, as it speeds up the design cycle. This paper gives a simple technique to estimate the channel temperature of a generic microwave AlGaN/GaN HEMT on SiC or Sapphire, while incorporating the temperature dependence of the thermal conductivity. The procedure is validated by comparing its predictions with the experimentally measured temperatures in microwave devices presented in three recently published articles. The model predicts the temperature to within 5 to 10 percent of the true average channel temperature. The calculation strategy is extended to determine device temperature in power combining MMICs for solid-state power amplifiers (SSPAs).

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