AlGaN/GaN dual-gate high electron mobility transistors on SiC substrates for high-power mixers

K. Shiojima, T. Makimura, T. Kosugi, S. Sugitani, N. Shigekawa, H. Ishikawa, T. Egawa

Research output: Contribution to journalArticle


We have demonstrated dual-gate AlGaN/GaN high-electron-mobility transistors on SiC substrates for high-power mixers and examined DC and up-conversion RF measurements with drain-source bias voltages (VDS) to analyze the possible output level The 0.7×300 μm-gate device exhibited the maximum transconductance of 47 mS, maximum RF power of 19.6 dBm and up-conversion gain of 11 dB at 2 GHz when VDS = 15 V. For VDS of over 15 V, the devices occasionally broke down, because, although the device can handle more drain current, but the voltage swing reached the breakdown voltage of about 30 V. These results indicate that a Watt-class output mixer can be easily achieved with this simple dual-gate structure.

Original languageEnglish
Pages (from-to)2623-2626
Number of pages4
JournalPhysica Status Solidi C: Conferences
Issue number7
Publication statusPublished - 2005 Nov 7


ASJC Scopus subject areas

  • Condensed Matter Physics

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