InAs-Channel high-electron-mobility transistors for ultralow-power low noise amplifier applications

Chia Yuan Chang*, Heng-Tung Hsu, Edward Yi Chang, Yasuyuki Miyamoto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


An InAs-channel high-electron-mobility transistor (HEMT) with an 80nm gate length for ultralow-power low-noise amplifier (LNA) applications has been fabricated and characterized on a 2-in. InP substrate. Small-signal S-parameter measurements performed on the InAs-channel HEMT at a low drain-source voltage of 0.2V exhibited an excellent fT of 120GHz and an fmax of 157 GHz. At an extremely low level of dc power consumption of 1.2mW, the device demonstrated an associated gain of 9.7 dB with a noise figure of less than 0.8 dB at 12 GHz. Such a device also demonstrated a higher associated gain and a lower noise figure than other InGaAs-channel HEMTs at extremely low dc power consumption. These results indicate the outstanding potential of InAs-channel HEMT technology for ultralow-power spacebased radar, mobile millimeter-wave communications and handheld imager applications.

Original languageEnglish
Article number04C094
JournalJapanese Journal of Applied Physics
Issue number4 PART 2
StatePublished - 1 Apr 2009

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