Striped-Channel Low-Noise Pseudomorphic HEMT

Hisao KAWASAKI, Hiroshi ISHIMURA, Hirokuni TOKUDA

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Summary :

Striped-channel low-noise AlGaAs/InGaAs pseudomorphic HEMTs with various stripe pitches have been developed. The DC and microwave characteristics have been investigated and compared to those of non-striped AlGaAs/InGaAs pseudomorphic HEMTs. It was found that both striped and non-striped HEMTs showed nearly constant noise figure for VDS1.0-3.0 V, in contrast to the case of AlGaAs/GaAs HEMTs. This suggests that in the case of AlGaAs/InGaAs pseudomorphic HEMTs, that short-channel effect is almost suppressed even in the non-striped structure. A relatively low noise figure of 0.53 dB with a high associated gain of 13.5 dB has been obtained at 18 GHz from the 0.4 µm-pitch striped-channel pseudomorphic HEMT.

Publication
IEICE TRANSACTIONS on Electronics Vol.E74-C No.12 pp.4110-4113
Publication Date
1991/12/25
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Issue on Millimeter-Wave/Heterojunction Devices)
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