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Journal articles
Development of ultra-low noise HEMTs for cryoelectronics at <= 4.2 k
Abstract : We report on DC and noise characteristics at 4.2 K of High Electron Mobility Transistors (HEMTs) which have been realized at LPN/CNRS. This work is aimed to develop high performance, low-power, low-frequency noise and low-temperature field-effect transistors for the future cryoelectronics. A high quality two-dimensional electron gas (2DEG) based on AlGaAs/GaAs heterostructure has been used to realize appropriately designed HEMTs with different gate configurations. With these transistors, we have obtained, for example, a transconductance of about 100 mS and a voltage gain of 26 with a power dissipation of less than 100 mu W at 4.2 K; and a corresponded equivalent input voltage noise of 1.2 nV/Hz(1/2) at 1 kHz and as low as 0.12 nV/Hz(1/2)s at 100 kHz.
http://hal.in2p3.fr/in2p3-00825472
Contributor : Christine Hadrossek <>
Submitted on : Thursday, May 23, 2013 - 5:09:29 PM
Last modification on : Wednesday, September 16, 2020 - 5:43:29 PM
Contributor : Christine Hadrossek <>
Submitted on : Thursday, May 23, 2013 - 5:09:29 PM
Last modification on : Wednesday, September 16, 2020 - 5:43:29 PM