title: Note: Ultra-high frequency ultra-low dc power consumption HEMT amplifier for quantum measurements in millikelvin temperature range.
abstract: We have presented theory and experimentally demonstrated an efficient method for drastically reducing the power consumption of the rf/microwave amplifiers based on HEMT in unsaturated dc regime. Conceptual one-stage 10 dB-gain amplifier showed submicrowatt level of the power consumption (0.95 μW at frequency of 0.5 GHz) when cooled down to 300 mK. Proposed technique has a great potential to design the readout amplifiers for ultra-deep-cooled cryoelectronic quantum devices.
authors.affiliation: Institute of Radio Astronomy, NAS of Ukraine, Kharkov, Ukraine. korol@rian.kharkov.ua
authors.forename: A M
authors.initials: AM
authors.lastname: Korolev
authors.forename: V I
authors.initials: VI
authors.lastname: Shnyrkov
authors.forename: V M
authors.initials: VM
authors.lastname: Shulga