Gain and Noise in THz MgB2 Hot-Electron Bolometer Mixers With a 30-K Critical Temperature
Journal article, 2017

In this paper, we study variation of the MgB2 hot-electron bolometer mixer characteristics such as noise temperature, gain, output noise, and local oscillator (LO) power at 5-, 15-, and 20-K bath temperatures, and at 0.69- and 1.63-THz LO frequencies. The main reason for the noise temperature rising at higher temperatures is a reduction of the mixer gain, which occurs proportionally to the LO power reduction. Contrary to this, the output noise remains constant (for the same bias point).

superconductivity

mixer

magnesium diboride

hybrid physical chemical vapor deposition (HPCVD)

Hot-electron bolometer (HEB)

thin film.

Author

Evgenii Novoselov

Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory

Serguei Cherednichenko

Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory

IEEE Transactions on Terahertz Science and Technology

2156-342X (ISSN)

Vol. 7 6 704-710

Infrastructure

Kollberg Laboratory

Nanofabrication Laboratory

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Materials Science

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

Condensed Matter Physics

DOI

10.1109/TTHZ.2017.2760105

More information

Created

10/25/2017