Gain and Noise in THz MgB2 Hot-Electron Bolometer Mixers With a 30-K Critical Temperature
Artikel i vetenskaplig tidskrift, 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.

Författare

Evgenii Novoselov

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Serguei Cherednichenko

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

IEEE Transactions on Terahertz Science and Technology

2156-342X (ISSN)

Vol. 7 704-710

Infrastruktur

Kollberglaboratoriet

Nanotekniklaboratoriet

Styrkeområden

Nanovetenskap och nanoteknik

Materialvetenskap

Ämneskategorier

Annan elektroteknik och elektronik

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DOI

10.1109/TTHZ.2017.2760105