Cryogenic Broadband Ultra-Low-Noise MMIC LNAs for Radio Astronomy Applications
Artikel i vetenskaplig tidskrift, 2013

0.5–13 and 24–40 GHz broadband cryogenic monolithic- microwave integrated-circuit low-noise amplifiers (LNAs) have been designed and fabricated using a 130-nm InP HEMT process. Packaged LNAs have been measured at both 300 and 15 K. At 300 K, the measured minimum noise temperature of the 0.5–13-GHz LNA was 48 K at 7 GHz with a gain between 34–40 dB. At 15 K, the measured minimum noise temperature was 3 K at 7 GHz and below 7 K within the entire 0.5–13-GHz band with a gain between 38–44 dB. The 24–40-GHz LNA exhibited a lowest noise temperature of 110 K and an average of 125 K with again of more than 27.5 dB at 300 K. When cooled down to 15 K,the noise temperature dropped to a minimum of 10 K and average of 13.2 K with a gain of 28 dB. The results are of large interest for radio astronomy applications where large bandwidth and low noise figure in the receivers are key figures in the system design.

monolithic microwave integrated circuit (MMIC)

cryogenic

InP HEMT

low-noise amplifier (LNA)

Broadband amplifiers

Författare

Joel Schleeh

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

GigaHertz Centrum

Niklas Wadefalk

GigaHertz Centrum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Per-Åke Nilsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

GigaHertz Centrum

Piotr Starski

GigaHertz Centrum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Jan Grahn

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

GigaHertz Centrum

IEEE Transactions on Microwave Theory and Techniques

0018-9480 (ISSN)

Vol. 61 2 871-877

Styrkeområden

Informations- och kommunikationsteknik

Drivkrafter

Innovation och entreprenörskap

Infrastruktur

Nanotekniklaboratoriet

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/TMTT.2012.2235856