Design of cryogenic 700 MHz HEMT amplifier

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2004
Major/Subject
Mcode
Degree programme
Language
en
Pages
1-18
Series
Cryogenics, Volume 44, Issue 11
Abstract
We present a way to design a high-frequency low-temperature pHEMT-based balanced amplifier. The design is based on measured cryogenic S-parameters combined with a small-signal noise model. Using the design process we constructed an amplifier that was measured to have a gain of 16 dB and a noise temperature of ∼3 K when cooled to 4.2 K.
Description
Keywords
low-noise amplifiers, HEMT, cryoelectronics, RF applications
Other note
Citation
Roschier, Leif & Hakonen, Pertti J. 2004. Design of cryogenic 700 MHz amplifier. Cryogenics. Volume 44, Issue 11. 783-788. ISSN 0011-2275 (printed). DOI: 10.1016/j.cryogenics.2004.04.006