Detector Systems and Sensor Technologies

Enhancing the noise performance of monolithic microwave integrated circuit-based low noise amplifiers through the use of a discrete preamplifying transistor

[+] Author Affiliations
Mark A. McCulloch

University of Manchester, Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, Oxford Road, Manchester M13 9PL, United Kingdom

Simon J. Melhuish

University of Manchester, Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, Oxford Road, Manchester M13 9PL, United Kingdom

Lucio Piccirillo

University of Manchester, Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, Oxford Road, Manchester M13 9PL, United Kingdom

J. Astron. Telesc. Instrum. Syst. 1(1), 016001 (Oct 28, 2014). doi:10.1117/1.JATIS.1.1.016001
History: Received May 29, 2014; Revised September 4, 2014; Accepted September 18, 2014
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Abstract.  An approach to enhancing the noise performance of an InP monolithic microwave integrated circuit (MMIC)-based low noise amplifiers (LNA) through the use of a discrete 100-nm gate length InP high electron mobility transistor is outlined. This LNA, known as a transistor in front of MMIC (T + MMIC) LNA, possesses a gain in excess of 40 dB and an average noise temperature of 9.4 K across the band 27 to 33 GHz at a physical temperature of 8 K. This compares favorably with 14.5 K for an LNA containing an equivalent MMIC. A simple advanced design system model offering further insights into the operation of the LNA is also presented and the LNA is compared with the current state-of-the-art Planck LFI LNAs.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Topics

Amplifiers ; Modeling

Citation

Mark A. McCulloch ; Simon J. Melhuish and Lucio Piccirillo
"Enhancing the noise performance of monolithic microwave integrated circuit-based low noise amplifiers through the use of a discrete preamplifying transistor", J. Astron. Telesc. Instrum. Syst. 1(1), 016001 (Oct 28, 2014). ; http://dx.doi.org/10.1117/1.JATIS.1.1.016001


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