INSTITUTIONAL DIGITAL REPOSITORY

A cryogenic front-end preamplifier operating at 120 K for bolometric detector

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dc.contributor.author Reza, A.
dc.contributor.author Vatsa, V.
dc.contributor.author Pose, M.S.
dc.contributor.author Mazumdar, A.
dc.contributor.author Garai, A.
dc.contributor.author Krishnamoorthy, H.
dc.contributor.author Gupta, G.
dc.contributor.author Nanal, V.
dc.contributor.author Pillay, R.G.
dc.contributor.author Shrivastava, A.
dc.date.accessioned 2020-03-16T11:38:46Z
dc.date.available 2020-03-16T11:38:46Z
dc.date.issued 2020-03-16
dc.identifier.uri http://localhost:8080/xmlui/handle/123456789/1541
dc.description.abstract In this paper, the design and test results of a front-end cryogenic amplifier for a bolometer detector are presented. The amplifier is implemented with two low-noise Si JFETs, where the first FET is configured as a source follower amplifier and the second FET provides a high dynamic resistance to keep the voltage gain very close to unity. A 3 dB bandwidth over a wide range from DC to 10 MHz is achieved in this design. The input voltage noise density is ~ 1.9 nV/√Hz at 300 K, which further reduces to 1.6 nV/√Hz at 120 K. The flicker corner frequency observed is below 50 Hz. en_US
dc.language.iso en_US en_US
dc.subject Cryogenic amplifier en_US
dc.subject Bolometer detector en_US
dc.subject Low-noise amplifier en_US
dc.title A cryogenic front-end preamplifier operating at 120 K for bolometric detector en_US
dc.type Article en_US


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