Study on the fabrication of low-pass metal powder filters for use at cryogenic temperatures
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Sung Hoon | - |
dc.contributor.author | Lee, Soon-Gul | - |
dc.date.accessioned | 2021-09-03T21:36:13Z | - |
dc.date.available | 2021-09-03T21:36:13Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2016-08 | - |
dc.identifier.issn | 0374-4884 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/87992 | - |
dc.description.abstract | We fabricated compact low-pass stainless-steel powder filters for use in low-noise measurements at cryogenic temperatures and investigated their attenuation characteristics for different wire lengths, filter shapes, and preparation methods at frequencies up to 20 GHz. We used nominally 30-mu m-sized SUS 304L powder and mixed it with Stycast 2850FT (Emerson and Cumming) with catalyst 23LV. A 0.1-mm insulated copper wire was wound on preformed powder-mixture spools in the shape of a right-circular cylinder, a flattened elliptic cylinder and a toroid, and the coils were encapsulated in metal tubes or boxes filled with the powder mixture. All the fabricated powder filters showed a large attenuation at high frequencies with a cut-off frequency near 1 GHz. However, the toroidal filter showed prominent ripples corresponding to resonance modes in the 0.5-m-long coil wire. A filter with a 2:1 powder/epoxy mixture mass ratio and a wire length of 1.53 m showed an attenuation of -93 dB at 4 GHz, and the attenuation was linearly proportional to the wire's length. As the powder-to-epoxy ratio was increased, the high-frequency attenuation increased. An equally-spaced single-layer coil structure was found to be more efficient in attenuation than a double-layer coil. The geometry of the metal filter's case affected the noise ripples, with the least noise being found for a circular tube. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | KOREAN PHYSICAL SOC | - |
dc.subject | DEVICES | - |
dc.title | Study on the fabrication of low-pass metal powder filters for use at cryogenic temperatures | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Soon-Gul | - |
dc.identifier.doi | 10.3938/jkps.69.272 | - |
dc.identifier.scopusid | 2-s2.0-84982255170 | - |
dc.identifier.wosid | 000382001300003 | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.69, no.3, pp.272 - 276 | - |
dc.relation.isPartOf | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | - |
dc.citation.title | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | - |
dc.citation.volume | 69 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 272 | - |
dc.citation.endPage | 276 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.identifier.kciid | ART002133421 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Multidisciplinary | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordAuthor | Attenuation measurement | - |
dc.subject.keywordAuthor | Microwave filters | - |
dc.subject.keywordAuthor | Metal powder | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.