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Ultra-low loss lumped element cryogenic coolable high pass filter and cryogenic measurement method
Liu, Hongfei1,2; Weinreb, Sander3
2017-09-01
Source PublicationMICROWAVE AND OPTICAL TECHNOLOGY LETTERS
Volume59Issue:9Pages:2229-2235
AbstractThis letter presents an ultra-low loss cryogenically-coolable lumped element high pass filter and the measurement method of its S parameters and noise temperature at cryogenic temperature. This filter is going to be used in RFI mitigation of FAST wideband single pixel receiver. It adopts 5 poles Chebyshev high pass structure, and ultra-low loss lumped elements are employed. At cryogenic temperature, its 3 dB cutoff frequency is 248 MHz and the high-end of passband with ultra-low insertion loss is up to 3.5 GHz. Specially, the novel mechanical and microwave design ensure effectively cryogenic cooling to all components of the filter. This filter can be operated at temperatures of 300-4 K. S parameters are measured at room and cryogenic temperatures. At 26 K, its insertion loss in passband is smaller than 0.1 dB. A direct measurement to noise temperature at 24 K physical temperature is performed in cryogenic Testing Dewar, and noise temperature smaller than 0.55 K is achieved. The stopband rejection at 95 MHz is larger than 43 dB. In passband, the return loss of 2 ports is larger than 23 dB.
SubtypeArticle
KeywordHigh Pass Filter Ultra-low Loss Cryogenic Cooling Cryogenic Measurement
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
Funding OrganizationState Key Development Program for Basic Research of China(2012CB821806 ; State Key Development Program for Basic Research of China(2012CB821806 ; National Natural Science Foundation of China(10173015) ; National Natural Science Foundation of China(10173015) ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; 2013C B837900) ; 2013C B837900) ; State Key Development Program for Basic Research of China(2012CB821806 ; State Key Development Program for Basic Research of China(2012CB821806 ; National Natural Science Foundation of China(10173015) ; National Natural Science Foundation of China(10173015) ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; 2013C B837900) ; 2013C B837900)
DOI10.1002/mop.30718
Indexed BySCI
Language英语
Funding OrganizationState Key Development Program for Basic Research of China(2012CB821806 ; State Key Development Program for Basic Research of China(2012CB821806 ; National Natural Science Foundation of China(10173015) ; National Natural Science Foundation of China(10173015) ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; 2013C B837900) ; 2013C B837900) ; State Key Development Program for Basic Research of China(2012CB821806 ; State Key Development Program for Basic Research of China(2012CB821806 ; National Natural Science Foundation of China(10173015) ; National Natural Science Foundation of China(10173015) ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; 2013C B837900) ; 2013C B837900)
WOS Research AreaEngineering ; Optics
WOS SubjectEngineering, Electrical & Electronic ; Optics
WOS IDWOS:000404366000024
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8819
Collection射电天文研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 21008, Jiangsu, Peoples R China
3.CALTECH, Pasadena, CA 91125 USA
Recommended Citation
GB/T 7714
Liu, Hongfei,Weinreb, Sander. Ultra-low loss lumped element cryogenic coolable high pass filter and cryogenic measurement method[J]. MICROWAVE AND OPTICAL TECHNOLOGY LETTERS,2017,59(9):2229-2235.
APA Liu, Hongfei,&Weinreb, Sander.(2017).Ultra-low loss lumped element cryogenic coolable high pass filter and cryogenic measurement method.MICROWAVE AND OPTICAL TECHNOLOGY LETTERS,59(9),2229-2235.
MLA Liu, Hongfei,et al."Ultra-low loss lumped element cryogenic coolable high pass filter and cryogenic measurement method".MICROWAVE AND OPTICAL TECHNOLOGY LETTERS 59.9(2017):2229-2235.
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