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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zannoni, M. Gervasi, M. Bau, A. Passerini, A. |
| Copyright Year | 2013 |
| Description | Author affiliation: Dipt. di Fis., Univ. di Milano Bicoc-ca, Milan, Italy (Zannoni, M.; Gervasi, M.; Bau, A.; Passerini, A.) |
| Abstract | State of the art instruments for astrophysics in the millimeter and submillimeter domain adopt cryogenic front-ends. Temperatures in the range 4-20 K are necessary to almost nullify the thermal noise from lossy passive components and operate low noise amplifiers in their proper regime. Extremely high accuracy in the control of systematics is an unavoidable step towards the realization of ultra high sensitive instrumentation. For this reason a corresponding precision must be used in the characterization of the cryogenic front-end key components like feed horns, phase shifters, orthomode transducers and amplifiers. In this contribution we give a detailed description of the cryogenic set-up we have realized in our microwave lab to characterize at ultra low temperature (4 K) by means of a VNA both active and passive devices. |
| Starting Page | 113 |
| Ending Page | 116 |
| File Size | 4016234 |
| Page Count | 4 |
| File Format | |
| e-ISBN | 9781467357074 |
| DOI | 10.1109/ICEAA.2013.6632200 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-09-09 |
| Publisher Place | Italy |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Microwave measurement Cryogenics Transmission line measurements Calibration Copper Standards |
| Content Type | Text |
| Resource Type | Article |
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