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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Information Science and Technology / Faculty of Information Science and Technology >
Peer-reviewed Journal Articles, etc >
Cryogenic receiver front-end with sharp skirt characteristics
| Title: | Cryogenic receiver front-end with sharp skirt characteristics |
| Authors: | Narahashi, S. Browse this author | | Satoh, K. Browse this author | | Kawai, K. Browse this author | | Koizumi, D. Browse this author | | Nojima, T. Browse this author →KAKEN DB |
| Keywords: | PHYSICS | | PHYSICS, APPLIED | | CONDENSED MATTER |
| Issue Date: | May-2006 |
| Publisher: | IOP Publishing |
| Journal Title: | Superconductor Science and Technology |
| Volume: | 19 |
| Issue: | 5 |
| Start Page: | S416 |
| End Page: | S422 |
| Publisher DOI: | 10.1088/0953-2048/19/5/S53 |
| Abstract: | This paper presents an experimental cryogenic receiver front-end (CRFE) with sharp skirt characteristics for mobile base stations. The CRFE comprises a high-temperature superconducting filter, a cryogenic low-noise amplifier, and a highly reliable cryostat that is very compact. The major characteristics of the proposed CRFE measured at 70 K are a centre frequency of 1.95 GHz, passband width of 20 MHz, sharp selectivity of 20 dB/100 kHz, 1.4 dB ripple, 31.3 dB average passband gain, and average passband equivalent noise temperature of 47.9 K. The CRFE weighs 19 kg and occupies 35 l. Random failure of the cryostat is also evaluated by a continuous operation test using four identical ones simultaneously. The cryostat used in the CRFE has a high reliability level of over five years of continuous maintenance-free operation. |
| Rights: | Copyright © Institute of Physics and IOP Publishing Limited 2006. |
| Relation: | http://www.iop.org/EJ/abstract/0953-2048/19/5/S53/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/14603 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 野島 俊雄
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