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High-Temperature Superconducting Receiving Filter Subsystem for Mobile Telecommunication Base Station

Yoshiki UENO, Nobuyoshi SAKAKIBARA, Teruaki YAMADA, Mitsunari OKAZAKI, Masayuki AOKI

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Summary :

High-temperature superconductor (HTS) receiving filter subsystem for mobile telecommunication base station has been developed. An 11-pole HTS filter using YBa2Cu3O7-δ (YBCO) thin films and a low noise amplifier were cooled to 70 K by a small cryocooler. Total noise figure of this subsystem was measured to be 0.5 dB. Furthermore the effect of using the subsystem in the receiver front-end of Code Division Multiple Access (CDMA) cellular base station was investigated. The transmitting power reduction of handy terminal was estimated to be about 35%.

Publication
IEICE TRANSACTIONS on Electronics Vol.E82-C No.7 pp.1172-1176
Publication Date
1999/07/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category
Passive Devices and Circuits

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