Abstract
This paper presents the field trial results of a high temperature superconductor filter system (HTSFS) in a code division multiple access (CDMA) mobile communication base station (BTS) in Tangshan, China. The center frequency of the HTSFS is 830 MHz with 1.4% fractional bandwidth. The noise figure (NF) of the HTSFS, including connectors and cables, is 0.8 dB. The field trial results show that after the HTSFS was installed in the receiver front-end of a CDMA base station, the transmitting power of handset was decreased by 3.1 dB on average. Up to now, the HTSFS has been running steadily in the base station for more than 22 months, demonstrating the reliability and stability of the system.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Wei B, Zhang X P, Liu K, et al. HTS subsystem formed by 12-pole filter for GSM1800 mobile communication. Physica C, 2003, 386: 551–554
Tsuzuki G, Suzuki M, Sakakibara N. Superconducting filter for IMT-2000 Band 2000. IEEE Trans Microw Theory Tech, 2000, 48(12): 2519–2525
Gashinova M S, Guobina M N, Zhang G Y, et al. High-T c supercon-ducting planar filter with pseudo-Chebyshev characteristic. IEEE Trans Microw Theory Tech, 2003, 51(3): 792–795
Zhang G Y, Zhu M H, Cao B S, et al. Design and performance of a compact forward-coupled HTS microstrip filter for a GSM system. IEEE Trans Appl Supercon, 2002, 12(4): 1897–1901
Yin Z S, Wei B, Cao B S, et al. An HTS filter subsystem for 800 MHz mobile communication system. Inter J Modern Phys B, 2005, 19(1–3): 419–422
Liu K, Cao B S, Zhu M H, et al. Fabrication and laboratory testing of a high-temperature superconducting subsystem for DSC1800 mobile communication. Supercon Sci & Tech, 2002, 15(12): 1741–1743
Salkola M I. CDMA capacity—can you supersize that, WCNC 2002. IEEE, 2002, 2: 768–773
Guo X B, Cao B S, Wei B, et al. A high performance HTS filter subsystem for CDMA mobile communications, Chin J Phys, 2004, 42(4-II): 463–467
Yang S C. CDMA RF System Engineering. Boston: Artech House, 1998
Author information
Authors and Affiliations
Corresponding author
Additional information
Supported by Tsing-Tech Innovations and the National High Technology Research and Development Program of China (863 Program)
About this article
Cite this article
Yin, Z., Wei, B., Cao, B. et al. Field trial of an HTS filter system on a CDMA base station. CHINESE SCI BULL 52, 171–174 (2007). https://doi.org/10.1007/s11434-007-0036-0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s11434-007-0036-0