中国物理B ›› 2017, Vol. 26 ›› Issue (12): 128501-128501.doi: 10.1088/1674-1056/26/12/128501
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
Xiang Wang(王翔), Bin Wei(魏斌), Xi-Long Lu(陆喜龙), Xu-Bo Guo(郭旭波), Bi-Song Cao(曹必松)
Xiang Wang(王翔)1, Bin Wei(魏斌)1, Xi-Long Lu(陆喜龙)2, Xu-Bo Guo(郭旭波)1, Bi-Song Cao(曹必松)1
摘要: This study presents two multimode stepped-impedance structures to design single-and dual-band filters. Transmission zeroes are introduced for the single-band filter by using dual-mode stepped-impedance resonators. The single-band filter with high selectivity is centered at 6.02 GHz and has a fractional bandwidth (FBW) of 25.6%. Four stubs (two low frequency and two high frequency ones) are connected to the rectangular patch in the center to construct a quadruple-mode resonator. The independent conditions of the center frequencies of the high and low bands of the resonator are analyzed. A dual-band filter, which operates at 1.53 GHz and 2.44 GHz with FWBs of 12.1% and 14.1%, respectively is designed. The single-and dual-band filters are both fabricated with double-sided YBCO films and they can be used in mobile and satellite communications.
中图分类号: (Superconducting devices)