Dual‐band superconducting bandpass filter with embedded resonator structure. Issue 17 (1st August 2013)

• Record Type: Journal Article
• Authors: Heng, Yong; Guo, Xubo; Cao, Bisong; Ying, Zhijun; Wei, Bin; Zhang, Xiaoping; Zhang, Guoyong; Song, Xiaoke; Wang, Jingchen
• Is Part Of: Electronics letters. Volume 49:Issue 17(2013)
• Page Start: 1096
• Page End: 1097
• Publication Date: 2013-08-01
• Subjects: band‐pass filters -- microstrip filters -- resonator filters -- superconducting filters -- transforms; MgO -- frequency 3.045 GHz to 3.075 GHz -- frequency 2.985 GHz to 3.015 GHz -- planar filter -- parasitic couplings -- coupling coefficients -- synthesised resonator frequencies -- embedded single spiral resonators -- open‐loop resonators -- frequency transformation method -- microstrip filter -- embedded resonator structure -- dual‐band superconducting bandpass filter; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.1856
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A dual‐band superconducting microstrip filter with two passbands of 2.985–3.015 GHz and 3.045–3.075 GHz, respectively, is synthesised by a frequency transformation method. Open‐loop resonators with embedded single spiral resonators are proposed to realise the synthesised resonator frequencies and coupling coefficients. This structure has the advantages of compact size and weak parasitic couplings, which benefit the implementation of the dual‐band planar filter. The filter is successfully designed and fabricated on an MgO substrate. The measured results show high performance and match well with the simulations.