Switched superconductive filter-banks

• Published in: 2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535) Vol. 1; pp. 131 - 134 Vol.1
• Main Authors: Peik, S.F., Jolley, B., Mansour, R.R.
• Format: Conference Proceeding
• Language: English
• Published: Piscataway NJ IEEE 2004
• Subjects: Adaptive filters; Applied sciences; Band pass filters; Channel bank filters; Circuit properties; Communication switching; Electric, optical and optoelectronic circuits; Electronic circuits; Electronics; Exact sciences and technology; Filter bank; Frequency filters; High temperature superconductors; Insertion loss; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Multiplexing; Superconducting filters; Superconductivity; Filtering; Optimal filter; Two channel system; Microwave; Centimetric wave; High temperature; Adjacent channel; Microwave filter; Switching; Implementation; Simulation; C band; Insertion loss; Filter bank; Feasibility; High temperature superconductor; Planar technology
• ISBN: 0780383311; 9780780383319
• ISSN: 0149-645X; 2576-7216
• DOI: 10.1109/MWSYM.2004.1335821

This paper demonstrates the feasibility of building switched filter-banks using direct switched bandpass filtering in a channel-drop configuration. An almost seamless combination of adjacent channel signals is achieved through an advanced filter response optimisation. Implementing the switched filter bank in high-temperature superconductive planar filters attains low ripple insertion loss under all switching conditions. Simulations and measurements on a two-channel C-band HTS filter-bank validate the new concept.