INVITED PAPER Special Section on Recent Progress in Superconducting Analog Devices and Their Applications Automatic Trimming Technique for Superconducting Band-Pass Filters Using a Trimming Library
2009
SUMMARY The superconducting band-pass filter has small insertion loss and excellent out-of-band rejection properties. It has been put to practical use in a number of applications. However, in order to expand its range of application, a tuning technique that can restore the filter characteristics is needed. We propose an automatic tuning system using a trimming library and checked the feasibility of the system by tuning a forward-coupled filter with three resonators. The results show that the trimming library method is an effective way of automatically improving the filter characteristics.
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