FILTER ADJUSTING METHOD, FILTER ADJUSTING DEVICE, AND FILTER CIRCUIT

摘要

The object is to provide a filter circuit as well as a filter adjustment method and a filter adjustment apparatus that can adjust the characteristics of an analog filter by use of a simple configuration. A filter adjustment method of adjusting the characteristics of an analog filter (111) includes supplying a pseudo-random code to the analog filter (111), computing a cross-correlation between an output of the analog filter (111) and the pseudo-random code, and adjusting the characteristics of the analog filter based on the computed cross-correlation.