BAND CONTROL CIRCUIT, TUNABLE FILTER, TUNABLE DUPLEXER AND BAND CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To provide a band control circuit capable of easily and highly accurately controlling band properties of a tunable filter even if various parameters that contribute to the variation of the band properties of the tunable filter may change.;SOLUTION: A band control circuit 10 according to the present invention comprises: coefficient acquisition means 20 which acquires a coefficient corresponding to a parameter that has been inputted; function determination means 30 which determines a control function by using the coefficient thus acquired; and calculation means 40 which calculates an operation amount for controlling a passband of a tunable filter by using the control function thus determined. Here, the control function denotes a function for outputting a value regarding a band of the tunable filter by the operation amount being inputted when the coefficient is set.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT