| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable resonator that can be produced at lower cost than conventional types, and to provide a variable filter. SOLUTION: In place of a switch, a parallel resonance circuit 4 is used. More specifically, the variable resonator includes a line portion 1 configured annularly by one or a plurality of lines; at least two parallel resonance circuits 4 whose characteristics are changeable; and at least three variable reactance means 2, whose reactance values are variable. One end of each parallel resonance circuit 4 is electrically connected to the line part 1 at a respective different position, and each variable reactance means 2 is electrically connected to the line portion 1 at a prescribed interval, based on an electrical length at a resonance frequency. COPYRIGHT: (C)2011,JPO&INPIT |
