| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable resonator capable of remarkably changing a bandwidth. SOLUTION: A variable resonator includes a first transmission line 101, a second transmission line 102 and a plurality of switch circuits 150. The electrical length of the first transmission line 101 is equal to the electrical length of the second transmission line 102. The characateristic impedance for the even mode of the first transmission line 101 is equal to the characteristic impedance for the even mode of the second transmission line 102. The characteristic impedance for the odd mode of the first transmission line 101 is equal to the characteristic impedance for the odd mode of the second transmission line 102. Each switch circuit 150 is connected to either of the first transmission line 101 and the second transmission line 102, and one of the switch circuits 150 is turned on. COPYRIGHT: (C)2011,JPO&INPIT |
