| 摘要 |
A filter circuit comprises a first impedance element disposed in an input side, a second impedance element disposed in an output side, having an input end connected to an output end of the first impedance element, and made of the same component as that of the first impedance element, a distributed constant resonance circuit having one end connected to a junction between the output end of the first impedance element and the input end of the second impedance element, and a third impedance element having one end connected to the input end of the first impedance element and the other end connected to the output end of the second impedance element. The first and second impedance elements and the distributed constant resonance circuit are each constituted by a transmission line having a predetermined distributed constant, and the third impedance element is constituted by a capacitor having a predetermined concentrated constant.
|
