PURPOSE: To provide a distributed constant type filter which can easily maintain the characteristic of the filter within a fixed range by reducing the dispersion of capacity to couple resonators.
CONSTITUTION: Concerning the distributed constant type filter provided with strip line resonators 11 and 12 or the like on laminated ceramic boards 41 and 42, dielectrics 43 are laminated on the two resonators 11 and 12 at least, the opened terminal parts of the resonators 11 and 12 and a conductor 32 for coupling are faced through the dielectrics 43 each other, and the resonators are electrically coupled each other through thus formed capacity. Further, the resonators 11 and 12 and conductors 21 and 22 for terminals are electrically coupled each other through capacity formed by facing the resonators 11 and 12, conductors 31 and 33 for coupling and conductors 21 and 22 for terminals.
ISHITOBI TOKUMASA
SHIMODA HIDEAKI
