Patent ID: 6603373
Filing Date: 2003-08-05
Classification: H01P

Abstract:
A micro strip line filter, comprising:(i) a dielectric substrate having a top surface and a bottom surface; (ii) a plurality of resonator electrodes provided on the top surface of said dielectric substrate, and which include at least a first-stage resonator electrode and a last-stage resonator electrode; (iii) an input/output electrode which is connected to at least one of said first-stage and last-stage resonator electrodes, and which is provided on the top surface of said dielectric substrate; (iv) a first ground electrode which is provided on the bottom surface of said dielectric substrate, and which is disposed so as to be opposed to said plurality of resonator electrodes with said dielectric substrate therebetween; and (v) at least one second ground electrode which is provided on the top surface of said dielectric substrate, and which is conductively connected to said first ground electrode and not conductively connected to said resonator electrode that is connected to said input/Output electrode, wherein said input/output electrode and said at least one second ground electrode are arranged on the top surface of said dielectric substrate such that probes of a measuring instrument can contact said input/output electrode and said at least one second ground electrode for measuring the electrical characteristics of said microstrip line filter.