| 摘要 |
PROBLEM TO BE SOLVED: To connect a high frequency circuit installed in a substrate where a micro strip line cannot structurally be formed to the high frequency circuit of the other substrate by making the circuits impedance-matched. SOLUTION: A high frequency filter is formed in a slave substrate 1 formed out of a high dielectric material. It is converted into a coplanar line constituted of patterns 3 and 4 and ground patterns 5 and 6. The coplanar line is connected to the coplanar line of a main substrate 2 constituted of a pattern 7 and a ground pattern 8 by soldering. A signal on the coplanar line of the main substrate is converted into the microstrip line constituted of the pattern 7 and a ground pattern 9 at the back of the substrate. Thus, impedance is matched and the two high frequency circuits can be connected with low loss. |
