HIGH-FREQUENCY LINE AND HIGH-FREQUENCY CIRCUIT

摘要

A high-frequency line for high-frequency signals of the microwave band or millimeter wave band is composed of a semiconductor substrate 21, a grounding conductor 22 formed on the underside of the semiconductor substrate 21, an insulator 23 formed on the top of the semiconductor substrate 21 and having an effective dielectric constant higher than that of the semiconductor substrate 21, and a strip conductor 25 provided in a groove formed in the top of the insulator 23 and having a concavely curved configuration that the central surface area of the strip conductor is lower than its marginal portions. <IMAGE>