HIGH-FREQUENCY TRANSMISSION LINE CONNECTION STRUCTURE, WIRING SUBSTRATE, HIGH-FREQUENCY MODULE, AND RADAR DEVICE

摘要

It is possible to provide a high-frequency transmission line connection structure, a wiring substrate having the connection structure, a high-frequency module having the wiring substrate, and a radar device. A first layered type waveguide sub-line unit (21) includes a pair of main conductor layers opposing to each other in the thickness direction so as to sandwich a dielectric layer (31) having the same thickness as the dielectric layer (31) of a micro strip line (1). A second layered type waveguide sub-line unit (22) includes dielectric layers (31, 32) having a thickness greater than the dielectric layer of the first layered type waveguide sub-line unit (21). A layered type waveguide main line unit (23) includes dielectric layers (31, 32, 33) having a thickness greater than the dielectric layer of the second layered type waveguide sub-line unit (22). The micro strip line (1) is connected to a conversion unit (10) having an upper main conductive layer constituting the respective line units which are formed as a unitary block.