PURPOSE: To prevent transmission loss and the deterioration of VSWR by providing a concentric protruding part at a contact surface of a metallic case body side connecting the conductor strip of an MSL and the inner conductor of a coaxial line whose outer conductor is the metallic case body.
CONSTITUTION: The concentric protruding part 7 is provided at the contact surface of the metallic case body 3 side connecting the conductor strip 1 of the MSL and the inner conductor of the coaxial line whose outer conductor is the metallic case body 3 through a through hole 9 formed on a dielectric base plate 2 from the earth surface 11 of the micro strip (MSL) constituted on the dielectric base body 2. Thus, since the outer conductor part of the coaxial line at the metallic case body 3 side comes surely into contact with the earth surface 11 of the MSL at the concentric protruding part 7, a non- matching part is removed, and the loss and the deterioration of the VSWR in a coaxial line-MSL converting part can be prevented, and a good characteristic can be secured.
| WO/2006/007002 | MICROSTRIP TO WAVEGUIDE LAUNCH |
| WO/2019/199212 | WAVEGUIDE LAUNCH |
| JP6345371 | Dielectric filter |
KASHIMA SACHIRO
SHIOMI YASUFUMI
NISHIOKA KAZUYOSHI
AONO SHOZO
KINOSHITA AKIRA
| JPH0221802B2 | 1990-05-16 | |||
| JP1117103B | ||||
| JP63144705B |