A substrate processing apparatus is used for radiating UV rays onto a target film formed on a target surface of a substrate to perform a curing process of the target film. Thereby, in the FDD system, the transmission antenna can be determined based on a received signal. The mounting structure 48 may be formed as one piece with the runner body 16 of the same material, has one or more tab features, and may be threaded andor pierced to accommodate an associated net or mounting pin as desired for mounting the runner.