Wireless module and production method for wireless module

A wireless module, comprising:

• a first substrate on which an antenna is mounted;
• a second substrate which opposes the first substrate and on which an electronic component is mounted;
• and
• a plurality of electric conductors which connect the first substrate and the second substrate and which transmit a signal between the antenna and the electronic component,
• wherein the plurality of electric conductors are disposed between the first substrate and the second substrate in series in a vertical direction with respect to mounting surfaces of the first substrate and the second substrate,
• wherein the plurality of electric conductors have conductivity,
• wherein a first electric conductor connected to the first substrate is an electric conductor having no material difference between a core section and a surrounding shell,
• wherein a second electric conductor connected to the second substrate is an electric conductor having a material difference between a core section and a surrounding shell, and
• wherein a diameter of the first electric conductor is shorter than a diameter of the second electric conductor.