Antenna device and radio communication card module having antenna device

摘要

Realizing a small-sized antenna device whose protruding length from a main apparatus is made minimum when installed and adding radio communication function thereto and has polarization diversity characteristics. A module main body 5 has a circuit board 22 built therein, an antenna device 1, and a connection terminal 23, and adds radio communication function to a main apparatus 2 when inserted to a slot 3 thereof. The antenna device 1 is mounted to the module main body 5 on a second side 5b located on the opposite side of a first side 5a which has formed thereon the connection terminal 23. The antenna substrate 8 which has at least an inversed F type antenna pattern and a meander type antenna pattern formed on the main surface 8a thereof by printed wiring is supported perpendicular to the insertion direction toward the main apparatus 2.