| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To accommodate an antenna device to a compact and flat design of a communication device, ensuring satisfactory antenna performance in a state separated from a circuit board and connected thereto with a coaxial cable. <P>SOLUTION: An antenna device 1 connected via a coaxial cable C to a circuit board 10 with a ground surface GND formed includes: an insulating substrate body 2; a ground pattern GP pattern-formed of metal foil on a circuit board side of the substrate body and connected with a ground wire of the coaxial cable; an open antenna pattern 3 pattern-formed of metal foil on the substrate body with a base end connected to the ground pattern and a tip end extended as an open end, and provided at the base end with an antenna side feeding point FP1 connected with a core wire of the coaxial cable; and a high frequency current control terminal 4 having a base end connected to the ground pattern and extended toward the circuit board and the other end connected to a substrate body side of the ground surface. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
