Patent ID: 7859471

Claim:
A communication apparatus comprising: a case; and a communication control circuit which is disposed in an inner portion of the case; and an antenna device which is connected to the communication control circuit, wherein the case includes a case body and an antenna receiving portion which is disposed to extend from one side wall of the case body outward, wherein the antenna device includes: a substantially L-shaped substrate which has a first substrate portion extending in one direction and a second substrate portion curved from the first substrate portion and extending toward a lateral direction of the first substrate portion; a ground connection portion which is disposed on the substrate and connected to a ground of the communication control circuit; a first loading section which is disposed on the first substrate portion and constructed by forming a line-shaped conductor pattern on an elementary body made of a dielectric material, a magnetic material, or a complex material having dielectric and magnetic properties; a second loading section which is disposed on the second substrate portion and constructed by forming a line-shaped conductor pattern on an elementary body made of a dielectric material, a magnetic material, or a complex material having dielectric and magnetic properties; an inductor section which connects ends of the first and second loading sections to the ground connection portion; and a feed section which is connected to the communication control circuit and feeds a current to a connection point of the ends of the first and second loading section and the inductor section, and wherein any one of the first substrate portion provided with the first loading section and the second substrate portion provided with the second loading section are disposed in the antenna receiving portion, and the other is disposed along an inner surface of the one side wall.