Patent ID: 8212731
Filing Date: 2012-07-03
Classification: H01Q

Abstract:
1. An antenna device comprising: a substrate; a conductor film which is formed to extend in one direction on a surface of the substrate; first and second loading sections which are disposed to be separated from the conductor film on the substrate 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, said first and second loading sections having base ends directly connected to each other at a connection point; an inductor section which directly connects the connection point to the conductor film; and a feed section which feeds a current directly to the connection point, wherein a first resonance frequency is set by the first loading section, the inductor section, and the feed section, and a second resonance frequency is set by the second loading section, the inductor section, and the feed section.