| US 7,570,216 B2 | ||
| Antenna device | ||
| Takeaki Itsuji, Hiratsuka (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Jan. 31, 2008, as Appl. No. 12/23,863. | ||
| Claims priority of application No. 2007-023596 (JP), filed on Feb. 01, 2007. | ||
| Prior Publication US 2008/0186239 A1, Aug. 07, 2008 | ||
| Int. Cl. H01Q 1/38 (2006.01) | ||
| U.S. Cl. 343—700MS [343/828] | 12 Claims |
| 1. An antenna device which works in a predetermined frequency band and has a resonator section, a semiconductor section and
an antenna section, wherein
the resonator section comprises a first conductor section, a dielectric section, and a second conductor section for specifying
a reference potential against each section of the antenna device, which is arranged so as to oppose the first conductor section
through the dielectric section;
the semiconductor section is arranged so as to be sandwiched between the first conductor section and the second conductor
section; and
the antenna section uses the second conductor section as a grounding conductor, is solid, makes at least its surface electroconductive,
and is arranged on the first conductor section.
|