Antenna device and electronic apparatus
US7466267B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2006 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Jan 23, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0421
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna device includes a dielectric substrate, a ground plane, a pair of antenna elements, a feeding section, and a pair of transmission lines. The ground plane is formed on a surface of the dielectric substrate. The antenna elements are flat, have different resonant frequencies, are formed on another surface of the dielectric substrate, and respectively have ends electrically connected to the ground plane. The feeding section feeds power to each of the antenna elements. The transmission lines carry out impedance conversion such that parts of the transmission lines which are connected to the antenna elements have impedances matching input impedances of the antenna elements, respectively, and such that part of the feeding section which is fed with the power has an impedance matching an impedance of the feeding section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.