Antenna apparatus
US7482977B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2005 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Mar 8, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/50
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is a flat-type antenna apparatus which has a radiating conductor and a reference conductor disposed opposite to each other and performs feeding between the radiating conductor and the reference conductor at a position offset from the center of the radiating conductor center. The antenna includes: an insulative material layer which has relative magnetic permeability greater than 1 and is placed in a gap between the radiating conductor and the reference conductor; and a short-circuiting conductor which is disposed at a position to suppress unintended excitation and enables electric conduction between the radiating conductor and the reference conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.