Antenna apparatus
US6697025B2 · kind B2 · utility
30Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2001 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Jul 13, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/265
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A one-wavelength loop antenna element (103) shaped like a rectangle is placed close to a radio base plate (101) and further is bent at both end parts toward a feeding section, whereby a current distribution where the current at the tip of turn up becomes zero is formed. Current is concentrated on the loop antenna element (103), so that the current component flowing onto the top of the radio base plate (101) is decreased, the effect produced when a human being carries a radio containing an antenna including the loop antenna element is suppressed, and the directivity responsive to an arrival wave is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.