Antenna apparatus and portable radio communication apparatus
US6295030A · kind A · utility
52Cited by
1References
16Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 17, 2000 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Oct 17, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/29
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an antenna apparatus proposed by the present invention, two inverted-F antennas having the same characteristics are supplied with power with phase difference of 180 degrees respectively. Therefore only radio wave of polarized wave in a predetermined direction can be radiated and deterioration in antenna characteristics due to leak currents can be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.