Dual- or multi-frequency planar inverted F-antenna
US6717548B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 2001 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Aug 2, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/371
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dual- or multi-frequency planar inverted F-antenna, wherein, a metal surface of the antenna matching the size and shape of the interior installation space of an equipment is installed on the top of a grounding surface, an open slot provided on the metal surface forms a common close end and an open end to thereby partitions the metal surface into a long section and a short section; a desired impedance matching between a short point and a feed point of the metal surface is obtained by adjusting positions of the short point and the feed point in pursuance of frequencies desired; the length of the long section from the short point to the open end of the open slot and the length from the short point to the end point of the short section are decided by dual- or multi-resonance frequencies in cooperating with the open slot which is deformed and curved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.