Multiband planar built-in radio antenna with inverted-L main and parasitic radiators
US7319432B2 · kind B2 · utility
116Cited by
8References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 2003 |
| Grant date | Jan 15, 2008 |
| Priority date | — |
| Expiry date | Mar 11, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/42
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-band radio antenna device (1) for a radio communication terminal, comprising a flat ground substrate (20), a flat main radiating element (2, 9) having a radio signal feeding point (3), and a flat parasitic element (5, 6). The main radiating 5 element is located adjacent to and in the same plane as said ground substrate, and preferably dielectrically separated therefrom. The antenna device is suitable for being used as a built-in antenna in portable radio terminals, such as a mobile phone (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.