Bi-frequency cellular telephone antenna
US6297784A · kind A · utility
1Cited by
12References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1998 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Nov 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/32
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A bi-frequency cellular telephone antenna includes a shaft fastened to a cellular telephone, an insulative barrel fastened to the shaft at a top side, a first coil for a first frequency mounted inside the insulative barrel, and a second coil for a second frequency mounted around the periphery of the insulative barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.