Antenna assembly and communication device utilizing such antenna assembly
US6281851A · kind A · utility
5Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2000 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Jan 21, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q11/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communications device with a quarter wave antenna (11) is provided with a quarter wavelength choke that is formed by a conductive coating (14) applied to the inner wall of the housing (12) to the communications device. The conductive coating (14) is electrically coupled as a ground to antenna (11) via the ground to a printed circuit board (13) and a conductive surface to a dividing wall (18) acting as a suspended base by which to support the circuit board (13). The conductive coating (14) is extended from the antenna base over a length equal to a quarter wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.