Polarization diverse antenna for portable communication devices
US6031503A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1997 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Feb 20, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0802
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communications card having an antenna assembly providing polarization diversity for use with a portable computer is provided. The antenna assembly comprises two folded antennas, which may be dipoles or slot radiators, that are disposed orthogonally to one another to provide polarization diversity. Signals are carried to and from the antenna by microstrip feed lines. The microstrip lines are placed off center along each antenna slot to establish an acceptable impedance match for the antenna. The feed lines are coupled to the communications card by way of coaxial cables. The antenna assembly is coupled with the communications card in a hinged arrangement thus allowing for spatial redirection of the antenna, if desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.