Repeater isolation through antenna polarization diversity
US6049315A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1997 |
| Grant date | Apr 11, 2000 |
| Priority date | — |
| Expiry date | Jul 1, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/36
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A repeater for extending the range of communications between a base station and a mobile unit without rendering the mobile unit incapable of communicating directly with the base station. In general, the polarization of the repeater input-antenna is different from the polarization of the repeater output-antenna such that sufficient isolation exists between the input and output antennas without substantially reducing the ability of the input antenna and the output antenna to receive signals from and output signals to the base station and the mobile units. In a preferred embodiment, the repeater input antenna is circularly polarized in one direction while the repeater output antenna is circularly polarized in a direction opposite from the input antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.