Method and system for detecting and discriminating multipath signals
US6839543B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1997 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jun 24, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/24
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless communication system that utilizes a circularly polarized transmitting antenna with dual orthogonal circularly polarized receiving antenna. According to some embodiments, the present invention provides a wireless communication system that includes a first transmitting antenna capable of transmitting first signals having a first type of circular polarization. The transmitting antenna is located at a first location. The system also includes a first receiving antenna capable of receiving second signals having a second type of circular polarization, where the second type of circular polarization is orthogonal to the first type of circular polarization. The system further includes a second receiving antenna capable of receiving third signals having the first type of circular polarization, and the first receiving antenna and the second receiving antenna are both located at a second location. In other embodiments, the present invention may also utilize microwave antenna systems for transmitting a circularly polarized signal and for receiving two orthogonally circularly polarized signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.