Antenna with polarization converting auger director
US6320552A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2000 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Mar 9, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q15/244
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna, or in the context of an array an antenna element, includes a feed and a separate polarization converting director. The polarization converting director includes a helically disposed conductor defining a pitch, a projected diameter, and a longitudinal axis. The feed propagates electromagnetic radiation (in transmit mode) toward the director, parallel its axis. The director intercepts part of the radiation, focuses or directs the radiation, and also converts circular polarization to linear, or linear polarization to circular. The feed may thus be linearly or circularly polarized. Various feeds include waveguides or horns, slots, dipoles, and planar or nonplanar spirals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.