Beam scanning reflectarray antenna with circular polarization
US6081234A · kind A · utility
33Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1997 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Jul 11, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A novel means of scanning a circularly polarized reflectarray antenna. The reflectarray is an array of metallic elements arranged on a surface designed to compensate for the various path lengths of the optical rays from an illuminating feed to the reflecting surface and then to the antenna aperture. With appropriate design, the phase in the aperture can be made to vary linearly in any desired direction and also to produce a radiated beam normal to the constant phase surface. In the case of circular polarization, this path length compensation can be accomplished by rotation of the individual elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.