Identical surface shaped reflectors in semi-tandem arrangement
US5673056A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1995 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Jul 14, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/007
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A pair of dual-gridded shaped reflectors (10) and (20) are arranged one behind the other for transmitting and receiving orthogonally polarized energy waves. A front reflector (10) has a first shaped reflective surface (12) formed on a first body surface (14) for providing a first shaped beam coverage. A rear reflector (20) has a second reflective surface (22) formed on a second body surface (24) for providing a second shaped beam coverage. The first and second reflective surfaces (12) and (22) have substantially identical surface contours and include reflective grids (13) and (23). The reflective grids (13) and (23) are orthogonal with respect to each other so as to handle orthogonally polarized energy. The first and second shaped reflective surfaces (12) and (22) are arranged offset and tandem from each other so as to provide first and second focal points (16) and (26) separate from each other while providing substantially identical first and second shaped beam coverages (15) and (25). As a result, the front and rear reflectors (10) and (20) may be fabricated with a single mandrel (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.