Feed system for microwave antenna employing pattern control elements
US4178576A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1977 |
| Grant date | Dec 11, 1979 |
| Priority date | — |
| Expiry date | Sep 1, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A feed system for a dish-type microwave antenna has a primary radiator for directing a primary radiation pattern onto the dish-type antenna. A pair of symmetrical pattern control elements are aligned with the E plane of the antenna and extend radially outwardly from opposite sides of the axis of the primary radiator between the primary radiator and the antenna for increasing the antenna gain, reducing the sidelobe levels and reducing the half power beamwidth of the antenna in both the E and H planes. In an exemplary embodiment, the pattern control elements comprise metal strips mounted on the surface of a rigid coaxial cable extending along the axis of the primary radiator for transmitting microwaves to and from the primary radiator, and the metal strips are inclined toward the antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.