Flat circular unidirectional microwave antenna
US4819003A · kind A · utility
Inventors
Key dates
| Filing date | Mar 5, 1985 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Mar 5, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/0012
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to telecommunication technology and broadcasting antenna technology. The power-feeding portion and the wave-guiding space, and the power-feeding wave-guiding space and the power-radiating wave-guiding space are matched for the effective radiation of the fed power. A conical matching body is disposed within the wave-guiding space with the apex thereof directed toward a power-feeding opening; the junction of the power-feeding wave-guiding space and the power-radiating wave-guiding space is formed in a sectional shape of a semicircle, a hemihedral polygon or a desired curvilinear shape; the power-feeding wave-guiding space the power-radiating wave-guiding space are matched in impedance; or a matching body is provided at the junction of the power-feeding wave-guiding space and the power-radiating wave-guiding space. A delaying means, such as a corrugated plate, is provided on the power-radiating surface or on a wall disposed opposite to the power-radiating surface, to radiate the power of the same phase uniformly with the reduced side lobe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.