Radio frequency antenna with combined lens and polarizer
US4127857A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1977 |
| Grant date | Nov 28, 1978 |
| Priority date | — |
| Expiry date | May 31, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/008
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multibeam antenna having a radio frequency lens fed by a plurality of feedports is disclosed. The radio frequency lens includes a printed circuit parallel plate region and a polarizer section. The polarizer section includes a plurality of polarizer sheets separated by a plurality of layers of dielectric material, the dielectric constant of the printed circuit parallel plate region and the dielectric constant of the layers of dielectric material being selected to form substantially collimated beams, each one of such beams being associated with a corresponding one of the feedports. With this arrangement, the polarizer section is an integral part of the radio frequency lens, thereby reducing the size of the antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.