Crossed polarization same-zone two-frequency antenna for telecommunications satellites
US4757323A · kind A · utility
12Cited by
12References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1985 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Jul 12, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S343/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The antenna comprises a parabolic reflector (1) and a primary source (2). The reflector (1) comprises a first grating of conductor wires (7) and a second grating of conductor wires (8) which are orthogonal to the wires of the first grating, and with both gratings constituting elliptical reflective surfaces. The sizes of the major and minor axes of the ellipses are determined in such a manner that both operating frequencies of the antenna have identical coverge zones on the surface of the globe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.