Antenna with a periscope arrangement
US3968497A · kind A · utility
3Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1975 |
| Grant date | Jul 6, 1976 |
| Priority date | — |
| Expiry date | Mar 14, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/191
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an antenna of the Cassegrainian or Gregorian type including a periscope arrangement, the auxiliary reflector has a longer focal distance than the auxiliary reflector of a conventional antenna of this type and the length of the optical path between the auxiliary reflector and the primary source of the antenna is choosen substantially equal to the distance between the auxiliary reflector and that one of its two foci which is the more remote therefrom. This makes it possible to use only plane mirrors in the periscope arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.