Patent · US Expired

Polarization means for generating circularly polarized electro-magnetic waves

US4479128A · kind A · utility

19Cited by

5References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Anton Brunner · Starnberg, DE
Klaus Rieskamp · Reken, DE

Key dates

Filing date	Jul 8, 1981
Grant date	Oct 23, 1984
Priority date	—
Expiry date	Jul 8, 2001

Classification

Technology area (CPC H)Electricity
CPC primaryH01Q15/244
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A re-polarization means for generating circular polarized electro-magnetic waves using single or multi-layer lattice structure mounted in front of a radiation aperture with the lattice structure comprising a plurality of conductors which extend parallel to each other and/or meander shaped and wherein the lattice structure has one or more additional layers which are closer to the radiation aperture and which has a plurality of parallel conductors but that are inclined by an angle of 45.degree. relative to the direction of the conductors mounted on the other layers which meander. Additionally, orthogonal polarization suppression is achieved with the apparatus of the invention. The invention can be applied to a radom of a target tracking radar antenna, for example.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.