Radome for generating circular polarized electromagnetic waves

US4477815A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

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

Key dates

• Filing date: Jul 8, 1981
• Grant date: Oct 16, 1984
• Expiry date: Jul 8, 2001

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01Q15/244
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Means for re-polarizing and generating circularly polarized waves using a single or multi-layer lattice structure which is placed in front of a radiation aperture with the lattice structure consisting of a plurality of conductors extending in the form of lines which meander and might be rectangular combinations or the like. With a lattice, a polarization conversion into circular polarization and the suppression of orthogonal polarization components is simultaneously achieved by providing that the meandering lines 4 extend in a direction such that the meander lines have an angle of 45.degree. at every location with respect to the respective E vectors of the linearly polarized E-vector fields at such locations. The re-polarization means can be used as a Radome of a target tracking radar antenna.