Doppler navigation antenna having automatic land-sea error correction

US4340892A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Anton Brunner · Starnberg, DE
• Werner Jatsch · Neubiberg, DE

Key dates

• Filing date: Dec 7, 1970
• Grant date: Jul 20, 1982
• Expiry date: Dec 7, 1990

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01Q25/004
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A doppler navigation antenna having automatic land-sea error correction through the utilization of two somewhat differently inclined lobe groups consisting of four lobes each, and employing a plane radiator group which comprises a plurality of individual radiators arranged in parallel rows. Each end of each radiator is fed by a pair of feed lines which extend transversely in the rows, the individual feed lines of each pair of feed lines having slightly different phase delay characteristics.