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No. 418Problem statementManufacturing and materials

Development to achieve uniform circular polarisation in designing a cavity backed spiral antenna (1-18GHZ).

Source

Source summary

Abridged source description: improve a cavity-backed spiral antenna's broadband polarisation performance, addressing weak low-frequency behaviour and high-frequency ellipticity that affects direction finding. The replacement must fit the existing envelope and radome. Detailed military sensing specifications are omitted.