Resumen
Flat single antenna with grooves on a radial guide and with wave-activated circular polarisation.Flat circular polarisation microwave antenna with two operating modes that allow it to be used in single pulse systems. It is built on a radial guide, formed by two parallel conductor planes on dielectric material. The radial structure is a set of groove pairs placed in the form of concentric rings. It is powered through four pillars centred on the guide, which are power supplied using the printed distribution network. The network connects the two antenna inputs to the four probes. Each of the two inputs generates a different beam. The first is directed in the direction perpendicular to the antenna plane. The second has a conic diagram, with a null of said direction its phase is variable in the azimuth direction. By comparing the amplitude and phase of both diagrams, the signal arrival direction can be obtained, which constitutes a single pulse system.