MULTICHANNEL, CIRCUMFERENTIALLY POLARIZED, SLOT WAVEGUIDE RADIATOR Russian patent published in 1997 - IPC

FIELD: antenna engineering. SUBSTANCE: radiator is double-level structure (multilevel in general case) that has in lower level double-channel circumferentially polarized radiator designed for main band frequency and made on rectangular waveguide section with internal conducting barrier parallel to wide walls wherein two waveguide-exciting quarter-wave slits are cut. Wide radiating wall radiating wall of waveguide is modular structure installed on upper level and provided with several similar double-channel radiators of second frequency band which is a multiple of fundamental band, arranged over its perimeter with gaps forming cross-like slit of fundamental frequency band. EFFECT: enlarged functional capabilities. 3 dwg