HIGH-FREQUENCY PLANAR-ARRAY ANTENNA Russian patent published in 1997 - IPC

FIELD: antennas for transceiving linear-polarization waves. SUBSTANCE: planar-array antenna has at least one antenna module incorporating four radiating element equidistantly arranged in one plane at square array nodes, and cophasal waveguide power splitter wherein TE 01 mode in propagating. Power splitter has three identical T-joints locates in plane of vector E whose four outputs are connected to radiating elements through rectangular waveguide sections whose axes are perpendicular to plane of vector E. Each radiating element has plates 1, 2 with current-conducting surface tightly fitted to each other. Plate 1 has rectangular depression 5 made in its central part on side facing plate 2; its depth h approximately equals plate thickness. Center 0 of depression 5 is located on longitudinal axis N-N of rectangular waveguide section 4; large side c of depression is parallel to large side a of rectangular waveguide section 4; each depression has four slits 6 of length about e = π/2 along larger sides in immediate proximity of them, their centers being at square tops on side f<λ, where l is wavelength in free space. EFFECT: improved design. 12 cl, 11 dwg