FLAT ANTENNA FOR RECEIVING AN L-BAND RADIO SIGNAL OF CIRCULAR POLARIZATION Russian patent published in 2021 - IPC H01Q21/00 

FIELD: antenna technology.

SUBSTANCE: invention relates to antenna technology, in particular to phased array antennas for receiving a circular polarization signal. The expected result is achieved by the fact that in the antenna, unlike the prototype, the emitters that are aerial patch antennas and those being part of the module in the form of a square 2×2 emitters, have a two-level structure: four delay lines and a microstrip adder are located at the lower level, and at the upper level square plates of patch antennas, each patch antenna is excited at two points using probes with a phase shift of 90° between them, as part of the module, two upper and two lower patch antennas in pairs have the same location and excitation phase, the upper patch antennas are rotated 180° relative to the lower patch antennas, the modules are combined into square sublattices of the 2×2 module, where the modules are sequentially rotated relative to the center of the sublattice by 90° with a sequential shift of the excitation phase by 90°, further, the sublattices are combined into a square lattice of the 2×2 sublattice and installed without turning them relative to the center of the lattice without shifting the excitation phases of the sublattices.

EFFECT: creation of an antenna array with high-quality reception of a circular polarization signal.

1 cl, 6 dwg