MICROSTRIP ANTENNA ARRAY

摘要

radio engineering. SUBSTANCE: microwave antenna array can be used in radiointroscopes to measure parameters of Muller matrix for flaw detection in construction engineering and in electromagnetic microwave medical applicators. Antenna array has single aperture accommodating two sub-arrays; one of them is transmitting sub-array that functions to radiate linearly or horizontally polarized signal, or circularly polarized signal with polarization vector rotating clockwise or counter-clockwise; other one is receiving sub-array ensuring decomposition of wave received into two orthogonally polarized components and their discrimination in separate channels. Antenna has even number of radiators forming rectangle and located in assemblies of rectangular coordinate grid where they are spaced apart by gaps. Central radiators of four beams of rectangular coordinate grid are rectangular in shape whose one side equals wavelength and its adjacent side is as long as half-wavelength. Remaining radiators are square in shape with square side as long as wavelength. Four central radiators closest to origin of antenna array coordinates are electrically connected over center line to ground surface of array through contact members. Connected to each central radiator at point located in center of side edge is section of input transmission line and each central radiator is connected to respective antenna feed. EFFECT: enlarged functional capabilities. 8 cl, 8 dwg