PLANAR MICROSTRIP ANTENNA ARRAY (OPTIONS) Russian patent published in 1997 - IPC

FIELD: radio engineering; radar systems; communication systems and metrology. SUBSTANCE: antenna array has odd number of rectangular-shape radiators isolated by equal- width gaps; central radiator 3 is square-shaped with side equal to λ/2; intermediate radiators 4 are rectangular in shape with one side 8 equal to half the wavelength and other side 7 equal to wavelength; other radiators 9 are square-shaped with side equal to wavelength; feed 11 of central radiator 3 and feeds 15 of intermediate radiators 4 are connected to microstrip power network 16. Antenna array ensures equivalent reception of linearly polarized signal with any orientation of polarization vector between 0 and 90 deg. during reception and orientation of polarization vector at 45 deg. during transmission. EFFECT: provision for total directivity pattern ensuring equal conditions for receiving and transmitting linearly polarized signal. 2 cl, 5 dwg