WIDE-BAND ZIGZAG-SHAPED ANTENNA WITH REFLECTOR Russian patent published in 1998 - IPC

FIELD: antenna equipment, in particular, communal and individual receiving TV antennas, radio communication equipment, such as cordless telephones. SUBSTANCE: device has driven element which is shaped as two identical metal rhombic frames which are mounted in symmetry about power supply feeds, and flat reflector, which is spaced from driven element by distance S. Shape of side surface of each rhombic frame is regular pyramid frustum, which sides are shaped as trapezium which lower base length is L = (0,25-0,33)λ_l,, upper base length is l= L-2d; and height is . S is equal to (0,2-0,25)λ_u and is measured from upper trapezium base, which length is l; it is directed towards flat reflector. In addition d = 0,125(λ_l-λ_u),, where λ_l - is wavelength of lowermost band frequency; λ_u - is wavelength of uppermost band frequency. EFFECT: decreased standing-wave ratio in antenna cable in wide band with contact ratio of at least 1.5...2. 3 dwg