ASYMMETRIC VIBRATOR Russian patent published in 1997 - IPC

FIELD: antenna equipment, reception-transmission antenna of UH wave radio station of low or medium capacity. SUBSTANCE: asymmetric vibrator includes quarter-wavelength post 1 connected to central conductor of coaxial feeder 2 and counterweight 3 coupled to external conductor 4 of coaxial feeder. Reflector 5 which surface is formed by rotation of part of one branch of parabola with focus f= 0.15 f = 0,15λ around axis of central conductor of coaxial feeder 2 is mounted above post 1. Vertex of parabola faces counterweight 3. Surface of reflector is limited by two parallel planes perpendicular to quarter- wavelength post and crossing surface of reflector 5 at distance H₁= (0,3-0,32)λ, H = 0,5λ= (0.3-0.32) λ, H=0.5f = 0,15λ from point of connection of counterweight, where H₁= (0,3-0,35)λ, H = 0,5λ is working length of wave. Novelty of invention lies in installation of reflector 5 above post 1. EFFECT: increased antenna gain in direction of horizon by 1.5-2.0 dB. 1 dwg