TV AND RADIO ANTENNA Russian patent published in 1997 - IPC

FIELD: radio engineering, in particular, inner car antennas for TV and radio receivers, alarm security, room TV antenna for meter and decimeter bandwidth. SUBSTANCE: device is designed as two-turn tail area and is made from flat concentric spiral. Middle of one turn is connected through insulating capacitor to grounding braid of coaxial cable. Middle of second turn is connected to central wire of coaxial cable. Middle point of tail area and end of first turn are connected to T-shaped inner dipole. End terminal of second coil is connected to U-shaped external dipole which parallel sides embrace ends of two-turn tail area. Dipoles are made from semi-transparent conducting film which is applied on transparent dielectric base. Coaxial plug has demountable tube adapter for connection to TV socket. EFFECT: increased bandwidth for horizontal polarization TV signals and vertical polarization radio signals. 4 cl, 5 dwg