COMBINED LOG-PERIODIC ANTENNA Russian patent published in 2000 - IPC

FIELD: radio engineering; transceiver antennas operating in ultrahigh- and very-high-frequency bands. SUBSTANCE: antenna designed for receiving television signals in frequency band of 48.5 to 862 MHz in all channels from 1 through 69 has set of dipoles in the form of steel rods welded to two supporting pipes; one of pipes carries ultrahigh-frequency signal transmitting cable; both pipes form two half- curtains oriented to television center which, together with ultrahigh- frequency signal amplifier mounted on supporting pipes on shortest dipole side and soldered to cable, organize receiving section of antenna for ultrahigh-frequency signal. Antenna also has dipole of two linear members in the form of steel pipes organizing section for receiving very-high-frequency signal. Both UHF and VHF sections are electrically and mechanically interconnected through interface provided with cable for transmitting common UHF and VHF signal to television set; interface is, essentially, insulating shell with detachable bottom that has hole to receive stud securing supporting tubes and partition with external seat for mounting supporting tubes. Shell accommodates matching circuit for balancing, filtering, and interconnecting antenna sections and for amplifying common UHF and VHF signal. Partition is provided with peripheral bore for passing common UHF and VHF signal cable and central bore for UHF signal cable. EFFECT: enlarged range of television signals received, simplified design and improved reliability of antenna. 12 cl, 5 dwg