BROADBAND ANTENNA OF VERY HIGH FREQUENCY BAND Russian patent published in 2018 - IPC H01Q9/00 

FIELD: antenna equipment.

SUBSTANCE: invention relates to radio engineering, namely to antenna engineering and is intended for use as a transceiving antenna together with broadband VHF radio stations. Antenna is made in the form of a hollow metal cone (HMC) 1, mounted vertically above the conductive surface (PP) 2 and facing it vertically. Using dielectric gap (DG) 3 HMC 1 is divided into two parts: lower 4 with height h_L and the upper 4 h_U. Spiral conductor (SC) 6 is installed in the cavity of PMC 1 upper part 5, with possibility of switching of its turns number included in the antenna high-frequency current circuit. Number of turns switching is carried out by means of a switch 7 controlled from the radio station output. By a vertex HMC 1 is connected to the central conductor of the coaxial feeder 11, which screen shell is connected to the PP 2.

EFFECT: technical result consists in extending of the operating frequencies range to the low-frequency region without increasing its physical dimensions.

3 cl, 5 dwg