PERIODIC DIPOLE ANTENNA Russian patent published in 1997 - IPC

FIELD: radio engineering. SUBSTANCE: device has set of co-planar emitter which are designed as dipoles 1 which are located in parallel and are connected to symmetric two-wire feeder 3 so that emission is done in direction of lesser dipole. Terminals of dipoles are limited by continuous piecewise linear line 2 which has constant inclination angle α for each straight line piece and structure period t. Distance between dipoles 1 and ratio to dipole radiuses conform to condition of constant input resistance of antenna for operating bandwidth. Structure periods of adjacent antenna pieces with different inclination angles conform to condition τ_k+1=τnk

, where n is integer which is not less than two, k = (1, 2, 3, ..., N-1) is number of antenna piece when sequence starts from piece of minimal-length dipole, N is number of antenna pieces with different angles α. EFFECT: keeping beam pattern and level of lobes in operating bandwidth. 1 dwg