PARABOLIC ANTENNA FEED Russian patent published in 2001 - IPC

FIELD: antenna equipment used in communication and television receiving systems operating in ground and satellite lines. SUBSTANCE: constructionally the antenna feed is made of two semispherical frames with a perimeter equal to half the operating wave-length, installed orthogonally to each other and to the round-shaped screen. The screen together with the frames is attached to the base of the tubular support installed in the axis of the parabolic antenna so that the frame would face the inner surface of the mirror. Both frames get excited in the diametrically opposite points through the holes in the screen via the phasing circuit and tuned with the aid of short-circuited - stubs installed inside the supporting rod. EFFECT: creation of a parabolic feed possessing a controllable directional pattern adaptable to various mirrors and providing for a sufficiently complete gating of their inner surface. 2 dwg