ОБЛУЧАТЕЛЬ ПАРАБОЛИЧЕСКОЙ АНТЕННЫ

摘要

FIELD: antenna engineering. ^ SUBSTANCE: proposed feed of parabolic antenna is designed for use in communication and television reception systems of ground and satellite radio lines. Metal ring of radius equal to 0.4lambdamax < R < 0.5lambdamax and width b = 0.1lambdamax is installed between orthogonal dipoles and cross-like subdish at distance h from the latter on cylindrical rod and disposed on top of radio-transparent shielding casing. Distance h is varied within the range of 0.35lambdamax < h < 0.55lambdamax when tuning antenna to gain maximum depending on geometrical dimensions of mirror. ^ EFFECT: ability of adapting to various mirrors and controlling directivity pattern; enhanced gain of antenna due to more comprehensive use of mirror. ^ 1 cl, 2 dwg