Dipole antenna with multiple feed

摘要

The invention relates to a dipole antenna with multiple feed, having dipoles which are fed via a balanced parallel line and are arranged on the two line branches of the parallel line. In the case of such a dipole antenna, in order to achieve a construction which is simple and stable and can be produced cost-effectively, and whose electrical properties are, furthermore, as insensitive as possible to production tolerances, the parallel line consists of two strip-shaped sheet-metal parts which are arranged in such a manner and are bent in each case along one bending edge, running in the longitudinal direction, in the opposite direction to its base surface, such that the base surfaces lie in a plane which runs through the antenna axis and are at right angles to the dipoles, and the bent surfaces are opposite one another and approximately parallel. This dipole antenna is particularly suitable for a logarithmic-periodic (log-periodic) indoor antenna having a parallel line which is arranged in a plastic housing. In this case, it is expedient to produce both a mechanically stable mounting of the housing, which is split into two half shells and a permanently reliable contact with the parallel line just by means of the dipoles passing through holes in the parallel line with a push fit, which holes are pressed into corresponding recesses in the housing.