Adjustable frequency selective broadband antenna with dipoles covered by a slider element which affects their transmission and reception characteristics

摘要

The antenna (4) has one or more dipoles or dipole elements (3) which are covered by a slider element which moves between a start position (1) and an operating position (2). The position of the slider affects the transmission and reception characteristics of the dipole(s) which results in a level drop in the corresponding frequency band.