Antenna for e.g. universal mobile telecommunication system, has parasitic units connected to radiant pellet by short circuits with variable positions and widths according to one set point generated by external control module

摘要

The antenna has a radiant pellet (1) with two slits (9, 10) positioned in the H-plane. Short-circuits (11, 12) are realized on each slit to modify depth of the slits and are at variable positions based on a set point generated by an external control module (13). Parasitic units (2, 3) are connected to the pellet by short circuits (15, 16) with variable positions and widths based on another set point generated by the module.