| 摘要 |
The invention relates to producing miniaturised or nondirectional antennas used in particular in a user remote control context. The general principle of said invention is to make it possible to use as a base a helical antenna operating in an axial mode and to reduce the helix dimensions by simultaneously using one or several slow wave techniques. With respect to previous solutions, said invention provides the following advantages: a) substantially reduced dimensions, b) very simple and low production costs, and c) input impedance comparable with that of conventional helical antennas. |
