| 摘要 |
The present invention relates to a multiband planar antenna comprising, on a substrate having a ground plane, at least a first slot (1) dimensioned for operation at a first frequency (f1) and a second slot (2) dimensioned for operation at a second frequency (f2), the two slots having a closed shape and being excited by a common supply line (3). Furthermore, the slots are coupled to the supply line such that the coupling with the first slot is implemented in an electrical plane (T1) of the supply line of a first type and the coupling with the second slot is implemented in an electrical plane (T2) of the supply line of a second type, the supply line having, at its free end, a control element (4) comprising two states allowing the type of electrical plane at the coupling points of the line with the first and second slots to be modified, the slots being positioned with respect to the supply line such that only one of them radiates for a given state of the control element. <??>This antenna can operate in at least two frequency bands such as that around 2.4 GHz and that around 5 GHz. <IMAGE> |
