| 摘要 |
The invention relates to a frequency-tunable planar antenna supplied with power via a slot. Said antenna includes: a resonant patch (31); a first dielectric layer; a floorplan (33) comprising a first slot (34a, 54a) for each linear polarization; a second dielectric layer; and a transmission line (36, 56) including, for each first slot, an end strand extending under the first slot. The antenna is frequency-tunable for each linear polarization as a result of the variable capacitor element(s). Adapting the antenna varies, for each linear polarization, depending on a polarization voltage applied to the variable capacitor element(s). The antenna includes, for each linear polarization, at least one second slot (34b, 54b) extending along, and having at least a different size from, the first slot. The end wire of the transmission line extends under the first and second slot(s). The (at least one) second slot creates an additional resonance. |
