Extra flat circle polarization antenna, in particular for a in a motor vehicle built-in remote control

摘要

a kreispolarisationsantenne, in particular for a motor vehicle in a built-in remote control, includes a first winding (l1), a second winding (l2) within the first winding is housed and whose axis is essentially perpendicularly to the axis, but not exactly the first w development orientation, and a third erregerwicklung (l3)the coaxial with the second winding is connected with the first and the second winding on abstimmkondensatoren (c1, c2) that are closed, that the transmission with 90 degrees phase difference is $a - with the first winding (l1) on a hohldorn is trained, the lu00e4ngsabmessung in essence, is smaller than the querabmessungen,$a - with the second winding (l2) on a staff is trained, the lu00e4ngsabmessung essentially larger than the querabmessungen and whose cross-section has a elongated shape, whose smallest dimension at most as large as the lu00e4ngsabmessung of dorns, during the so-called staff equal to its both ends on the thorn on.the antenna according to the invention, $a is characterized by the fact that the burr (2) is trained and the circular rod (1) over the entire length of the inside diameters of the annular dorns extend.