Antenna arrangement for mobile radiotelephones
- verfasst von
- Achim Bahr, Dirk Manteuffel, Jose Marie Baro
- Abstract
A flat antenna arrangement (plate antenna arrangement, patch antenna arrangement) with an earth plate and a radiator that is disposed at a distance essentially parallel to the earth plate and is conductively connected to the latter by one of its end regions, wherein, at a first (lower) resonant frequency of the antenna arrangement, a voltage minimum is present at the connection of the radiator to the earth plate and in the region of the other end (unsupported end) of the radiator a first voltage maximum is present, is characterized in that there is disposed between the radiator (3) and the earth plate (2) near the unsupported end of the radiator (3) a settable switch element (11) that is designed in such a way that it is capable of making a connection having a low impedance, and in that the point at which the switch element is connected to the radiator (3) is disposed in such a way that, with the switch element (11) set to conduct, the radiator (3) has a desired second resonant frequency that is higher than the first resonant frequency. It is advantageous that the entire or almost the entire radiator radiates in the two frequency ranges.
- Organisationseinheit(en)
-
Institut für Hochfrequenztechnik und Funksysteme
- Externe Organisation(en)
-
Alcatel-Lucent S.A.
- Typ
- Patent
- Publikationsdatum
- 27.12.2001
- Publikationsstatus
- Veröffentlicht
