Abstract: In a window-integrated antenna in a vehicle, conductor configurations are provided for FM (LFM) reception as well as for AM (LAM) reception which are separated with respect to RF from the heating circuit (B) via decoupling and matching circuits (EA1, EA2). The second decoupling and matching circuit (EA2) in the AM circuit is situated downstream from the first decoupling and matching circuit (EA1) in the FM circuit and in particular in the shunt circuit of the same. This makes it possible to utilize the FM structures as a supply lead to the AM structure. The filter expense of the second decoupling and matching circuit may be minimized.

Abstract: In a window-integrated antenna in a vehicle, conductor configurations are provided for FM (LFM) reception as well as for AM (LAM) reception which are separated with respect to RF from the heating circuit (B) via decoupling and matching circuits (EA1, EA2). The second decoupling and matching circuit (EA2) in the AM circuit is situated downstream from the first decoupling and matching circuit (EA1) in the FM circuit and in particular in the shunt circuit of the same. This makes it possible to utilize the FM structures as a supply lead to the AM structure. The filter expense of the second decoupling and matching circuit may be minimized.

Abstract: In an antenna diversity device, at least one of the receive bands of the diversity antennas is frequency converted on the antenna side in such a way that the receive bands in the frequency spectrum are next to one another. This enables the diversity signals to be transmitted via a shared transmission medium to the receiver.

Abstract: In a window-integrated antenna in vehicles including a heating conductor field, which is provided for both FM reception as well as LMS reception, a decoupling element for the FM reception is provided which has a high-frequency, low-resistance, but non-galvanic connection to the heating conductor field.

Abstract: A radio apparatus is proposed which makes more flexible use of the antenna possible. The radio apparatus includes a case having a listening device on a first side and an antenna element in a second side opposite the first side. The antenna element is movably mounted on the second side of the case. The antenna element has a directional radiation characteristic in at least one first position and an omnidirectional radiation characteristic in at least one second position.

Abstract: An antenna arrangement (1) is described that can be operated in two different operating frequency ranges. The antenna arrangement includes a radiating element that contains a supply connection and a reference potential connection. The radiating element is resonant in a first operating frequency range and a second operating frequency range that is different from the first and can be supplied via a supply connection using signals either in the first operating frequency range or the second operating frequency range. The reference potential connection is connected via a first impedance to a reference potential of a reference potential surface. The first impedance has a high resistance in a first operating frequency range and has low resistance in the second operating frequency range. In addition, a radio set is described that includes the antenna arrangement.