Abstract: A device transmits and receives radio signals, in particular radio signals in a cellular radio network. The device contains a first transmitting antenna for transmitting radio signals and a second receiving antenna. The antennas transmit and/or receive radio signals in different frequency ranges. The antennas are connected to a common cable connection via a radio signal splitter, by which cable connection the device can be connected to a radio terminal. The device contains a first radio signal amplifier disposed in a first radio signal path and/or a second radio signal amplifier disposed in a second radio signal path. The transmitting antenna and the receiving antenna have attenuation with respect to feedback of a radio signal transmitted from the transmitting antenna to the receiving antenna due to the arrangement thereof relative to each other and due to the transmitting and/or receiving characteristics thereof.

Abstract: The invention relates to a multi-band, multi-part circuit arrangement for compensating the attenuation of HF wireless signals in the signal paths between a transmitting and receiving device and an external antenna. The circuit arrangement comprises power amplifiers, receiving amplifiers, at least one splitter, at least one combiner, duplexers and frequency and/or band filters, HF switching means as well as a detector circuit for the detection of transmission signals from the transmitting and receiving device and for providing control signals for the HF switching means.

Abstract: A method and system for connecting signal paths in a circuit arrangement with multiband capability for processing and/or influencing signals in radio communication, on the basis of which at least the transmission paths of a corresponding circuit arrangement are activated or deactivated on the basis of the presence of a transmitted signal from a terminal which is operated with the circuit arrangement. The transmission paths, which are deactivated in a basic state of the circuit arrangement, are periodically checked in succession for the presence of a transmitted signal from the terminal with a multiplexer that forms a functional component of a detection unit and that is switched through by a controller for sequential scanning of the transmission paths for the presence of such a transmitted signal. If a signal is present, only a transmission path for the correct frequency band of the transmitted signal is activated and continuously checked for the presence of a transmitted signal.

Abstract: A detection circuit has a detector unit for detecting a transmitted signal from a mobile radio terminal. The detection circuit forms a part of a circuit arrangement for processing or influencing received signals and transmitted signals associated with the mobile radio terminal (accessory circuit). It is involved in the accessory circuit via a switching means, which is arranged in a transmission path upstream of at least one transmission power amplifier which can be activated upon detection of a transmitted signal, and is coupled to the transmission path via a coupling element which is arranged downstream of the transmission power amplifier. At the start of the transmission burst, the whole power of the transmitted signal is first of all supplied to the detector unit before said detector unit changes over the transmitted signal to the transmission power amplifier by operating the switching means.

Abstract: The invention relates to a multi-band, multi-part circuit arrangement for compensating the attenuation of HF wireless signals in the signal paths between a transmitting and receiving device and an external antenna. The circuit arrangement comprises power amplifiers, receiving amplifiers, at least one splitter, at least one combiner, duplexers and frequency and/or band filters, HF switching means as well as a detector circuit for the detection of transmission signals from the transmitting and receiving device and for providing control signals for the HF switching means.

Abstract: The invention relates to an arrangement for transmitting signals via an antenna feed line in a mobile subscriber station, particularly in a vehicle, such as, for example, a road motor vehicle, whereby the arrangement has an antenna feed line and a signal amplifier to amplify the signals. It is proposed to set the overall amplification of the signals which are transmitted between an external antenna of the mobile subscriber station and a mobile subscriber device (95) and/or vice versa depending on a connection attenuation which is produced by connecting the mobile subscriber device (95) to the antenna feed line (setting device 37, 73). The connection can be established in particular in a wireless manner via an antenna coupler (93) which is disposed in an electromagnetically screening housing to accommodate the subscriber device.

Abstract: The invention concerns a circuit arrangement for compensation of attenuation in an antenna lead for a mobile wireless device. The circuit arrangement is suitable for operation in a wireless network, in which the higher or the lower of two frequency ranges defined in one frequency band is used selectively for transmitting and the other frequency range is used for receiving the wireless signals within the one frequency band.

Abstract: The invention concerns a circuit arrangement for the operation of transmitting and receiving devices (T/R devices) at an antenna. A plurality of T/R devices can be operated for the most part without loss relative to the transmission and receiving powers and almost without mutual influencing of the signal branches of the devices by means of this circuit arrangement. For this purpose, circuit modules for compensation of attenuation (compensators) are disposed between the common antenna and each T/R device. All transmitting and receiving branches of the compensator are connected with the antenna by means of one interconnection unit. The transmitting branches are brought together via passive combiners with the interconnection of an isolator in each case, whereby the output power of their transmission amplifiers is increased in order to equilibrate the attenuation in the combiners.

Abstract: The invention concerns a circuit arrangement for compensation of attenuation in an antenna lead for a mobile wireless device.