Abstract: The invention relates to a layered composite (10), in particular for connecting electronic components as joining partners, comprising at least one substrate film (11) and a layer assembly (12) applied to the substrate film. The layer assembly comprises at least one sinterable layer (13), which is applied to the substrate film (11) and which contains at least one metal powder, and a solder layer (14) applied to the sinterable layer (13). The invention further relates to a method for forming a layered composite, to a circuit assembly containing a layered composite (10) according to the invention, and to the use of a layered composite (10) in a joining method for electronic components.

Abstract: A system for wirelessly coupling a radio device (111) via a radio link has a support surface (119) for placing radio device (111) thereon; an antenna in order to produce and maintain wireless coupling of the radio device, or a plurality of antennas (217a, 217b) positioned adjacently which can be selectively operated to produce and maintain wireless coupling of radio device (111). Support surface (119) has a rotationally symmetrical recess (117) extending around an axis of rotation (18) perpendicular to support surface (119), wherein, at different rotational positions relative to the axis of rotation (18), a radio device (111) having a projection (204) which engages in recess (117) can operate a radio link to the antenna, or to one of the antennas (217). Alternatively a radio device rests against support surface (119) and is located in any orientation and any position within a space defined by support surface (7).

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: A transmission system using frequency and time spreading techniques is disclosed. The transmission system allows priority of transmission parameters and adjustment of same in relation to transmission quality and channel characteristics measured in real time.

Abstract: The transceiver according to the invention is a transmitting and receiving device for the transmission of digital signal sequences. Chirp signals are used for signal transmission by way of the air interface, such signals making it possible for the BT-product in the transmission band to be very much greater than the BT-product in the baseband by simultaneous frequency and time spreading. The transmitting and receiving device is distinguished in that chirp signals which are different in respect of the BT-product and/or the time-frequency characteristic can be stored in a memory in order for them to be selectively called up and raised into the transmission frequency band by direct upward conversion. No mirror frequency bands are produced with this procedure so that complicated band pass filters in the carrier frequency position can be eliminated.