Abstract: A method and a device for combined signal transmission or for combined signal transmission and energy transfer, in particular a portable electronic terminal. The device has at least one coil structure for producing a first electromagnetic field for energy transfer or for signal transmission, wherein the device also has at least one antenna structure for additional signal transmission. The antenna structure has a first partial structure and a second partial structure. The first partial structure is designed and/or is arranged in relation to the second partial structure in such a way that signals in a first frequency range can be received and transmitted by the antenna structure. At least the first partial structure is arranged adjacent to the at least one coil structure in a projection plane oriented perpendicular to a central axis of the coil structure.

Abstract: A method operates a signal coupling device. The signal coupling device contains at least one signal branch section which is or can be connected to a terminal-side interface of the signal coupling device using signaling. At least one signal property of a signal applied to the at least one signal branch section is determined. A signal type is determined on the basis of the at least one signal property. A time duplexing signal or a frequency duplexing signal is determined as the signal type. A signal-type-specific connection is established between the terminal-side interface and an antenna-side interface of the signal coupling device.

Abstract: A method for detecting oscillation in a signal coupling device includes at least one oscillation detection step. The oscillation detection step includes the steps of determining an undamped signal level of a signal on a signal path of the signal coupling device in a first step, reducing a gain of the signal path in a second step, and determining a damped signal level of the signal on the signal path and a deviation between the undamped signal level and the damped signal level at least once in a third step. An oscillation is detected if at least one deviation determined in the third step of the at least one oscillation detection step is higher than or equal to a predetermined oscillation threshold value. A device for detecting oscillation in a signal coupling device and a signal coupling device are also provided.

Abstract: A signal coupling apparatus for transmitting transmission signals between a terminal and an antenna includes a terminal-side interface, at least one attenuation device and at least one connection signal arm for connecting the terminal-side interface with the attenuation device. At least a first transmission activity detection device is coupled with the connection signal arm for signaling purposes. The first transmission activity detection device is capable of generating a protection signal for controlling the attenuation device if a transmission power of a transmission signal is greater than a predetermined power. There is also described a method for operating such a signal coupling apparatus.

Abstract: A method for detecting oscillation in a signal coupling device includes at least one oscillation detection step. The oscillation detection step includes the steps of determining an undamped signal level of a signal on a signal path of the signal coupling device in a first step, reducing a gain of the signal path in a second step, and determining a damped signal level of the signal on the signal path and a deviation between the undamped signal level and the damped signal level at least once in a third step. An oscillation is detected if at least one deviation determined in the third step of the at least one oscillation detection step is higher than or equal to a predetermined oscillation threshold value. A device for detecting oscillation in a signal coupling device and a signal coupling device are also provided.

Abstract: A method and a device for combined signal transmission or for combined signal transmission and energy transfer, in particular a portable electronic terminal. The device has at least one coil structure for producing a first electromagnetic field for energy transfer or for signal transmission, wherein the device also has at least one antenna structure for additional signal transmission. The antenna structure has a first partial structure and a second partial structure. The first partial structure is designed and/or is arranged in relation to the second partial structure in such a way that signals in a first frequency range can be received and transmitted by the antenna structure. At least the first partial structure is arranged adjacent to the at least one coil structure in a projection plane oriented perpendicular to a central axis of the coil structure.

Abstract: A method operates a signal coupling device. The signal coupling device contains at least one signal branch section which is or can be connected to a terminal-side interface of the signal coupling device using signaling. At least one signal property of a signal applied to the at least one signal branch section is determined. A signal type is determined on the basis of the at least one signal property. A time duplexing signal or a frequency duplexing signal is determined as the signal type. A signal-type-specific connection is established between the terminal-side interface and an antenna-side interface of the signal coupling device.

Abstract: A retaining device for a terminal which can be coupled in a wireless manner. The retaining device has at least one stand part and at least one movable part. The stand part has at least one bearing surface for the terminal, and the retaining device is formed with at least one conductor structure arranged on the stand side. The movable part has at least one pushing element, the movable part being fixed to the stand part in a movable manner such that a variable distance can be set between the bearing surface and the pushing element. A method for producing a retaining device is described as well.