Abstract: An active antenna device includes a terminal for receiving a signal to be transmitted, and an antenna for generating a radio signal based on the signal to be transmitted. The active antenna device further includes a controller that is configured to control the antenna depending on the intended properties of the radio signal. The active antenna device includes a coupler between the terminal and the antenna that is configured to decouple a signal portion from the signal to be transmitted. The active antenna device further includes an energy converter that is connected between the coupler and the controller and configured to provide a power signal for the operation of the controller based on the decoupled signal portion.

Abstract: Embodiments of the present invention provide a device for monitoring access to a storage area of a plurality of storage areas for goods, including a measurement signal generation, detection, and evaluator. The measurement signal generator includes a signal source and a conductor loop arrangement, the detector for detecting the generated magnetic field is configured to provide a measurement signal on the basis of the detected magnetic field, and the evaluator for evaluating the measurement signal is configured to determine an instance of access to one of the storage areas on the basis of the measurement signal, to compare a determined instance of access with a target access instance, and to output a display signal on the basis of the comparison.

Abstract: An active antenna device includes a terminal for receiving a signal to be transmitted, and an antenna for generating a radio signal based on the signal to be transmitted. The active antenna device further includes a controller that is configured to control the antenna depending on the intended properties of the radio signal. The active antenna device includes a coupler between the terminal and the antenna that is configured to decouple a signal portion from the signal to be transmitted. The active antenna device further includes an energy converter that is connected between the coupler and the controller and configured to provide a power signal for the operation of the controller based on the decoupled signal portion.

Abstract: Embodiments of the present invention provide a device for monitoring access to a storage area of a plurality of storage areas for goods, including a measurement signal generation, detection, and evaluator. The measurement signal generator includes a signal source and a conductor loop arrangement, the detector for detecting the generated magnetic field is configured to provide a measurement signal on the basis of the detected magnetic field, and the evaluator for evaluating the measurement signal is configured to determine an instance of access to one of the storage areas on the basis of the measurement signal, to compare a determined instance of access with a target access instance, and to output a display signal on the basis of the comparison.

Abstract: A wireless location system for energizing and/or determining location information indicative of a location of at least one transceiver tag (2) of a plurality of transceiver tags distributed within a tracking area, the transceiver tags being operable to wirelessly transmit an identification signal when an energizing electromagnetic signal is present at the location of the transceiver tag, comprises at least one mobile energizer node (4) comprising a transmitter (24) operable to transmit the energizing electromagnetic signal for the at least one transceiver tag (2). The mobile energizer node (4) is mounted on a movable device (6). At least one receiver (10) is operable to receive the identification signal from the transceiver tags and at least one location evaluator (14) is operable to determine the location information using a location of the mobile energizing node (4) and/or a signal characteristic of the received identification signal of the at least one transceiver tag (2).