Abstract: A device includes an antenna array with at least four antennas, wherein each antenna has its own feeder line terminal, wherein the feeder line terminals of antennas arranged directly adjacent to one another are geometrically offset from one another by 90° in each case. The device further includes a control device configured to feed the individual antennas via their respective feeder line terminals such that the antenna array exhibits different radiation patterns at different points in time. A first radiation pattern shows a polarized field distribution. According to the invention, a second radiation pattern exhibits an unpolarized field distribution.

Abstract: A transceiver for distance measurements between the transceiver and an apparatus is provided. The transceiver has a transmitter configured to emit a first signal portion to be emitted at a first center frequency and a second signal portion to be emitted at a second center frequency so that the first signal portion to be emitted is radiated back from the apparatus to the transceiver as a first reflected signal portion and so that the second signal portion to be emitted is radiated back from the apparatus to the transceiver as a second reflected signal portion. In addition, the transceiver has a receiver configured to receive the first reflected signal portion radiated back from the apparatus to the transceiver and the second reflected signal portion radiated back from the apparatus to the transceiver. Furthermore, the transceiver has a measuring module configured to determine a distance between the transceiver and the apparatus.

Abstract: A transceiver for distance measurements between the transceiver and an apparatus is provided. The transceiver has a transmitter configured to emit a first signal portion to be emitted at a first center frequency and a second signal portion to be emitted at a second center frequency so that the first signal portion to be emitted is radiated back from the apparatus to the transceiver as a first reflected signal portion and so that the second signal portion to be emitted is radiated back from the apparatus to the transceiver as a second reflected signal portion. In addition, the transceiver has a receiver configured to receive the first reflected signal portion radiated back from the apparatus to the transceiver and the second reflected signal portion radiated back from the apparatus to the transceiver. Furthermore, the transceiver has a measuring module configured to determine a distance between the transceiver and the apparatus.

Abstract: The invention relates to an apparatus for communicating with a transponder. The apparatus includes a transmit apparatus, a receive apparatus and an evaluation apparatus. The transmit apparatus transmits a transmit signal to the transponder. Based on a signal emitted by the transponder, the receive apparatus receives a receive signal. Based on the transmit signal and/or a signal portion, the evaluation apparatus evaluates the receive signal with respect to data errors. Further, the invention relates to a respective method as well as to a system for communicating.

Abstract: Embodiments relate to a transceiver configured to send a send signal to a radio module having a backscatter modulator or a load modulator, the send signal including two different signal portions based on mutually independent signals or signal sources.

Abstract: A device includes an antenna array with at least four antennas, wherein each antenna has its own feeder line terminal, wherein the feeder line terminals of antennas arranged directly adjacent to one another are geometrically offset from one another by 90° in each case. The device further includes a control device configured to feed the individual antennas via their respective feeder line terminals such that the antenna array exhibits different radiation patterns at different points in time. A first radiation pattern shows a polarized field distribution. According to the invention, a second radiation pattern exhibits an unpolarized field distribution.

Abstract: The invention relates to an apparatus for communicating with a transponder. The apparatus includes a transmit apparatus, a receive apparatus and an evaluation apparatus. The transmit apparatus transmits a transmit signal to the transponder. Based on a signal emitted by the transponder, the receive apparatus receives a receive signal. Based on the transmit signal and/or a signal portion, the evaluation apparatus evaluates the receive signal with respect to data errors. Further, the invention relates to a respective method as well as to a system for communicating.

Abstract: Embodiments relate to a transceiver configured to send a send signal to a radio module having a backscatter modulator or a load modulator, the send signal including two different signal portions based on mutually independent signals or signal sources.

Abstract: An antenna arrangement has an inductive transmitting antenna having a main radiating axis, an inductive receiving antenna having a main receiving axis, and an inductive compensator. The inductive receiving antenna is arranged in the main radiating axis of the transmitting antenna. The inductive compensator is electrically connected in series to the receiving antenna and is arranged in a first plane which intersects a second plane. The main receiving axis of the receiving antenna here is normal to the second plane.

Abstract: A passive transponder includes an antenna, an antenna oscillator circuit and a data source. The antenna oscillator circuit is configured to operate at a first resonant frequency or at a second resonant frequency, depending on reception of energy at the transponder or on a data transmission from/to the data source.

Abstract: An antenna device has an inductive transmitting antenna having a main radiation direction, a plurality of spaced apart, adjacent conductors and a reference potential terminal. The plurality of spaced apart, adjacent conductors is connected to the reference potential terminal and arranged in a predetermined distance from the transmitting antenna along the main radiation direction in a plane antiparallel to the main radiation direction.

Abstract: An antenna arrangement has an inductive transmitting antenna having a main radiating axis, an inductive receiving antenna having a main receiving axis, and an inductive compensator. The inductive receiving antenna is arranged in the main radiating axis of the transmitting antenna. The inductive compensator is electrically connected in series to the receiving antenna and is arranged in a first plane which intersects a second plane. The main receiving axis of the receiving antenna here is normal to the second plane.

Abstract: A passive transponder includes an antenna, an antenna oscillator circuit and a data source. The antenna oscillator circuit is configured to operate at a first resonant frequency or at a second resonant frequency, depending on reception of energy at the transponder or on a data transmission from/to the data source.

Abstract: The present invention relates to a transponder reading device for reading out a plurality of inductive passive transponders having a resonant circuit. A transmitter is provided to create an alternating magnetic field having an operating frequency fB, in which the number of transponders may be placed such that same are magnetically coupled to each other. A retuning means is further provided which is arranged in the alternating magnetic field and has such a frequency-dependent impedance that a voltage induced in the resonant circuits of the transponders by the alternating magnetic field has a maximum in the range of the operating frequency fB.

Abstract: The present invention relates to a transponder reading device for reading out a plurality of inductive passive transponders (50) having a resonant circuit. A transmitter coil (62) is provided to create an alternating magnetic field having an operating frequency fB, in which the number of transponders (50) may be placed such that same are magnetically coupled to each other. A retuning means (56) is further provided which is arranged in the alternating magnetic field and has such a frequency-dependent impedance that a voltage induced in the resonant circuits of the transponders (50) by the alternating magnetic field has a maximum in the range of the operating frequency fB.