Abstract: A first plastic recyclate is used for a tube of a land vehicle, in particular of a road vehicle. The tube comprises a first layer and a second layer, wherein the first layer and the second layer abut against each other. The first layer has the first plastic recyclate, wherein the second layer comprises a first virgin plastic. The first plastic recyclate and the first virgin plastic belong to the same plastic species, for example to the plastic species of polyamides or the plastic species of polyolefins.

Abstract: A tube and use of a tube for guiding hydrogen, preferably in a vehicle. The tube encloses a lumen and comprises several layers, wherein the layers of the tube includes at least two barrier layers. An inner barrier layer comprises a first plastic, and an outer barrier layer comprises a second plastic. The barrier layers are separated from each other by a separating layer, and the tube has a supporting layer enclosed by the inner barrier layer. The first plastic is a vinyl alcohol plastic, and the second plastic is a vinyl alcohol plastic.

Abstract: Multilayered motor vehicle tube, wherein the tube has at least five layers with the following layer structure from the outside to the inside: An outer layer made of at least one polymer from the group “polyamide, polyolefin,” a first carrier layer made of polyamide, a barrier layer made of at least one component from the group “ethylene vinyl alcohol copolymer (EVOH), fluoropolymer,” a second carrier layer made of polyamide, an inner layer made of a thermoplastic polyurethane (TPU). The total layer thickness of the tube is 0.7 to 2 mm.

Abstract: Use of tubing as temperature control tubing in motor vehicles, wherein a temperature control medium is passed through the tubing. The tubing has the following layer structure from the outside inward: an exterior layer of at least one polyolefin, a first adhesive barrier, a barrier layer of at least one polyamide, a second adhesive barrier and an interior layer of at least one polyolefin. The entire wall thickness of the tubing is 0.5 to 3.5 mm.

Abstract: Multi-layer motor vehicle tube for conducting at least one fluid medium, in particular for conducting of motor fuels, wherein the tube comprises at least five layers, The tube features the following layer structure, from outside to inside: an outside layer made of at least one polyamide, a first adhesion-promoting layer, a barrier layer with barrier properties, a second adhesion-promoting layer, an inside layer made of at least one thermoplastic polyurethane (TPU) and/or at least one partly aromatic polyamide (PPA). The total layer thickness of the tube amounts to 0.7 to 3 mm.

Abstract: A wireless transmitter is disclosed. The wireless transmitter includes a digital signal generator arranged to generate a digital signal for transmission, a digital-to-analog converter arranged to convert the digital signal for transmission into analog form and a non-ideal amplifier arranged to amplify the analog signal for transmission. At least one harmonic reduction signal generator is arranged to generate at least one digital harmonic reduction signal and a summing junction is arranged to add the digital signal for transmission with the at least one harmonic reduction signal to form a combined signal. The non-ideal amplifier amplifies the combined signal to form an analog output signal. A controller is coupled to the digital signal generator and the at least one harmonic reduction signal generator.

Abstract: Use of tubing as temperature control tubing in motor vehicles, wherein a temperature control medium is passed through the tubing. The tubing has the following layer structure from the outside inward: an exterior layer of at least one polyolefin, a first adhesive barrier, a barrier layer of at least one polyamide, a second adhesive barrier and an interior layer of at least one polyolefin. The entire wall thickness of the tubing is 0.5 to 3.5 mm.

Abstract: A wireless transmitter is disclosed. The wireless transmitter includes a digital signal generator arranged to generate a digital signal for transmission, a digital-to-analog converter arranged to convert the digital signal for transmission into analog form and a non-ideal amplifier arranged to amplify the analog signal for transmission. At least one harmonic reduction signal generator is arranged to generate at least one digital harmonic reduction signal and a summing junction is arranged to add the digital signal for transmission with the at least one harmonic reduction signal to form a combined signal. The non-ideal amplifier amplifies the combined signal to form an analog output signal. A controller is coupled to the digital signal generator and the at least one harmonic reduction signal generator.

Abstract: In one embodiment, a circuit, having a single supply, is provided to transmit a wireless signal with low common mode electromagnetic interference (EMI) emission. The circuit can achieve common mode attenuations of 40 dB or greater as a result of the symmetric built circuit. Also included is a system that includes a transmission circuit and a receiver circuit, and a method of using such a system.

Abstract: In one embodiment, a circuit, having a single supply, is provided to transmit a wireless signal with low common mode electromagnetic interference (EMI) emission. The circuit can achieve common mode attenuations of 40 dB or greater as a result of the symmetric built circuit. Also included is a system that includes a transmission circuit and a receiver circuit, and a method of using such a system.

Abstract: In a data carrier (2) for contactless communication of storage data (SD) with a reader station (1), a recovery device (13) is provided, with which, following an unexpected abort of the storing of storage data (SD) in a memory (11) by virtue of a lack of supply voltage, a valid storage state can be restored in memory (11). For this purpose, any storage locations that are only weakly stored in memory (11) will be read, and the read-out storage data (SD) will be re-stored in the memory (11).

Abstract: In a data carrier (2) for contactless communication of storage data (SD) with a reader station (1), a recovery device (13) is provided, with which, following an unexpected abort of the storing of storage data (SD) in a memory (11) by virtue of a lack of supply voltage, a valid storage state can be restored in memory (11). For this purpose, any storage locations that are only weakly stored in memory (11) will be read, and the read-out storage data (SD) will be re-stored in the memory (11).

Abstract: In a communication arrangement (1) provided for transmitting data (DA) to a transponder (2) which arrangement includes a data source (5) for delivering data (DA) and includes a carrier signal generator (6) for generating a carrier signal (CS) and includes modulation means (7) to which can be applied the data (DA) and the carrier signal (CS) and which modulation means are provided for modulating a carrier signal (CS) in accordance with the data (DA) and for delivering a modulated carrier signal (CSM) to transmitting means (8) having an input resistance (9), the modulation means (7) have a changeable output resistance (10) which forms a resistance network together with the input resistance (9) of the transmitting means (8), and resistance change means (25) for changing the output resistance (10) in accordance with the data (DA).

Abstract: In order to prevent the retrieval of data via the measurement of the power consumption in a data carrier provided with a data processing device, it is proposed to connect a load circuit to the power supply of the data carrier so as to influence the power consumption of the data carrier at least during security-relevant operations of the data processing device.

Abstract: A transmitting/receiving station is operable in a transmitting mode and a receiving mode. The transmitting/receiving station has a transmission coil circuit with a transmission coil and conductor having a given characteristic impedance, a first end, and a second end. The conductor has its second end connected to the transmission coil circuit and has its first end connected to transmitter means for generation of a request signal and to receiver for receiving an answer signal. Additional circuits are provided in order to guarantee that the first end of the conductor has a matched termination during the receiving mode.

Abstract: In a system for the transmission of data between at least one write/read station and a plurality of data Carriers, inductive coupling is used to transmit energy and clock pulses from the write/read station to the data carrier. Data is transmitted either in the opposite direction only or bidirectionally. The data carrier in accordance with the invention is provided with a random number generator (6) which can store a random number in a memory (3), preferably under the control of the write/read station. If this random number forms part of the code to be transmitted by the data carrier, a so-called rolling code access control system can be simply implemented, that is to say an access control system in which the codes are changed at regular intervals.

Abstract: In a transponder communication device (1) having a selector for the successive individual selection of transponders (2) the selector having interrogator (5) for generating at least one item of interrogation information (AFI) with which the transponders (2) can be interrogated to transmit answer information (AWI) in response to the interrogation information (AFI), and time-window generator (17) for generating a series of K successive time windows (ZF) and controller (20) for the time-window generator (17), which controller can activate the time-window generator (17) so as to generate the series F of K time windows (ZF) a number of times in succession, and evaluator (22) which cooperates with the time-window generator (17) and by which, depending on the occurrence of at least one item of answer information (AWI) transmitted to the transponder communication device (1) by a transponder (2) in response to interrogation information (AFI), a transponder (2) can be selected in at least one time window (ZF) in each se

Abstract: A transmission and receiving device for contact data transmission between the device and a transponder. The transmission and receiving device has an antenna resonant circuit, a synchronous demodulator, a measuring unit, a control unit, and a reference signal generator. In operation, the device and the transponder are inductively coupled to each other through the antenna resonance circuit of the device and an antenna resonance circuit in the transponder. In response to an interrogation by the device, the transponder sends a load modulated digital signal to the device. The synchronous demodulator detects digital response data contained in the load modulated digital signal. The measuring unit measures a phase shift between a reference signal generated by the reference signal generator and a resonance signal generated in the antenna resonance circuit in the device by the sent load modulated digital signal.