Abstract: A testing front end module for testing a plurality of devices under test (DUT) includes a testing signal interface, a vector signal generator (VSG) coupled to the testing signal interface and configured to generate testing signals upon reception of testing routine signals from a remote controller via the testing signal interface, a vector signal analyser (VSA) coupled to the testing signal interface and configured to receive testing response signals from a plurality of DUTs and to transmit the received testing response signals to the remote controller via the testing signal interface, a multiplexer/demultiplexer (MUX/DEMUX) coupled to the VSG and the VSA, the MUX/DEMUX being configured to multiplex the received testing response signals and to demultiplex the generated testing signals, and a test device interface coupled to the MUX/DEMUX and configured to couple the testing front end module to the plurality of DUTs.

Abstract: A switch-extender is connected to a measurement system and to several DUTs. It splits a signal from the measurement system into several signals so that the several DUTs receive the same signal and can therefore be tested in parallel. The switch-extender further includes at least one amplifier and/or at least one attenuator for every output port so that every signal has the same signal level no matter what the individual attenuation factor of the signal connectors or of the internal printed circuit board is. Furthermore a method for calibrating the measurement system as well as for the switch-extender and the signal connectors describes how to obtain the needed calibration values both for the downlink path and for the uplink path without changing the signal connector.

Abstract: A switch-extender is connected to a measurement system and to several DUTs. It splits a signal from the measurement system into several signals so that the several DUTs receive the same signal and can therefore be tested in parallel. The switch-extender further includes at least one amplifier and/or at least one attenuator for every output port so that every signal has the same signal level no matter what the individual attenuation factor of the signal connectors or of the internal printed circuit board is. Furthermore a method for calibrating the measurement system as well as for the switch-extender and the signal connectors describes how to obtain the needed calibration values both for the downlink path and for the uplink path without changing the signal connector.

Abstract: A housing for electronic components comprising at least one hardware module and a frame. The hardware module comprises a mounting element, wherein the frame connects the at least one hardware module through the mounting element mechanically stable to the housing. A labeling element is attached to the mounting element and the housing has at least one viewing opening so that at least one part of the labeling element can be seen from the outside of the housing.

Abstract: An antenna coupler for testing a mobile-radio device with a coupling element formed in a flat manner by strip conductors on a printed-circuit board and with a retaining device formed on a first side of the printed-circuit board for positioning a mobile-radio device in the vicinity of the coupling element. On the first side of the printed-circuit board, at least one slit structure is introduced into an ground metallization formed there. For feeding the slit structure serving as the coupling element, at least one stripline formed on the second side facing away from it forms a microstripline with the ground metallization remaining between the slit structure of the first side.

Abstract: A housing for electronic components comprising at least one hardware module and a frame. The hardware module comprises a mounting element, wherein the frame connects the at least one hardware module through the mounting element mechanically stable to the housing. A labeling element is attached to the mounting element and the housing has at least one viewing opening so that at least one part of the labeling element can be seen from the outside of the housing.

Abstract: A method and a measuring device for synchronizing measuring channel assemblies are provided. A reference signal is produced by a reference signal source. The reference signal is supplied to the individual measuring channel assemblies of the measuring device. A clock signal generator is used to produce a clock signal at a low frequency, the clock signal generator being connected to each measuring channel assembly by a respective connecting line of the same length. The clock signal is supplied through a phase corrector element for the purpose of correcting the phase of the reference signal in each measuring channel assembly to the phase of the clock signal.

Abstract: The invention relates to a measuring device having at least one first assembly and at least one second assembly. The first assembly and the second assembly each comprise an intermediate frequency interface or a complex baseband interface. The intermediate frequency interfaces or baseband interfaces are designed as serial digital interfaces.

Abstract: A switch-extender is connected to a measurement system and to several DUTs. It splits a signal from the measurement system into several signals so that the several DUTs receive the same signal and can therefore be tested in parallel. The switch-extender further includes at least one amplifier and/or at least one attenuator for every output port so that every signal has the same signal level no matter what the individual attenuation factor of the signal connectors or of the internal printed circuit board is. Furthermore a method for calibrating the measurement system as well as for the switch-extender and the signal connectors describes how to obtain the needed calibration values both for the downlink path and for the uplink path without changing the signal connector.

Abstract: The invention relates to an electronic assembly comprising a plurality of electronic component groups and a cooling device for cooling the electronic component groups. The cooling device provides a cooling-power distributor. A cooling power of the cooling device can be individually controlled by the cooling-power distributor for every component group. Furthermore, the assembly provides temperature-registering means for every component group for registering a temperature of every component group, and a load-determining device for determining a parameter for every component group which describes the load experienced by a component group on the basis of the temperature registered for this component group. A control unit controls the cooling-power distributor on the basis of the parameters determined for the component groups.

Abstract: The invention relates to a switching device for the alternate connection of at least one first test port or of a second test port to a measuring-device connection, where the measuring-device connection provides at least one test-signal input. The test-signal input is connected to a first signal path and to a second signal path, where the first signal path is connected alternately to the first or to the second test port, and the second signal path is connected at least to the respectively other test port.

Abstract: A circuit for signal conditioning including a first stage with a digital/analog converter, a second stage with an I/Q-modulator, and at least one third stage with a mixer. Instead of a multiplicity of independent oscillators, a shared oscillator is provided for the first, second, and third stages, from an output signal of which a respective oscillator signal and clock-pulse signal for each stage of the first, second, and third stages is derived. The oscillator signal and respective clock-pulse signal of the oscillator are supplied via a frequency divider to at least one stage of the first, second, and third stages, or the oscillator signal of the oscillator is supplied via a frequency multiplier to at least one stage. Also, the oscillator signal of the oscillator is supplied as a reference signal to a frequency synthesizer of at least one stage of the first, second, and third stages.

Abstract: An antenna coupler for testing a mobile-radio device with a coupling element formed in a flat manner by strip conductors on a printed-circuit board and with a retaining device formed on a first side of the printed-circuit board for positioning a mobile-radio device in the vicinity of the coupling element. On the first side of the printed-circuit board, at least one slit structure is introduced into an ground metallization formed there. For feeding the slit structure serving as the coupling element, at least one stripline formed on the second side facing away from it forms a microstripline with the ground metallization remaining between the slit structure of the first side.

Abstract: A method and a measuring device for synchronizing measuring channel assemblies are provided. A reference signal is produced by a reference signal source. The reference signal is supplied to the individual measuring channel assemblies of the measuring device. A clock signal generator is used to produce a clock signal at a low frequency, the clock signal generator being connected to each measuring channel assembly by a respective connecting line of the same length. The clock signal is supplied through a phase corrector element for the purpose of correcting the phase of the reference signal in each measuring channel assembly to the phase of the clock signal.

Abstract: The invention relates to a switching device for the alternate connection of at least one first test port or of a second test port to a measuring-device connection, where the measuring-device connection provides at least one test-signal input. The test-signal input is connected to a first signal path and to a second signal path, where the first signal path is connected alternately to the first or to the second test port, and the second signal path is connected at least to the respectively other test port.

Abstract: The invention relates to a measuring device having at least one first assembly and at least one second assembly. The first assembly and the second assembly each comprise an intermediate frequency interface or a complex baseband interface. The intermediate frequency interfaces or baseband interfaces are designed as serial digital interfaces.

Abstract: A circuit for signal conditioning including a first stage with a digital/analog converter, a second stage with an I/Q-modulator, and at least one third stage with a mixer. Instead of a multiplicity of independent oscillators, a shared oscillator is provided for the first, second, and third stages, from an output signal of which a respective oscillator signal and clock-pulse signal for each stage of the first, second, and third stages is derived. The oscillator signal and respective clock-pulse signal of the oscillator are supplied via a frequency divider to at least one stage of the first, second, and third stages, or the oscillator signal of the oscillator is supplied via a frequency multiplier to at least one stage. Also, the oscillator signal of the oscillator is supplied as a reference signal to a frequency synthesizer of at least one stage of the first, second, and third stages.

Abstract: The invention relates to an antenna coupler (1) for testing mobile transmitters and/or receivers, in particular mobile telephones (2). Said coupler has a receiving element (4) and/or a bearing surface (20) for the mobile transmitter and/or receiver and at least one antenna element (5, 25, 35). According to the invention, the antenna element (5, 25, 35) is configured as a loop that is essentially closed in spatial terms.

Abstract: The invention relates to an antenna coupler (1) for testing mobile transmitters and/or receivers, in particular mobile telephones (2). Said coupler has a receiving element (4) and/or a bearing surface (20) for the mobile transmitter and/or receiver and at least one antenna element (5, 25, 35). According to the invention, the antenna element (5, 25, 35) is configured as a loop that is essentially closed in spatial terms.

Abstract: For generating an RF signal modulated by a message and distorted by a predetermined fading profile for testing RF receivers, a sequence of digital phase and amplitude values which corresponds to the message modulation is arithmetically processed by a predetermined fading profile and stored in memory, and an RF carrier is amplitude and phase modulated by the stored values to produce a testing signal for the RF receivers.