Abstract: A digital triggering system for processing data relating to a signal received is described, with an analog-to-digital converter, an IQ data source providing IQ data, a first digital signal processor, and at least a second digital signal processor. The first digital signal processor is connected with the IQ data source via a first signal path. The second digital signal processor is connected with the IQ data source via a second signal path. The first digital signal processor has at least a first signal processing parameter. The second digital signal processor has at least a second signal processing parameter. The first signal processing parameter and the second signal processing parameter are independent from each other. The first digital signal processor generates a trigger signal based upon a characteristic of the IQ data obtained from the IQ data source. The first digital signal processor triggers the second digital signal processor via the trigger signal to acquire IQ data obtained from the IQ data source.

Abstract: An electrical measurement system for performing a measurement on a device under test has a main unit, a probe unit connected to the main unit, a first offset generator for generating a first offset influencing the measurement, and a second offset generator for generating a second offset influencing the measurement. The first offset generator has a first analog step size and the second offset generator has a second analog step size. The first and second analog step sizes differ from one another.

Abstract: A test system for testing a wireless device under test in a test chamber. The device under test may be located on a bottom of the test chamber, and a measurement antenna may be mounted on a bottom or a side wall of the test chamber. Further, a reflector may be mounted on a ceiling of the test chamber. Accordingly, a signal path for testing the device under test may be established by reflecting the wireless signals between the device under test and the measurement antenna by the reflector.

Abstract: A measuring device comprises a control unit, a display unit and an input unit. The control unit is configured to control the display unit to display a first content in a first display area and a second content in a second display area. The input unit is configured to allow a user to select one of the first display area, the second display area and no display area. The control unit is then configured to display the first content at least partially transparent, when the first display area is selected, and to display the second content at least partially transparent, when the second display area is selected.

Abstract: A protocol test device for testing protocol compliance of a wireless device under test comprises a wireless interface for transmitting an outgoing RF signal to the wireless device under test and/or for receiving an incoming RF signal from the wireless device under test, a processing unit for generating messages for the outgoing RF signal based on a predefined protocol and for processing messages in the incoming RF signal based on the predefined protocol, a message log memory for storing the generated messages and the received messages, and a summary message generation unit that generates a summary log message and stores the summary log message in the message log memory, wherein the summary log message comprises information about at least one of the generated messages and/or the received messages and repetitions of the respective generated message and/or the respective received message.

Abstract: A method for selectively extracting protocol message content includes creating a template comprising a test scenario having at least one network event to be tested; assigning protocol message features related to the at least one network event to at least one predefined tag as part of the template during creation of the test scenario; providing a field log file including a plurality of measured protocol messages; identifying those protocol messages of the plurality of measured protocol messages of the field log file as relevant protocol messages that comprise features having a specific tag; and extracting from the relevant protocol messages parts of or the entire protocol message content. Further, a network test system is described.

Abstract: A calibration device for calibrating an antenna array is provided. The calibration device comprises a transmitter, which is configured for transmitting a first calibration signal to all antennas of the antenna array, resulting in a plurality of received first calibration signals provided by the antenna array to the calibration device. Moreover, the calibration device comprises a receiver, which is configured for receiving a plurality of second calibration signals from the antennas of the antenna array. Finally, the calibration device comprises an antenna characteristic calculator, which is configured for calculating an antenna characteristic of each individual antenna of the antenna array based on the plurality of received first calibration signals and the plurality of received second calibration signals.

Abstract: A radar simulation device for testing a device under test with respect to at least one radar scenario is provided. The radar simulation device comprises a memory, a radar scenario simulator, and two or more antennas. The memory is configured to store the radar scenario with respect to the device under test, and to provide the radar scenario to the radar scenario simulator. The radar scenario simulator is configured to receive a first number of radar signals from the device under test via the at least two antennas, to simulate the at radar scenario by manipulating the first number of radar signals according to the radar scenario and generating a resulting second number of manipulated radar signals, and to transmit the second number of manipulated radar signals to the device under test via the at least two antennas.

Abstract: The present invention relates to a modular and flexible measurement of radio-frequency signals. For this purpose, the measurement system is separated into a connection device performing digital operations and a radio-frequency signals comprising analogue circuits. The connection device and the radio-frequency device are coupled with each other by appropriate interfaces for exchanging signals, in particular digital signals between the communication device and the radio-frequency device.

Abstract: A test equipment is provided for over the air tests on a device under test, in particular a user equipment, having a shielded space, at least one signal antenna for transmitting and receiving cellular signals arranged in the shielded space, and a plurality of noise antennas arranged in the shielded space linked in an array configured to create Additive White Gaussian Noise. The noise antennas are equally distributed in three dimensions within the shielded space. Further, a method for testing a device under test is shown.

Abstract: An electromagnetic imaging system for creating an image of an object is disclosed. The electromagnetic imaging system comprises at least one transmit antenna, multiple receive antennas, a control unit, a processing unit, and an interference detection unit. The at least one transmit antenna is configured to generate radiofrequency signals with at least one planned frequency at several planned times. The multiple receive antennas are configured to receive radiofrequency signals and to generate a corresponding measurement signal. The control unit is configured to control at least the multiple transmit antennas. The processing unit is configured to process the measurement signal into the image of the object. The interference detection unit is configured to detect and analyze an interference signal in the measurement signal, and the interference detection unit is connected to the control unit in a signal transmitting manner so as to control the control unit.

Abstract: A method for determining a phase center of an antenna under test is described wherein the antenna under test is placed on a positioning unit within an anechoic space of a measurement system, the positioning unit being configured to set the antenna under test in at least one angular orientation. At least the phase of a measurement signal assigned to the antenna under test is determined in dependency of the angular orientation of the antenna under test. The phase center of the antenna under test is determined by using least-square techniques while taking the phase of the measurement signal into account, and an uncertainty of the determination of the phase center is determined based on the outcome of the determination of the phase center of the antenna under test by using the least-square techniques. In addition, a measurement system is described.

Abstract: A system for converting a digital input signal into an analog output signal is provided, the system has at least three different signal paths with different but overlapping frequency ranges, at least three digital-to-analog converters, at least three analog filters, and a combiner unit. Each of the digital-to-analog converters is connected to at least one signal path, wherein the signals transmitted to the digital-to-analog converters are phase coherent. Each of the digital-to-analog converters is connected to a combiner unit, and each of the analog filters is associated with one of the digital-to-analog converters, wherein at least one of the digital-to-analog converters has a lower sampling rate than the sampling rate of at least two others of the digital-to-analog converters. Further, a method for converting a digital input signal into an analog output signal is shown.

Abstract: A measuring system for determining a beamforming quality of an antenna array signal of an antenna array of a device under test. The measuring system comprises a measuring device configured to receive an antenna array signal, and to measure the antenna array signal and to determine a beamforming signal quality thereof. The antenna array signal is wirelessly transmitted to the receiver by the antenna array of a device under test. The measuring system further comprises a positioning unit configured to position the device under test in successive predefined orientations. The measuring device is configured to receive and measure the antenna array signal successively in each of the predefined orientations.

Abstract: A measurement system for measurements of a device under test (DUT) is provided. The measurement system includes a first test antenna configured to send radio frequency (RF) radiation to the DUT and to receive RF radiation sent by the DUT. The system further includes a positioning device, including at least one motor, configured to move the DUT about at least one axis of rotation. The system further includes a geometrical fixture configured to absorb RF radiation and to de-couple or shield the DUT from unintended or spurious RF radiation of one or more of the at least one motor and the first test antenna.

Abstract: A mobile device is used for wireless communication with at least one flying object. The mobile device receives information from a first flying object via an actual communication channel. Furthermore, the mobile device comprises a beamforming unit for forming at least two beams. In addition to this, the beamforming unit is configured to steer a beam of the actual communication channel or an actual communication antenna of the mobile device based on the information received from the first flying object by the mobile device.

Abstract: An over-the-air measurement chamber is provided for performing measurements with respect to a device under test. The over-the-air measurement chamber includes a thermally isolated space inside the over-the-air measurement chamber, a positioner for positioning the device under test, and a first gas guiding means for intake of a gas and a second gas guiding means for outtake of the gas. The positioner comprises an inner portion and an outer rotational unit. The first and second gas guiding means are fed into the inner portion of the positioner through a hollow rotational axis of the outer rotational unit.

Abstract: A test setup for power measurement of a fast switching active antenna array with a beam switching time lower than one microsecond is described. The test setup comprises at least two detector modules for detecting a signal transmitted by the fast switching active antenna array and a power sensor module for measuring the power of at least one signal received. The power sensor module has an analog-to-digital converter circuit for converting an analog signal into a digital signal. Each of the detector modules comprises at least one antenna via which at least one signal transmitted by the fast switching active antenna array is received. The at least two detector modules are positioned in at least two predefined main radiation directions of the fast switching active antenna array. Each of the detector modules has a rise time, the rise time being lower than the beam switching time of the fast switching active antenna array.

Abstract: A measuring device comprising a microwave transmitter, a microwave receiver, at least one antenna, and a control device. The control device controls the microwave transmitter and the microwave receiver.

Abstract: A test device for testing an electronic device under test comprises a remote measurement module configured to capture signals originating from the electronic device under test and output the captured signals, and an analysis device configured to receive the captured signals and to calibrate the test device based on test signals provided by the analysis device and the captured signals.