Abstract: A measurement system is described, comprising a sampling clock unit, a travelling wave sampler circuit and at least a first analog-to-digital converter and a second analog-to-digital converter. The sampling clock unit is configured to generate a sampling timing for the travelling wave sampler circuit. The travelling wave sampler circuit is configured to receive an input signal. The travelling wave sampler circuit is further configured to provide at least a first time-discrete intermediate signal and a second time-discrete intermediate signal and to sample the first and the second time-discrete intermediate signal with the same sampling timing. The first analog-to-digital converter and the second analog-to-digital converter are configured to receive the first time-discrete intermediate signal sampled and the second time-discrete intermediate signal sampled, respectively.

Abstract: A transmitter module for a broadband data transmission system for radio communications, comprising at least one polyphase FFT filter bank is described. The at least one polyphase FFT filter bank is established as a synthesis polyphase FFT filter bank, wherein the at least one polyphase FFT filter bank comprises several filter units, wherein the transmitter module is configured to generate a transmission signal by an orthogonal frequency division multiplexing technique, for example by a shaped orthogonal frequency division multiplexing. Moreover, a receiver module for a broadband data transmission system and a data transmission system are described.

Abstract: A signal analysis method for recovering a clock signal from an input signal is described. The input signal comprises a symbol sequence, wherein each symbol has one of N different amplitude values, and wherein N is an integer bigger than 1. The signal analysis method comprises the following steps: The input signal is received. Transition times of the input signal are determined, wherein the input signal respectively crosses one of several predetermined amplitude thresholds at the transition times. The transition times are transformed into one reference symbol period, thereby obtaining transformed transition times. The clock signal is determined based on the transformed transition times. Further, a signal analysis module for recovering a clock signal from an input signal is described.

Abstract: A transmitter module for a broadband data transmission system for radio communications, comprising at least one transmitter filter bank and a shaping module is described. The at least one transmitter filter bank is established as a synthesis polyphase FFT filter bank, wherein the transmitter module is configured to generate a transmission signal, wherein the transmitter module is configured to forward the transmission signal to the shaping module, wherein the shaping module is connected to the at least one transmitter filter bank downstream of the at least one synthesis polyphase FFT filter bank, and wherein the shaping module is configured to reduce a crest factor of the transmission signal. Moreover, a data transmission system and a data transmission method are described.

Abstract: A radio system for radio communication comprises at least two antennas that are spaced from each other by a distance. The distance is set to enable independent transmission or reception of radio signals via the at least two antennas. The system comprises a selection module configured to select at least one of the at least two antennas for radio transmission and/or radio reception.

Abstract: A method for recovering a clock signal from a data signal by using a clock recovery module is described. At least one bit count of the data signal is received. At least one edge timing of the data signal is received. At least one cost function is formed that comprises the at least one bit count of the data signal and the at least one edge timing of the data signal. The at least one cost function is minimized with respect to at least one of a clock edge timing and a bit period. Further, a clock recovery module is described.

Abstract: A method for positioning a device under test within a test area is provided. The method comprises the steps of determining shape and/or quality of a quiet zone with respect to the device under test, and using an augmented reality technique in order to optimize the positioning of the device under test in the quiet zone.

Abstract: An over-the-air measurement system for performing over-the-air measurements on a device under test is described. The measurement system comprises a measurement device having several measurement antennas, several waveguides, wherein at least one waveguide is assigned to each measurement antenna, several waveguide-to-cable adapters, and a positioning unit assigned to the measurement antennas. The number of the waveguide-to-cable adapters is at least identical to the number of the measurement antennas. The positioning unit is configured to move the measurement antennas with respect to the waveguide-to-cable adapters.

Abstract: A measurement system for testing a device under test is described that comprises at least one signal unit for processing a signal, at least two measurement antennas, at least two reflectors, a shielded space, and a testing position for the device under test. Each measurement antenna is orientated with respect to the testing position such that the testing position is located in at least one of a side lobe area and a back lobe area of the measurement antennas. The reflectors are located such that each reflector generates and/or collimates a planar wave at different angles with respect to the testing position. Further, a method for performing test measurements is described.

Abstract: The invention relates to an over-the-air (OTA) test system for measuring a performance of a device under test (DUT). The test system comprises an over-the-air (OTA) measurement chamber provided with at least one feedthrough for at least a first air hose and a second air hose. The test system further includes a thermally isolated hollow body inside the OTA measurement chamber, in which the DUT is positioned having at least two openings for connecting a first end of each of the first and the second air hose, and at least one sensor having a connection wire, located within the thermally isolated hollow body. Advantageously, the sensor connection wire is fed through one of the two openings into the thermally isolated hollow body.

Abstract: A measuring device is provided. The measuring device comprises a user input, a storage, and a processor. In this context, the user input is configured to receive at least one measurement sequence from a user, whereas the storage is configured to store at least one measurement parameter and at least one duration of time required by the measuring device to achieve the at least one measurement parameter. In addition to this, the processor is configured to calculate the total time needed for the at least one measurement sequence on the basis of the at least one duration of time.

Abstract: A radar target simulation system for simulating at least one moving radar target is disclosed. The radar target simulation system includes an analog to digital converter and at least one digital processing channel. The digital processing channel includes a delay circuit or unit, a resampling circuit or unit and a frequency shifting circuit or unit. Moreover, a method for operating a radar target simulation system is disclosed.

Abstract: A modular RF measuring device has a motherboard arranged centrally within the device so as to define a front side and a rear side, the front side and the rear side each comprising module interfaces.

Abstract: A signal analysis method is described. The signal analysis method includes the following steps. A first difference quantity is determined based on a first set of samples by a first polyphase filter, wherein the first set of samples includes at least two input samples. A second difference quantity is determined based on a second set of samples by a second polyphase filter, wherein the second set of samples includes at least two input samples, wherein the input samples associated with the second set of samples are time-shifted with respect to the input samples associated with the first set of samples. The first difference quantity and the second difference quantity are compared based on a predefined criterion. At least one timing parameter of the symbol sequence is determined based on the comparison of the first difference quantity and the second difference quantity. Further, a signal processing module is described.

Abstract: An arbitrary waveform sequencer device for playing a list of at least a first and a second arbitrary waveform file in a sequence is provided. The arbitrary waveform sequencer device comprises a list increment condition control unit configured to control an increment from the first to the second arbitrary waveform file as a function of an increment condition, and a transition control unit configured to control a timing of the increment.

Abstract: A method for controlling transmission rate of a device under test (DUT) is provided. The method comprises the steps of establishing a connection to the DUT, transmitting an operating mode notification in order to adjust the operating bandwidth and/or spatial stream capabilities of the DUT, and receiving an acknowledgement notification from the DUT regarding the correct reception of the transmitted operating mode notification.

Abstract: A transmitter module for a broadband data transmission system for radio communications, comprising at least one transmitter filter bank and a shaping module is described. The at least one transmitter filter bank is established as a synthesis polyphase FFT filter bank, wherein the transmitter module is configured to generate a transmission signal, wherein the transmitter module is configured to forward the transmission signal to the shaping module, wherein the shaping module is connected to the at least one transmitter filter bank downstream of the at least one synthesis polyphase FFT filter bank, and wherein the shaping module is configured to reduce a crest factor of the transmission signal. Moreover, a data transmission system and a data transmission method are described.

Abstract: A transmitter module for a broadband data transmission system for radio communications, comprising at least one polyphase FFT filter bank is described. The at least one polyphase FFT filter bank is established as a synthesis polyphase FFT filter bank, wherein the at least one polyphase FFT filter bank comprises several filter units, wherein the transmitter module is configured to generate a transmission signal by an orthogonal frequency division multiplexing technique, for example by a shaped orthogonal frequency division multiplexing. Moreover, a receiver module for a broadband data transmission system and a data transmission system are described.

Abstract: A transmitter module for a broadband data transmission system for radio communications, comprising at least one polyphase FFT filter bank and a hopping processor is described. The at least one polyphase FFT filter bank is established as a synthesis polyphase FFT filter bank, wherein the at least one polyphase FFT filter bank comprises several filter units, wherein the transmitter module is configured to receive an input signal comprising a symbol sequence, wherein the transmitter module is configured to generate and transmit a transmission signal based on the received input signal by a frequency hopping technique, and wherein the hopping processor is configured to adjust a transmission frequency of the transmission signal. Moreover, a receiver module for a broadband data transmission system and a data transmission system are described.

Abstract: An antenna system comprises at least one antenna, a feeding line and a cable guide for a line not feeding the at least one antenna. The at least one antenna has a feeding portion to which the feeding line is assigned. The cable guide has an opening that is provided in the feeding portion.