Abstract: A signal synthesizer circuit includes a clock source, a direct digital synthesizer (DDS) circuit, signal paths, and an output. The clock source generates or receives a clock signal having a predefined frequency. The DDS circuit generates a DDS signal. A first signal path is connected to the DDS circuit to receive the DDS signal and includes a multiplier circuit that multiplies a frequency of the DDS signal by a multiplication factor, obtaining a frequency-multiplied DDS signal. A second signal path is connected to the clock source to receive the clock signal and includes a mixer circuit that receives the clock signal and the frequency-multiplied DDS signal. The mixer circuit mixes the clock signal with the frequency-multiplied DDS signal, obtaining a mixed DDS signal. A frequency of the mixed DDS signal corresponds to the sum of frequencies of the clock signal and the frequency-multiplied DDS signal.

Abstract: A method of analyzing test capabilities of a mobile communication test instrument is described. The method includes the steps of: receiving device under test (DUT) parameters being associated with a device under test, wherein the DUT parameters comprise information on a subset of band configurations associated with a device under test, wherein the subset of band configurations is to be tested; receiving, from an instrument database, test instrument parameters being associated with the test instrument, wherein the test instrument parameters comprise information on features of the test instrument; and determining, by an analysis circuit, whether the test instrument is suitable for testing the device under test based on the DUT parameters and based on the test instrument parameters. Further, a computer program product embodied on a non-transitory computer-readable medium and an analysis system for analyzing test capabilities of a mobile communication test instrument are described.

Abstract: A measurement system includes a common port, the common port being connectable to a signal output of the device under test. The measurement system further includes a signal line being connected to the common port, wherein the signal line includes a first directional coupler portion and a second directional coupler portion. The measurement system further includes a signal processing circuit, wherein the signal processing circuit includes an IQ analysis circuit and an IQ synthesizer circuit. The IQ analysis circuit is connected with the common port via the first directional coupler portion so as to receive a forward-travelling signal from the common port. Further, a testing method of testing a device under test is described.

Abstract: The present disclosure provides an electronic tester comprising at least one test fixture that couples to a device under test, at least one test instrument coupled to at least one of the test fixtures that measures signals in the device under test, a test controller that controls the device under test while the test is performed, and an adapter module comprising a general control interface that is coupled to the test controller, and a DUT-specific communication interface that couples to the device under test to communicate with the device under test, wherein the test controller controls the device under test with generic control signals sent to the general control interface, and wherein the adapter module translates the general control signals into DUT-specific control signals and transmit the DUT-specific control signals to the device under test. Further, the present disclosure provides a respective method.

Abstract: An antenna array being attachable to a surface is provided. Said antenna array comprises at least two antennas, and a magnetic material and/or an alloy with ferro-magnetic properties for magnetically attaching at least one further antenna.

Abstract: Disclosed are a process (1) and a device (2) for generating at least one synthetic radio frequency, RF, image for machine learning. The process (1) comprises: having (11) a three-dimensional, 3D, body model of a human; sampling (12) the 3D body model; and generating (13) the at least one synthetic RF image in accordance with an imaging transformation of the 3D body sample. This provides labeled data in the form of RF images for training of machine learning algorithms.

Abstract: The present disclosure generally relates to a method for testing a telecommunication standard-based positioning, navigation, and timing system and a test device. The system includes the test device. Radio signals from at least three different transmitters are received by the test device. Each transmitter transmits a radio signal according to the telecommunication standard. An assessed position of the test device is determined based on the radio signals received by the test device. The position of the mobile device is determined by the test device additionally to the assessed position. The assessed position is compared with the determined position.

Abstract: The present disclosure relates to a switching device including a switch as well as a first port, a second port and a third port. The switch has at least two different switching states. The first port is connected with the third port in a first switching state. The second port is connected with the third port in a second switching state. The switching device is capable of automatically setting the switching state of the switch in dependency of a direct current bias. Further, a setup is described.

Abstract: The present disclosure relates to a method of artificial intelligence (AI) setting within a communication system with a base station and several user equipments (UEs). The user equipments each report an artificial intelligence parameter for universal communications identifier (UCI) capabilities to the base station. The user equipments are grouped by the base station based on the artificial intelligence parameter for the universal communications identifier capabilities. The base station multicasts artificial intelligence configuration to each group of user equipments separately. Further, a communication system is described.

Abstract: A measurement device and method for testing a device under test (DUT). The device includes an input terminal for receiving a RF signal from the DUT; at least one analog-to-digital (A/D) converter configured to generate a digital data including a plurality of sampled signals from the received RF signal; at least one filter configured to filter the digital data generated by the at least one A/D converter based on an intermediate-frequency bandwidth (IFBW) set in the at least one filter; a detector configured to analyse the filtered digital data based on a pre-set number of samples from the filtered digital data; and a controller configured to calculate a signal-to-noise ratio (SNR) value of the analysed filtered digital data, and to adjust at least one of the IFBW of the at least one filter and the number of samples of the detector based on the calculated SNR value.

Abstract: Embodiments of the present disclosure relate to a method of Time Difference of Arrival (TDoA) locating an emitter that emits a signal by a mobile receiver. A first measurement of the signal is performed at a first location, thereby obtaining first measurement results. A second measurement of the signal is performed at a second location, thereby obtaining second measurement results. A third measurement of the signal is performed at a third location, thereby obtaining third measurement results. The first measurement results, the second measurement results and the third measurement results are processed, thereby determining the location of the emitter. At least one of the second location and the third location is determined based on a reception range. Further, a locating system is described.

Abstract: The present disclosure provides a measurement device comprising at least two measurement signal inputs, and at least two multi-channel analog-to-digital converters, each multi-channel analog-to-digital converter comprising two ADC signal inputs and being selectively operable in an interleaved operating mode or a non-interleaved operating mode, wherein each one of the measurement signal inputs of consecutive pairs of signal inputs is coupled to a different one of the multi-channel analog-to-digital converters. The present disclosure further provides a respective method.

Abstract: A measurement setup for measuring attenuation through an irregular surface of a device under test is described. The measurement setup includes a positioning system, a reference reflector, and a three dimensional imaging system. The measurement setup has a reference state and a measurement state, wherein respective images are taken in the different states. The imaging system is configured to compare the images taken in the reference state and the measurement state to determine the attenuation of the device under test. Further, a reference reflector as well as a method for measuring attenuation are described.

Abstract: A test system for testing a device under test is described. The test system includes an anechoic chamber for encompassing a device under test to be tested by means of radio frequency radiation. The anechoic chamber has a wall with an opening provided in the wall. The test system also has a feedthrough assembly for transporting a fluid into the anechoic chamber or from the anechoic chamber. The feedthrough assembly has a pipe that extends through the opening such that the pipe is fed through the opening. The pipe is routed such that radio frequency radiation is prevented from leaving the anechoic chamber via the pipe. Furthermore, a feedthrough assembly is described.

Abstract: A device for emphasizing the relation of user interface sections comprises a first user interface section and a second user interface section. The first user interface section and the second user interface section are configured to display at least one of: an instrument parameter, a measurement result, a waveform. The device is configured to de-focus the second user interface section with respect to the first user interface section based on the selection of an instrument parameter in the first user interface section.

Abstract: A visualization method of visualizing downlink signal power levels and offsets in a wireless communication cell is described. The visualization method includes the following steps: processing a set of downlink communication parameters, wherein the set of downlink communication parameters includes downlink signal parameters of the wireless communication cell, wherein the downlink signal parameters relate to the wireless communication cell as a whole or to portions of the wireless communication cell; and generating visualization data based on the set of downlink communication parameters, wherein the visualization data includes information on a status of the wireless communication cell, and wherein the status relates to the validity of downlink signal power levels and offsets in the wireless communication cell.

Abstract: A method of determining filter coefficients of an equalizer circuit for equalizing a non-linear electronic system is described. The equalizer circuit includes a Volterra filter circuit. Further, an equalizer circuit for equalizing a non-linear electronic system and an electronic device are described.

Abstract: A measurement system includes an input port, a signal splitter, first and second signal paths, an analysis circuit, and a control circuit. The input port is configured to receive an input signal to be measured. The signal splitter is configured to split the input signal into a first signal that is forwarded to the first signal path and a second signal that is forwarded to the second signal path. The analysis circuit is connected to the first signal path and the second signal path so as to receive both a first processed signal and a second processed signal. The analysis circuit is configured to a complex-valued product signal from the processed signals average the complex-valued product signal over a predetermined number of samples, and determine an averaged power signal based thereon. The control circuit is configured to directly or indirectly add an offset to the averaged power signal.

Abstract: A method for GSM silent call prolongation comprises a first step of activating a mobile station by establishing a mobile terminated call, MTC, communication link to the mobile station. The establishing of the MTC communication link is performed without sending an assignment command message to the mobile station. The method comprises a second step of sending a first unrealizable SETUP message to establish the silent call. The method comprises a third step of sending at least one more unrealizable SETUP message to prolong the silent call.

Abstract: A signal processing device is described, with a signal input for receiving an input signal, a first trigger unit generating a trigger signal based upon a first trigger event in the input signal and an acquisition memory for acquiring the input signal at least based upon the trigger signal so as to provide an acquired signal. The signal processing device also comprises a second trigger unit connected to the acquisition memory. The second trigger unit is adapted to process the acquired signal according to a second trigger. The second trigger unit is adapted as a zone trigger unit applying a zone trigger. Further, a method of applying a zone trigger is described.