Rohde and Schwarz Gmbh & Co. Kg

Johannes Koebele

Heinz Mellein

Thorsten Hertel

Vincent Abadie

Niels Petrovic

Bledar Karajani

Adrian Cardalda-Garcia

Juan-Angel Anton

Edwin Menzel

Ramez Khoury

Jens Wappler

Jochen Oster

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.

Test equipment for over the air tests as well as method for testing a device under test

A measuring system comprises a model generation unit and a signal generator. The model generation unit is adapted to generate a signal model based upon received global navigation satellite system reception data. The signal generator is adapted to generate a measuring signal based upon the signal model and to supply a device under test with the measuring signal.

Measuring system and measuring method for model based generation of global navigation satellite system signals

A testing method for testing mobile communication devices comprises measuring a three-dimensional antenna pattern of an active phased antenna array (AAS) of the mobile communication device, with the AAS being maintained at a specific beamforming alignment during the measurement. A predefined base fading profile is calibrated with the measured three-dimensional antenna pattern to obtain an optimized fading profile adapted to the specific beamforming alignment. A channel model for emulation of a base station is emulated on the basis of the optimized fading profile. The method further involves performing a receiver test on the mobile communication device using the emulated channel model. The testing method may in some embodiments be a radiated two-stage over-the-air (RTS-OTA) testing method.

Testing methods and systems for mobile communication devices

A test system for over the air (OTA) measurements of a device under test (DUT) with a dynamic adjustable grid is provided. The system comprises a device under test (DUT), at least one positioner, at least one measurement antenna, and at least one measuring/control device. The measurement antenna is configured to measure several defined measurement points with regard to the device under test, wherein the measurement points are arranged in a grid around the device under test. The configuration of the grid depends on an input value received by the measuring/control device.

Test system and method for over the air (OTA) measurements with a dynamic adjustable grid

A test method for testing a device under test with a measurement unit comprises transmitting a number of test commands from the measurement unit to the device under test via a test interface of the device under test, generating in the device under test in response to the test commands respective communication signals, emitting by the device under test the generated communication signals via a wireless communication interface, receiving signals from the device under test in the measurement unit, and evaluating the received signals in the measurement unit.

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Offenburg, Germany

Johannes Koebele