Rohde and Schwarz Gmbh & Co. Kg

Ramez Khoury

Vincent Abadie

Corbett Rowell

Heinz Mellein

Niels Petrovic

Thorsten Hertel

Bledar Karajani

Johannes Koebele

Juan-Angel Anton

Jose Fortes

The present disclosure relates to a measurement system for testing a device under test over-the-air. The measurement system comprises a signal generation and/or analysis equipment, several antennas, several reflectors and a test location for the device under test. The antennas are connected with the signal generation and/or analysis equipment in a signal-transmitting manner Each of the antennas is configured to transmit and/or receive an electromagnetic signal so that a beam path is provided between the respective antenna and the test location. The electromagnetic signal is reflected by one of the reflectors so that the electromagnetic signal corresponds to a planar wave, thereby providing indirect far field conditions for testing. A first reflector of the several reflectors is orientated at a first azimuth angle and at a first elevation angle with respect to a center of the test location. A second reflector of the several reflectors is orientated at a second azimuth angle and at a second elevation angle with respect to the center of the test location. The second elevation angle is different to the first elevation angle. The second azimuth angle is different to the first azimuth angle. Further, a method of performing an over-the-air test of a device under test is described.

Measurement system and method of performing an over-the-air test

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

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Munich, Germany

Ramez Khoury