A system is provided for characterizing a device under test (DUT) including an integrated antenna array. The system includes an optical subsystem having first and second focal planes, where the integrated antenna array is positioned in a beam overlap region extending from the first focal plane of the optical subsystem. The system further includes a measurement array having multiple array elements positioned substantially on the second focal plane of the optical subsystem, the measurement array being configured to receive signals from the DUT, and/or to transmit substantially collimated beams to the DUT, via the optical subsystem. Far-field characteristics of the DUT are measured, as well as angular dependence of each of the far-field characteristics.

Embodiments of the present invention provide systems and methods for performing tests on a device under test (DUT) based on training data derived from a set of training DUTs using nearfield measurement data. Nearfield measurement data can be mapped to performance metrics that approximate performance metrics derived from the far-field measurement data. Nearfield measurements can then be performed on a DUT to generate second nearfield measurement data, and performance metrics of the DUT are generated using the second nearfield measurement data and the mapped performance metrics derived from the training DUTs.

Testing equipment is used in an antenna testing process, and includes a testing head having a perforation, and a testing device having a cylinder. The cylinder is disposed in the perforation to act as a cavity for the antenna testing process. Therefore, only the cylinder needs to be replaced when the antenna testing process is performed on different devices under test, with the whole testing head intact.

The temperature test apparatus includes a test antenna for measuring transmission and reception characteristics of a DUT, an anechoic box formed by a metal housing having an internal space, a heat insulating housing, a temperature control device that controls the temperature of a spatial region, and a measurement device that measures the transmission and reception characteristics of the DUT. The temperature control device and the heat insulating housing are connected to each other by a pipe 31 through which a gas for controlling the temperature of the spatial region passes and that goes through the metal housing. A portion 31A of the pipe from the metal housing to a predetermined position of the internal space is made of metal. A metal net portion 33 that blocks a pipeline 31Ae of a portion of the pipe 31 is provided.

A single radio equipment test device includes a control unit for testing a plurality of antennas, (e.g., an antenna array). The control unit includes a first interface to operatively couple the control unit to an antenna under test, (e.g., arranged in a test chamber). The control unit further includes a second interface to operatively couple the control unit to a reference antenna, (e.g., also arranged in the test chamber). The control unit is configured to control and/or monitor the antenna under test and the reference antenna.

An electromagnetic wave measurement point calculation program causing a computer to execute: a correction coefficient calculating function of calculating a correction coefficient for which an interval of heights of an antenna satisfies a sampling theorem based on a relative positional relation between a test body including a radiation source radiating a radiation interference wave and the antenna performing measurement of at least one of an electric field and a magnetic field of the radiation interference wave and a reflection coefficient of the radiation interference wave on a floor face on which the test body is placed; and a measurement height calculating function of sequentially calculating the heights of the antenna in a case in which the measurement is performed using the correction coefficient.

The present disclosure provides an over-the-air measurement system for testing a device under test. The over-the-air measurement system includes a single measurement antenna and a rotary antenna positioner for the measurement antenna. The over-the-air measurement system further comprises a hardware trigger that is capable of triggering a measurement. The hardware trigger is associated with the rotary antenna positioner. The over-the-air measurement system comprises at least one rotary joint attached to the antenna positioner.

The present disclosure provides an over-the-air measurement system for testing a device under test. The over-the-air measurement system includes a single measurement antenna and a rotary antenna positioner for the measurement antenna. The over-the-air measurement system further comprises a hardware trigger that is capable of triggering a measurement. The hardware trigger is associated with the rotary antenna positioner. The over-the-air measurement system comprises at least one rotary joint attached to the antenna positioner.

The invention discloses a hybrid compact, near-field-to-far-field and direct-far-field test system in an anechoic chamber. It comprises a curved reflector with its primary feed antenna set situated on a lateral side and pointing towards it, a secondary feed antenna set pierced to the reflector or in front of it, and one or several sets of antennas or devices under test (AUT/DUT), and their 3D turntable tower placed at a quiet zone, for which roll, elevation and azimuth can change. In a receive process, the primary antenna set transmits several signals towards the reflector, which reflects these signals towards the quiet zone in the form of planar wavefronts. The secondary antenna set also transmits several signals, but directly towards the quiet zone in spherical wavefronts. The AUT/DUT receives all these signals simultaneously. Through reciprocity, a similar measurement process for transmission can be performed.

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.