Abstract: Systems and methods for testing a wireless device having a beamforming circuit are disclosed herein. An exemplary system includes a shielded test enclosure, a wireless channel emulator, and a test instrument. The shielded test enclosure provides a cable-free connection between the wireless device and the wireless channel emulator, thereby allowing for testing of various types of wireless devices, particularly those that do not have radio-frequency (RF) connectors. The shielded test enclosure is smaller in size and less-expensive than traditional multi-probe anechoic chambers. In one example application, the shielded test enclosure is used to house a multiple-input multiple-output (MIMO) antenna array of a wireless device and a probe antenna array. The probe antenna array is coupled to the wireless channel emulator and used to receive signals from MIMO antenna arrays of various sizes thereby eliminating the need to uniquely tailor the probe antenna array to any specific MIMO antenna array.

Abstract: A system provides OTA testing of a DUT having a DUT antenna array for forming physical beams. The system includes dual-polarized probes or probe groups, an anechoic chamber, a wireless channel emulator, and a test instrument. The dual-polarized probes or probe groups receive the physical beams formed by the DUT antenna array. The anechoic chamber houses the DUT antenna array and the probes or probe groups. The wireless channel emulator is coupled to the probes or probe groups for receiving the physical beams, and generates a calibrated OTA channel model having simulated beams corresponding to the physical beams. The calibrated OTA channel model simultaneously provides isolated wireless cable connections corresponding to the simulated beams, and emulates fading channel conditions. The test instrument, coupled to the wireless channel emulator, establishes a communications link with the DUT and evaluates performance characteristics of the DUT based on the calibrated OTA channel model.

Abstract: Systems and methods for testing a wireless device under test (DUT) using over the air (OTA) channel emulation are disclosed herein. According to an aspect, a system is disclosed for testing a wireless DUT having a DUT antenna array. The system includes a probe antenna array, a shielded test chamber, a radio channel emulator, and a wireless communication emulator. The probe antenna array is electrically coupled with the radio channel emulator, and the shielded test chamber is configured to position the DUT antenna array in a radiative near field region of the plurality of probe antennas. The wireless communication emulator is operatively coupled with the radio channel emulator and is configured to emulate an electrical coupling between at least one antenna port of the DUT and at least one radio channel model of the radio channel emulator.

Abstract: Systems and methods for testing a wireless device having a beamforming circuit are disclosed herein. An exemplary system includes a shielded test enclosure, a wireless channel emulator, and a test instrument. The shielded test enclosure provides a cable-free connection between the wireless device and the wireless channel emulator, thereby allowing for testing of various types of wireless devices, particularly those that do not have radio-frequency (RF) connectors. The shielded test enclosure is smaller in size and less-expensive than traditional multi-probe anechoic chambers. In one example application, the shielded test enclosure is used to house a multiple-input multiple-output (MIMO) antenna array of a wireless device and a probe antenna array. The probe antenna array is coupled to the wireless channel emulator and used to receive signals from MIMO antenna arrays of various sizes thereby eliminating the need to uniquely tailor the probe antenna array to any specific MIMO antenna array.

Abstract: Systems and methods for testing a wireless device having a beamforming circuit are disclosed herein. An exemplary system includes a shielded test enclosure, a wireless channel emulator, and a test instrument. The shielded test enclosure provides a cable-free connection between the wireless device and the wireless channel emulator, thereby allowing for testing of various types of wireless devices, particularly those that do not have radio-frequency (RF) connectors. The shielded test enclosure is smaller in size and less-expensive than traditional multi-probe anechoic chambers. In one example application, the shielded test enclosure is used to house a multiple-input multiple-output (MIMO) antenna array of a wireless device and a probe antenna array. The probe antenna array is coupled to the wireless channel emulator and used to receive signals from MIMO antenna arrays of various sizes thereby eliminating the need to uniquely tailor the probe antenna array to any specific MIMO antenna array.

Abstract: Systems and methods for testing a wireless device having a beamforming circuit are disclosed herein. An exemplary system includes a shielded test enclosure, a wireless channel emulator, and a test instrument. The shielded test enclosure provides a cable-free connection between the wireless device and the wireless channel emulator, thereby allowing for testing of various types of wireless devices, particularly those that do not have radio-frequency (RF) connectors. The shielded test enclosure is smaller in size and less-expensive than traditional multi-probe anechoic chambers. In one example application, the shielded test enclosure is used to house a multiple-input multiple-output (MIMO) antenna array of a wireless device and a probe antenna array. The probe antenna array is coupled to the wireless channel emulator and used to receive signals from MIMO antenna arrays of various sizes thereby eliminating the need to uniquely tailor the probe antenna array to any specific MIMO antenna array.

Abstract: An MPAC OTA test system and method are provided that can be used to perform radiated testing of 5G BSs and 5G UEs. The arrangement and number of active probe antennas in the anechoic chamber can be selected based at least in part on a simulation of the channel model of the RC emulator to improve testing while also reducing the overall number of probe antennas that are needed and reducing the channel resources of the RC emulator of the MPAC OTA test system, thereby allowing the overall complexity and cost of the MPAC OTA test system to be reduced.

Abstract: A test system is provided that for testing base stations (BSs) and user equipment (UE) that includes a radio channel (RC) emulator having a dynamically-variable channel model that is configured to be dynamically varied in accordance with beam indices received in the RC emulator from the BS and/or the UE, depending on implementation scenario and on whether the BS or the UE is the DUT. The beam indices are used by the BS or US to obtain antenna element weights that are used by analog beam former circuits of the BS or UE, respectively, to weight their antenna elements to cause time-variant antenna beam patterns to be formed by their antenna arrays, which are modelled by the dynamically-variable channel model to generate time-variant signals. The RC emulator performs emulation operations and outputs faded time-variant signals for use by the BS or UE in evaluating characteristics of the DUT.

Abstract: A multiple-input multiple-output (MIMO) over-the-air (OTA) test system and method are provided that enable a device under test (DUT) to be tested that has no antenna connectors for interfacing antenna elements of the DUT with the MIMO OTA test system. The MIMO OTA test system and method can include a lens system that allows the OTA tests to be performed in a radiating near-field zone, thereby allowing a relatively small and less expensive anechoic chamber to be used in the MIMO OTA test system.

Abstract: A multiple-input multiple-output (MIMO) over-the-air (OTA) test system and method are provided that enable a device under test (DUT) to be tested that has no antenna connectors for interfacing antenna elements of the DUT with the MIMO OTA test system. The MIMO OTA test system and method can include a lens system that allows the OTA tests to be performed in a radiating near-field zone, thereby allowing a relatively small and less expensive anechoic chamber to be used in the MIMO OTA test system.

Abstract: Systems and methods for testing a wireless device under test (DUT) using over the air (OTA) channel emulation are disclosed herein. According to an aspect, a system is disclosed for testing a wireless DUT having a DUT antenna array. The system includes a probe antenna array, a shielded test chamber, a radio channel emulator, and a wireless communication emulator. The probe antenna array is electrically coupled with the radio channel emulator, and the shielded test chamber is configured to position the DUT antenna array in a radiative near field region of the plurality of probe antennas. The wireless communication emulator is operatively coupled with the radio channel emulator and is configured to emulate an electrical coupling between at least one antenna port of the DUT and at least one radio channel model of the radio channel emulator.

Abstract: MIMO test systems and methods are provided that eliminate the need for a wired connection between the test system and the antenna ports of the DUT, thereby eliminating the need to open up the housing of the DUT and risk damaging or destroying it. The MIMO test systems and methods also eliminate the need for an anechoic chamber, thereby eliminating the cost and space requirements associated therewith. A suitable non-anechoic, electromagnetically-shielded chamber can be used in the test system that is much less expensive and that has a much smaller spatial footprint than a typical anechoic chamber used in MIMO test systems.