Abstract: A method and system for measuring a device under test are disclosed. In some embodiments, a method of implementing a measurement system is provided. The method includes providing a plurality of nodes, each node including a combination of a communication tester configured to generate a communication signal and a channel emulator configured to emulate a channel, and providing a user interface configured to enable a user to control at least one of the plurality of nodes.

Abstract: A method and system for measuring a device under test are disclosed. In some embodiments, a method of implementing a measurement system is provided. The method includes providing a plurality of nodes, each node including a combination of a communication tester configured to generate a communication signal and a channel emulator configured to emulate a channel, and providing a user interface configured to enable a user to control at least one of the plurality of nodes.

Abstract: A method and system for measuring a device under test are disclosed. In some embodiments, a method of implementing a measurement system is provided. The method includes providing a plurality of nodes, each node including a combination of a communication tester configured to generate a communication signal and a channel emulator configured to emulate a channel, and providing a user interface configured to enable a user to control at least one of the plurality of nodes.

Abstract: A method and system for measuring a device under test are disclosed. In some embodiments, a method of implementing a measurement system is provided. The method includes providing a plurality of nodes, each node including a combination of a communication tester configured to generate a communication signal and a channel emulator configured to emulate a channel, and providing a user interface configured to enable a user to control at least one of the plurality of nodes.

Abstract: A method and system for measuring a device under test are disclosed. In some embodiments, a method of implementing a measurement system is provided. The method includes providing a plurality of nodes, each node including a combination of a communication tester configured to generate a communication signal and a channel emulator configured to emulate a channel, and providing a user interface configured to enable a user to control at least one of the plurality of nodes.

Abstract: In some embodiments, an electromagnetic measurement system to test a device under test, DUT, in a chamber is provided. Within the chamber, for each of at least one emulated channel, a first emulator core is configured to introduce an impairment in each of at least one transmit signal to produce an impaired signal, and a transmitter is configured to convert the impaired signal to a radio frequency, RF, signal to be transmitted by an antenna.

Abstract: Methods, tests systems and computers for controlling power delivered to a test volume are provided. According to one aspect, an electromagnetic test system has at least one operational path having a channel emulator output, an amplifier, an attenuator and an antenna. A method includes, for a given desired output power level, C, setting a channel emulator output power to a power level B, and setting the attenuator to a setting A, such that C is a function of B and A. In such embodiments, the attenuation A is calculated based on an upper limit output power of the channel emulator and the desired output power C.

Abstract: In some embodiments, a positioning system is configured to position a plurality of antennas about a device under test (DUT). According to one embodiment, a positioning system includes a first positioner configured to hold a DUT and to provide motion of the DUT about a first axis, and a second positioner configured to hold a first antenna and to provide motion of the first antenna about a second axis.

Abstract: Methods, tests systems and computers for controlling power delivered to a test volume are provided. According to one aspect, an electromagnetic test system has at least one operational path having a channel emulator output, an amplifier, an attenuator and an antenna. A method includes, for a given desired output power level, C, setting a channel emulator output power to a power level B, and setting the attenuator to a setting A, such that C is a function of B and A. In such embodiments, the attenuation A may be calculated based on an upper limit output power of the channel emulator and the desired output power C.

Abstract: In some embodiments, a positioning system is configured to position a plurality of antennas about a device under test (DUT). According to one embodiment, a positioning system includes a first positioner configured to hold a DUT and to provide motion of the DUT about a first axis, and a second positioner configured to hold a first antenna and to provide motion of the first antenna about a second axis.

Abstract: Some embodiments include a system for simulating electromagnetic environments that includes a channel emulator having a plurality of outputs, each output associated with a different operational path. Each operational path has a power amplifier, an antenna and a first coupling mechanism. The power amplifier is coupled to an output of the channel emulator. The antenna is in communication with a test region of the apparatus. The first coupling mechanism simultaneously couples power to the antenna and to a first measurement path when the operational path is coupled to the test region, so that a calibration state of the operational path can be determined and adjusted without interruption of a signal coupled to the antenna in the operational path.

Abstract: Methods, tests systems and computers for controlling power delivered to a test volume are provided. According to one aspect, an electromagnetic test system has at least one operational path having a channel emulator output, an amplifier, an attenuator and an antenna. A method includes, for a given desired output power level, C, setting a channel emulator output power to a power level B, and setting the attenuator to a setting A, such that C is a function of B and A. In such embodiments, the attenuation A may be calculated based on an upper limit output power of the channel emulator and the desired output power C.

Abstract: In some embodiments, a positioning system is configured to position a plurality of antennas about a device under test (DUT). According to one embodiment, a positioning system includes a first positioner configured to hold a DUT and to provide motion of the DUT about a first axis, and a second positioner configured to hold a first antenna and to provide motion of the first antenna about a second axis.

Abstract: A method and system for measuring a device under test are disclosed. In some embodiments, an electromagnetic measurement system to test a device under test, DUT is provided. The system includes, at a central location, an emulator core configured to introduce an impairment in each of at least one transmit signal to produce a digital impaired signal; and at a remote location, a transmitter configured to convert the digital impaired signal to an analog RF signal.

Abstract: A method and system for selectively varying the performance of a test chamber are disclosed. According to one aspect, the performance is affected by a variable absorbing structure of the test chamber. The absorbing structure enables selective exposure of absorbing material to achieve a specific performance.

Abstract: Methods, tests systems and computers for controlling power delivered to a test volume are provided. According to one aspect, an electromagnetic test system has at least one operational path having a channel emulator output, an amplifier, an attenuator and an antenna. A method includes, for a given desired output power level, C, setting a channel emulator output power to a power level B, and setting the attenuator to a setting A, such that C is a function of B and A. In such embodiments, the attenuation A is calculated based on an upper limit output power of the channel emulator and the desired output power C.

Abstract: A method and system for measuring a device under test are disclosed. In some embodiments, a method of implementing a measurement system is provided. The method includes providing a plurality of nodes, each node including a combination of a communication tester configured to generate a communication signal and a channel emulator configured to emulate a channel, and providing a user interface configured to enable a user to control at least one of the plurality of nodes.

Abstract: In some embodiments, a positioning system is configured to position a plurality of antennas about a device under test (DUT). According to one embodiment, a positioning system includes a first positioner configured to hold a DUT and to provide motion of the DUT about a first axis, and a second positioner configured to hold a first antenna and to provide motion of the first antenna about a second axis.

Abstract: Some embodiments include a system for simulating electromagnetic environments that includes a channel emulator having a plurality of outputs, each output associated with a different operational path. Each operational path has a power amplifier, an antenna and a first coupling mechanism. The power amplifier is coupled to an output of the channel emulator. The antenna is in communication with a test region of the apparatus. The first coupling mechanism simultaneously couples power to the antenna and to a first measurement path when the operational path is coupled to the test region, so that a calibration state of the operational path can be determined and adjusted without interruption of a signal coupled to the antenna in the operational path.

Abstract: A method and system for measuring a device under test are disclosed. Some embodiments include a distributed channel emulation system implementing a downlink channel, including at a central location, an emulator core configured to introduce an impairment in each of at least one transmit signal to produce at least one impaired signal for each of at least one emulated channel. The system includes, at a remote location, for each of at the least one emulated channel, an up-converter configured to up-convert an impaired signal of the emulated channel to produce a radio frequency, RF, signal.