Abstract: A method, system and apparatus for compensating for non-ideal isotropic behavior of a field probe are disclosed. A method includes, during a calibration procedure, for each of a plurality of positions of the field probe relative to a source, each position denoted by a set of angles (?, ?), performing the following steps: measuring a field by the sensors of the probe, storing the measurements and the set of angles (?, ?) for each measurement, computing a correction factor for the set of angles (?, ?) based on the measurement, and storing the correction factors. During a measurement procedure, each sensor measures a component of the field. A set of angles is determined based on the sensor measurements, and a correction factor is determined based on the set of angles. The correction factor may then be multiplied by the sensor measurements to obtain the corrected field measurements.

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, system and apparatus for implementation and use of voice activated laboratory environments (VALET) are disclosed. According to one aspect, a VALET controls a first instrument in a first location, and has, in acoustic proximity to the first location, an audio interface configured to receive voice commands, to enunciate responses to the voice commands, and to transmit a first signal responsive to a first voice command to an intermediary location. The VALET also includes a computer configured to receive a computer instruction from the intermediary location, the computer instruction configuring the computer to select and issue an instrument command to cause the first instrument to effectuate the voice command.

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 processing finite frequency domain data to which a time gating process is to be applied to improve performance of signal processing equipment and to facilitate complex time gating while suppressing edge effects. According to one aspect, a method for improved processing of a finite frequency signal by signal processing equipment to suppress edge effects arising from a time gating process is provided. The method includes padding the finite frequency signal outside a frequency range with samples derived from an extrapolation process to produce an extended signal having samples inside and outside the frequency range of the finite signal. The method further includes applying a time gating process to the extended signal to exclude signals occurring outside a time interval and to produce a time gated signal with suppressed edge effects.

Abstract: According to some embodiments, a system is provided for simulating a cluster of reflections. The system includes an array of antenna elements distributed in space over a solid angle having an angular spread. The solid angle is substantially less than a full sphere and each antenna element has a spatial orientation. The system also includes a variable path simulator connected to the antenna elements and configured to apply one of excitations to the antenna elements and weights to signals from the antenna elements. The variable path simulator enables simulation of a near field arising from a cluster of reflections of a multipath environment.

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: 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: 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 measurement of a device under test (DUT) are provided. According to one aspect, a system includes a first positioner having a first antenna and a second positioner having a second antenna. The system also includes circuitry configured to cause the first antenna to radiate a test signal to the DUT and to implement one of a probing mode and an interference mode. The probing mode causes, for each of at least one position of the first antenna, the second antenna to receive a signal from the DUT at each of the second set of positions of the second antenna. The interfering mode causes, for each of at least one position of the first antenna, the second antenna to transmit an interfering signal to the DUT at each of the second set of positions of the second antenna.

Abstract: A method and system for measurement of a device under test (DUT) are provided. According to one aspect, a system includes a first positioner having a first antenna and a second positioner having a second antenna. The system also includes circuitry configured to cause the first antenna to radiate a test signal to the DUT and to implement one of a probing mode and an interference mode. The probing mode causes, for each of at least one position of the first antenna, the second antenna to receive a signal from the DUT at each of the second set of positions of the second antenna. The interfering mode causes, for each of at least one position of the first antenna, the second antenna to transmit an interfering signal to the DUT at each of the second set of positions of the second antenna.

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.

Abstract: The invention provides a system for providing passage of fluid lines through an RF shield, the device comprising an RF shield having external and internal surfaces; a channel defined by the RF shield and extending from the external surface to the internal surface of the RF shield; a hollow cylinder rotatably communicating with said channel and extending substantially the length of the channel; a longitudinally extending region of said cylinder defining a gap adapted to receive a fluid conduit; mounting plates attached to the external surface and the internal surfaces of the RF shield; a movable member having a handle, the movable member attached to either end of the channel, the handle in slidable communication with the mounting plate so as to slide about the periphery of the plate; and a depending end of the handle rigidly attached to the cylinder which in turn is in rotatable communication with the circular plate such that the handle can be manipulated to a first position to allow loading of the conduit int

Abstract: A radio frequency shield which reversibly transects an electromagnetic frequency enclosure is provided. The shield includes first a number of panels attached to a first surface of the enclosure. The panels are adapted to move through a first arc relative to the first surface. Shield also includes a first panel from the number of panels having a first leading edge capable of transecting the first arc. The shield further includes a second number of panels attached to a second surface of the enclosure. The second set of panels is adapted to move through an arc relative to the second surface of the enclosure. Also a second panel from said second set of panels has a second leading edge capable of transecting the second arc so as to oppose the first leading edge. Finally, the shield includes a means for reversibly attaching the first leading edge to the second leading edge while simultaneously establishing electrical communication between the first and second plurality of panels.