Abstract: A calibration method for calibrating a device under test with regard to at least one of phase and amplitude characteristics is described, with providing a device under test. Providing a measurement unit that has at least one measurement antenna unit configured to measure the radiated power of the device under test in the far-field region of the device under test. Turning on at least two antenna elements at the same time with at least one of a steering phase and a steering amplitude such that a peak beam, a null or a side lobe of the radiation pattern generated is directed towards the measurement antenna unit. Adjusting the phase or amplitude of at least one antenna element while the at least one other antenna element remaining stable. Recording the adjusted phase value or the adjusted amplitude value. Saving the setup corresponding to the highest measured gain or the lowest measured gain.

Abstract: An antenna system is described, comprising at least one antenna element provided on a printed circuit board material and a lens unit with a lens body made of a dielectric material, the lens unit being directly connected to the antenna element. The lens unit comprises a lower side facing the antenna element and an upper side being located opposite to the lower side. Further, the upper side has at least one of a convex surface and a Fresnel lens shaped surface. The lens unit also comprises at least one recess filled by the antenna element in a mounted state of the antenna system.

Abstract: A measuring device comprising a plurality of analog signal adjusters, and an antenna array, comprising a plurality of antennas is provided. Each of the plurality of antennas is connected to exactly one of the plurality of analog signal adjusters. The analog signal adjusters are adapted to alter the phase and/or amplitude of signals sent and/or received by the plurality of antennas, generating an antenna characteristic of the antenna array comprising at least a first beamforming beam or a first plane wave and a second beamforming beam or a second plane wave.

Abstract: A calibration method for calibrating a device under test with regard to at least one of phase and amplitude characteristics is described, with providing a device under test. Providing a measurement unit that has at least one measurement antenna unit configured to measure the radiated power of the device under test in the far-field region of the device under test. Turning on at least two antenna elements at the same time with at least one of a steering phase and a steering amplitude such that a peak beam, a null or a side lobe of the radiation pattern generated is directed towards the measurement antenna unit. Adjusting the phase or amplitude of at least one antenna element while the at least one other antenna element remaining stable. Recording the adjusted phase value or the adjusted amplitude value. Saving the setup corresponding to the highest measured gain or the lowest measured gain.

Abstract: An over the air measurement module comprises an antenna, adapted to receive a first measuring signal from a device under test or to transmit a second measuring signal to the device under test. It also comprises an analog signal processor, directly connected to said antenna, adapted to reduce a frequency of the received first measuring signal, resulting in a frequency reduced first measuring signal, or adapted to increase a frequency of a frequency reduced second measuring signal, resulting in the second measuring signal. It also has a connector connected to said analog signal processor and is adapted to output the first frequency reduced measuring signal or is adapted to receive the second frequency reduced measuring signal.

Abstract: An antenna measurement system is described, comprising a device under test and a measurement antenna array. Said measurement antenna array comprises a plurality of antenna elements. Said measurement antenna array is positioned in the near field of said device under test. Said measurement antenna array is positioned such that the main orientation of said measurement antenna array is inclined with respect to the boresight of said device under test and said measurement antenna array. Further, a method for controlling a measurement antenna array is described.

Abstract: An antenna array has plurality of active antennas and passive antennas, wherein the passive antennas being arranged such that the radiation patterns of the active antennas adjacent to the passive antennas match the radiation pattern of the active antennas adjacent only to other active antennas. Further, a calibration system and a method for calibrating an antenna array are shown.

Abstract: A system for phase calibration of an antenna array comprises at least two antenna elements. The system furthermore comprises a device under test comprising the antenna array, a plane wave converter, and a phase measuring unit. Whereas the device under test is configured to transmit or receive a test signal with spatially dependent phase, the plane wave converter is configured to convert the test signal with spatially dependent phase into a signal with constant phase. In addition to this, the device under test or the phase measuring unit is configured to derive calibration values for the phase calibration of the antenna array from the signal with constant phase.

Abstract: A calibration system for calibrating a radio frequency, RF, device comprising a plurality of signal paths, each signal path comprising at least an amplifier and an antenna element, comprises a measurement system for driving the signal paths with a predetermined test signal and measuring an output of the signal paths in response to the test signal, a determination module for determining a first signal path, of which the antenna element provides the lowest output of all antenna elements, and a correction factor calculator for calculating based on output of the first signal path a correction factor for the further signal paths such that with the applied correction factor the output of all signal paths is equal within a predetermined acceptance interval.

Abstract: A calibration system for calibrating a radio frequency, RF, device comprising a plurality of signal paths, each signal path comprising at least an amplifier and an antenna element, comprises a signal generator for driving the signal paths with a predetermined test signal, at least two probes for measuring the output of the signal paths in reaction to the test signal, and a correction factor calculator for calculating respective correction factors based on differences in at least one characteristic of the measured outputs of the signal paths.

Abstract: A measuring system for measuring a high frequency signal is provided. The measuring system comprises an antenna module, adapted for receiving the high frequency signal. Moreover, the system comprises a detector module adapted for deriving a measuring signal from the high frequency signal. Finally, the system comprises a sensor module adapted for measuring the measuring signal. The sensor module is arranged in a housing, while the detector module is not arranged in the housing. The detector module is connected to the sensor module by a first cable, which is adapted to transmit the measuring signal from the detector module to the sensor module.

Abstract: A test system is used for testing multiple input multiple output capabilities. The system comprises a device under test, a movable antenna and a signal simulation unit. Furthermore, the signal simulation unit simulates at least two multiple input multiple output channels in order to test the multiple input multiple output capabilities of the device under test.

Abstract: A calibration system for calibrating an antenna array comprising antenna elements comprises a measuring unit, and a calibration antenna connected to the measuring unit. The measuring unit sequentially excites each antenna element of the antenna array with an input signal and receives the corresponding output signal through the calibration antenna. Furthermore, the measuring unit measures a transfer function of each antenna element of the antenna array.

Abstract: A measuring system for measuring properties of a device under test over the air comprises an antenna array, adapted to receive first measuring signals from the device under test, a measuring device adapted to process the first measuring signals received by the antenna array, and to generate second measuring signals and transmit them to the device under test, using the antenna array. The measuring device comprises a quiet zone generator, which is adapted to perform a beamforming of the first measuring signals after reception by the antenna array. It is preferably also adapted to perform a beamforming on the second measuring signals before transmission by the antenna array. The quiet zone generator is adapted to apply the beamforming, so that at least one adjustable quiet zone is achieved.

Abstract: A system for testing and/or calibrating an antenna array. The system comprises a device under test comprising the antenna array and at least one active radio frequency device for transmitting a test signal being known and always the same on each of at least two signal paths, and a measurement device comprising at least one probe for receiving the test signal on each of the at least two signal paths. The test signal is a non-repeatable one.

Abstract: A test device for a wireless communication device comprises a device support that accommodates the wireless communication device, a movable position determination device, a number of wireless probes for communicating with the wireless communication device, and a mechanical probe support, wherein the wireless probes are mechanically coupled to the probe support and the probe support is mechanically coupled to the position determination device.

Abstract: A measuring device for over the air power measurements is provided. It comprises a power sensor unit, which is configured for measuring a power of a signal emitted by a device under test over the air and an indication unit which is configured for indicating the measured power optically. Moreover, the measuring device comprises a common housing, which encompasses the power sensor unit and the indication unit.

Abstract: A measuring device for over the air power measurements is provided. It comprises a power sensor unit, which is configured for measuring a power of a signal emitted by a device under test over the air and an indication unit which is configured for indicating the measured power optically. Moreover, the measuring device comprises a common housing, which encompasses the power sensor unit and the indication unit.

Abstract: An antenna unit for receiving and/or emitting electromagnetic waves having a certain wavelength is described. Said antenna unit is a slotline antenna unit having a slot region. Said antenna unit comprises at least one antenna element and a carrier. Said carrier is made by a dielectric material wherein said carrier has at least one cutout in said slot region. Said antenna element is made by a printed circuit board. Said antenna element and said carrier are attached to each other wherein said carrier has a thickness being less than one fifth of said wavelength. Further, a radio frequency circuit and a method for manufacturing an antenna unit are described.

Abstract: An antenna element for receiving and/or emitting electromagnetic waves is described. Said antenna element comprises a conductive portion made of a conductive material and a resistive portion made of a resistive material. Said conductive and resistive portions are directly adjacent to each other along at least 50% of at least one outer edge of the conductive portion wherein said antenna element is a tapered slotline antenna element. Further, an antenna system is described.