The Experts below are selected from a list of 18 Experts worldwide ranked by ideXlab platform
Ferry Kienberger - One of the best experts on this subject based on the ideXlab platform.
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S-parameter calibration procedure for multiport microwave imaging systems
arXiv: Signal Processing, 2019Co-Authors: Manuel Kasper, Mykolas Ragulskis, Georg Gramse, Ferry KienbergerAbstract:Multitude of Antennas are typically used in microwave imaging systems. Here we outline a simple and effective calibration method for multiport imaging systems. By using only one additional component, an electronic calibration module (ECal), one port is calibrated and the calibration plane is thereby moved to the Antenna Connector. Assuming all Antennas interact with the test phantom in the same way, the one-port calibration is transferred to all other Antennas. For full calibration including the transmission path between Antennas, the unknown thru technique is used. This calibration procedure is simple and it can be fully automated, and no RF components are perturbed.
Manuel Kasper - One of the best experts on this subject based on the ideXlab platform.
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S-parameter calibration procedure for multiport microwave imaging systems
arXiv: Signal Processing, 2019Co-Authors: Manuel Kasper, Mykolas Ragulskis, Georg Gramse, Ferry KienbergerAbstract:Multitude of Antennas are typically used in microwave imaging systems. Here we outline a simple and effective calibration method for multiport imaging systems. By using only one additional component, an electronic calibration module (ECal), one port is calibrated and the calibration plane is thereby moved to the Antenna Connector. Assuming all Antennas interact with the test phantom in the same way, the one-port calibration is transferred to all other Antennas. For full calibration including the transmission path between Antennas, the unknown thru technique is used. This calibration procedure is simple and it can be fully automated, and no RF components are perturbed.
Mykolas Ragulskis - One of the best experts on this subject based on the ideXlab platform.
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S-parameter calibration procedure for multiport microwave imaging systems
arXiv: Signal Processing, 2019Co-Authors: Manuel Kasper, Mykolas Ragulskis, Georg Gramse, Ferry KienbergerAbstract:Multitude of Antennas are typically used in microwave imaging systems. Here we outline a simple and effective calibration method for multiport imaging systems. By using only one additional component, an electronic calibration module (ECal), one port is calibrated and the calibration plane is thereby moved to the Antenna Connector. Assuming all Antennas interact with the test phantom in the same way, the one-port calibration is transferred to all other Antennas. For full calibration including the transmission path between Antennas, the unknown thru technique is used. This calibration procedure is simple and it can be fully automated, and no RF components are perturbed.
Georg Gramse - One of the best experts on this subject based on the ideXlab platform.
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S-parameter calibration procedure for multiport microwave imaging systems
arXiv: Signal Processing, 2019Co-Authors: Manuel Kasper, Mykolas Ragulskis, Georg Gramse, Ferry KienbergerAbstract:Multitude of Antennas are typically used in microwave imaging systems. Here we outline a simple and effective calibration method for multiport imaging systems. By using only one additional component, an electronic calibration module (ECal), one port is calibrated and the calibration plane is thereby moved to the Antenna Connector. Assuming all Antennas interact with the test phantom in the same way, the one-port calibration is transferred to all other Antennas. For full calibration including the transmission path between Antennas, the unknown thru technique is used. This calibration procedure is simple and it can be fully automated, and no RF components are perturbed.
Ralf R. Muller - One of the best experts on this subject based on the ideXlab platform.
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Using Parasitic Elements for Implementing the Rotating Antenna for MIMO Receivers
IEEE Transactions on Wireless Communications, 2008Co-Authors: R. Bains, Ralf R. MullerAbstract:We consider a new concept of a multiple-input-multiple-output (MIMO) receiver which uses one active receiving Antenna and multiple parasitic elements. The parasitic elements give the possibility of creating a directive Antenna beam which is rotated 360 degrees around within the duration of a symbol period. The received signal which is accessed at the Antenna Connector of the active Antenna is expanded in frequency bandwidth compared to the transmitted signal. We show that each sub-band of the received signal consists of linearly independent combinations of the transmitted signals, and thus we have obtained a MIMO receiver. We give a few examples on how to implement this receiver and also explain the effects of sampling the wave-field at discrete angular directions.