Abstract:
Mode-stirred reverberation chambers have proven themselves useful for over-the-air (OTA) testing of mobile devices, with their main drawback being that they offer limited control over the spatial profile of the fields incident on the device under test. This limitation can be largely overcome if the mechanical stirring is replaced with electronic stirring by placing a reconfigurable surface on one or more of the chamber walls, allowing more precise control of the chamber mode weighting to achieve specified field spatial characteristics. This paper combines electromagnetic chamber models with optimization tools that enable design of the physical chamber and determination of the operational parameters of the reconfigurable surfaces that achieve the desired field characteristics. It also proposes a machine learning model that shows promise for synthesizing fields in the chamber considering the impact of the device under test on the field perturbations. Results from these tools demonstrate the potential of this technology for modern OTA testing.
Biography:
Michael Jensen received his B.S. (1990) and M.S. (1991) in Electrical Engineering from Brigham Young University and his Ph.D. (1994) in Electrical Engineering from the University of California, Los Angeles. Since his graduation, he has been on the faculty of the Electrical and Computer Engineering Department at Brigham Young University, where he is currently a University Distinguished Professor and Dean of the Ira A. Fulton College of Engineering. He has published nearly 300 scientific articles on his research and has been recognized for his research through multiple awards from his professional community and the university, including being elevated to Fellow of the IEEE for his work on wireless communications. He is Past-President of the IEEE Antennas and Propagation Society and was previously the Editor-in-Chief and Associate Editor of the IEEE Transactions on Antennas and Propagation. Dr. Jensen co-founded AJ Design Group in 1998 whose software tools were acquired by Agilent Technologies. In 2000, he co-founded Wavetronix, a company that designs and manufactures radar equipment for the traffic industry with sales and support offices around the world.
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