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Description
This book is designed for both the scientific audience, research and development engineers and the university students. The fundamentals of radio frequency antenna beam forming is explained in this book. The principles of beam focusing and beam steering in near field and far field are visualized with 2D and 3D simulations and compared with measurement results. Besides linear and planar antenna arrays, also conformal arrays, i.e. concave and convex antenna arrays, suitable for certain applications, are investigated and presented. Also related applications of radio frequency beam forming like open loop and closed loop large scale antenna arrays or massive MIMO, which is one of the break-through technologies for 5G and future 6G and involves an extremely large number of antenna elements for the multi-user beam forming, as well as thinned antenna arrays with electrically large distances between the antenna elements are discussed.
Introduction.- Basic Antenna Elements.- Antenna Array.- Beam Forming, Beam Steering, and Beam Focusing.- Radiation Characteristics.- Massive MIMO.- Thinned Antenna Array.- Applications.- Conclusions.- Glossary.
Dr. Heinz Schmiedel studied Electrical Engineering at the Technische Hochschule Mittelhessen - University of Applied Sciences and received his Bachelor's Degree in 1975. He earned his Master's Degree and Dr.-Ing. Degree in Electrical Engineering from University Bremen in 1979 and 1983 respectively. Research interests were in the field of simulating microwave components. After he joined Deutsche Bundespost (now Deutsche Telekom) he did research on satellite links with the Research Institute of Deutsche Bundespost, Darmstadt, Germany. From 1990 - 2020 he was a Professor with the University of Applied Sciences FH Dieburg, Germany, with teaching and research emphasis on microwave components and systems. Since 2000 he is with the University of Applied Sciences Hochschule Darmstadt, Germany. His continued teaching and research interests are in the field of microwave components and systems, measurement technology, satellite communications, and numerical optimization procedures. He had the opportunity to do research and teaching during sabbaticals for a semester each, as a visiting professor to Intelsat Company, D.C., USA, 1995; University of Wisconsin, Platteville, WI, USA, 2003; Purdue University, Lafayette, IN, USA, 2009; and James Cook University, Townsville, QL, Australia, 2016. He has published more than 40 scientific and conference papers.



