This book aims to cover a new emerging need in designing digital phase shifter for modern communication systems. With the advancement of new generation mobile communication systems, directed beams of antenna arrays save a substantial amount of power as well as improve the communication quality. In this regard, beam-forming circuits, such as digital phase shifters (DPS) constitute essential parts of the antenna array systems. Therefore, this book is devoted to the design of digital phase shifters for various communications systems. Nowadays, phase array systems demand compact phase shifters suitable for chip implementation with wide phase-range and broad frequency band. Each chapter of this book is organized as stand-alone in such a way that the reader requires no specific background acquired from the other chapters. For each phase shifter topology introduced in this book, the reader is furnished with explicit design equations to construct the circuit under consideration. Furthermore, design equations are programmed using MATLAB to assess the electrical performance of the phase shifters with ideal and lossy components. MATLAB design programs are given at the and of each chapter as appendices and provided as soft copy on the web page of the book. In chapters 12 and 14, MMIC layouts for the lattice and T-section based DPS are provided for the readers. It is hoped that an interested reader can immediately identifies the optimum phase shifter topology for the need under consideration with its estimated electric performance.
1 Fundamentals of Digital Phase Shifters 2 Antennas, Arrays, Beam
Forming, and Beam Steering Levent Sevgi 3 Scattering Parameters for Lossless
Two-Ports 4 Transmission Lines as Phase Shifter 5 Loaded-Line Digital Phase
Shifters 6 Symmetric T-/PI-Sections as Phase Shifters 7 180? Low-pass-Based
T-Section Digital Phase Shifter Topology 8 180? Low-pass-Based PI-Section
Digital Phase Shifter Topology (LPI-DPS) 9 180? High-pass-Based T-Section
Digital Phase Shifter Topology (HPT-DPS) 10 A Symmetric Lattice-Based
Wideband Wide Phase Range Digital Phase Shifter Topology 11 360? T-Section
Digital Phase Shifter 12 360? PI-Section Digital Phase Shifter 13 180?
High-pass-Based PI-Section Digital Phase Shifter 14 A Wide Phase Range
Compact T-Section Digital Phase Shifter Topology
Binboga Siddik Yarman (Life Fellow, IEEE) received his BSc degree from the Technical University of Istanbul, in 1974, his MSc degree from Stevens Institute of Technology, Hoboken, NJ, USA, in 1977, and his PhD from Cornell University, Ithaca, NY, USA, in 1982. He was a Technical Staff Member of General David Sarnoff Microwave Technology and Research Center (previously RCA Sarnoff Research Center), Princeton, NJ, USA. He has served asProfessor, President and administrator at various Universities in the USA, Germany, UK, Japan, China, and Turkey. He is one of the founders of the Savronik Group of Companies and the founding chairman of RFT Research & Technology Corporation. He is the inventor/co-inventor of many RF and microwave circuit design methods known as the real frequency techniques, digital phase shifters, speech, image, and video encoding/decoding techniques known as SYMPES and the originator of the Sympes-Phone or in short Symphone. He has published more than 300 papers/technical reports and nine books and holds five US and nine Turkish Patents including Digital Phase Shifters, Sympes and Symphone patents.
Dr Yarman was the recipient of the Young Turkish Scientist Award of the Republic of Turkey (1986), the Technology Award of the Scientific and Research Council of Turkey (1987), the Research Award of the Alexander von Humboldt Foundation of Germany (1987), was selected as the Man of the Year in Science & Technology by Cambridge Biography Center, UK (1998), elevated to Fellow grade of IEEE (2004), Member of the New York Academy of Science (1998), and is a Life-Fellow of IEEE , Alexander Von Humboldt Fellow of Germany, and Salzburg Fellow of USIS .
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