|Book Name:||Design of Digital Phase Shifters for Multipurpose Communication Systems|
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Design of Digital Phase Shifters for Multipurpose Communication Systems aims to cover a new emerging need in designing digital phase shifters for modern communication systems. With the advancement of new-generation mobile communication systems, directed beams save a substantial amount of RF power and improve noise immunity. In this regard, beam-forming circuits, namely digital phase shifters, constitute essential parts of the antenna arrays. Therefore, this book is devoted to the design of digital phase shifters for various communications systems.
In the good old days, phase shifter design requirements were used to demand narrow bandwidth with no physical size constraints. Nowadays, they must be compact and suitable for Very Large Scale Integrated Circuits (VLSI) or Microwave Monolithic Integrated Circuit (MMIC) implementation with Wide Phase Range (WPR) and Wide Frequency Band (WFB).
Since the 1980s, the author has been designing digital phase shifters for various applications. He started to work with loaded lines phase shifters and then employed branch line couplers to achieve wider frequency bands. To reduce the physical size, he used a 3-element Symmetric LC ladder-based T or PI configuration. In order to achieve a broad frequency band with a large phase range, the usage of LC lattice structures is inevitable. Lately, the author has designed phase shifters using both lowpass and highpass LC ladders and lattice-based switched-structures, which are suitable for monolithic implementation. In the course of design, MOS transistors were employed as switching elements. This book includes several novel digital phase shifter topologies, which provide wide phase range and wideband operation.
Technical topics discussed in the book include- Basic Concept of Antenna Arrays- The concept of Digital Phase Bit- Scattering Parameters to analyze the electric performance of phase shifters- Transmission Lines as circuit elements to construct practical phase shifters- Loaded Line Digital Phase Shifters (DPS)- Lowpass Based T/PI Section DPS- Highpass Based T/PI Section DPS- 3-Element LC T/PI Section DPS- Wide Phase Range, Wide Frequency Band Symmetric Lattice-Based DPS.
For each topology presented, explicit design equations are provided, and programs to assess the electric performance of each topology are developed in a MatLab environment. It is expected that the reader will be self-sufficient in designing and implementing the digital phase shifters topologies presented in this book.
Design of Digital Phase Shifters for Multipurpose Communication Systems PDF
Author(s): Binboga Siddik Yarman
Series: River Publishers Series in Communications
Publisher: River Publishers, Year: 2022