Practical RF circuit design for modern wireless systems

The first of a two-volume set, this leading-edge book takes a practical approach to RF circuit design, offering a complete understanding of the fundamental concepts you need to know and use for your work in this industry. The book lays the ground work for efficient RF circuit design in a step-by-step approach, by defining important principles and parameters and progressively introducing critical analytical tools. It helps you distinguish between RF and low frequency circuits, and offers a detailed look at a typical RF system. This is a tested and insightful book that contains answers to most of the questions practical engineers are asking. The first volume reviews various computer-aided simulation, synthesis, and optimization techniques used in modern RF and microwave design, and discusses the practical use of the graphical design tools, such as the Smith Chart.

Other key topics include passive component modeling, impedance matching, and lumped and distributed filters. Moreover, the authors present an introduction to high-speed circuit design considerations faced by the digital designer at high clock speeds. The book makes extensive use of state-or-the-art CAD programs to illustrate the concepts and theory, and is lavishly illustrated with examples.

This text is guaranteed to provide even the most experienced RF designer with fresh, intuitive insight into circuit operation, and will be as useful at universities as a course text on practical RF circuit design, as it will in industry as a training refresher.

Contents

• Introduction
  • Defining RF
  • Circuits and systems
  • Wireless
  • Conclusion Reference
• RF circuit fundamentals
  • Introduction
  • The decibel scale
  • Complex number review
  • Normalization
  • R-L-C voltage-current relationships
  • Complex impedance and admittance systems
  • Unloaded ami loaded Q definitions
  • Complex series impedance of RF components
  • Complex parallel admittance ot RF components
  • Series and parallel L-C resonant circuits
  • Series and parallel conversions ol lumped R-L-C networks
  • One-port and inultiport network;
  • Importance of power transfer when cascading system components
  • Importance of impedance matching
  • RF components and related issues
  • Lumped elements versus transmission lines
  • Circuit parameters using wave relations
  • Impedance transformation and matching
  • Single-ended versus differential circuits
  • L'imc domain versus frequency domain
  • Summary
  • References
  • Selected bibliography
• The radio as typical RF system
  • Receiver architecture
  • Receiver characterization
  • Analysis of a CDMA receiver handset
  • Problems
  • References
• The Smith chart and S-parameters
  • Introduction
  • The Smith chart: a polar plot of reflection coefficient
  • The admittance Smith chart
  • Circuit manipulations using series and parallel components
  • The immitancc (Z-Y) Smith chart
  • Constant Q curves on the Smith chart
  • Negative reactive elements
  • Negative resistance and the extended Smith chart
  • Transmission line manipulations on the Smith chart
  • Matrix descriptions of networks
  • The scattering (,S) matrix
  • The network analyzer
  • S-paramctcr measurements
  • Two-port gain expressions in terms of S-parameters
  • Cascading two-ports with, i'-parameters
  • Multiport S-para meters
  • Generalized two-port S-parameters
  • Mixed-mode S-parametcrs
  • Summary References Selected bibliography
• Impedance matching techniques
  • The impedance match
  • Transmission zero definitions
  • Impedance matching into complex termination
  • Impedance matching with uneven resistive terminations
  • The Q matching technique with L-C sections
  • Impedance matching of complex terminations
  • Multisectiori impedance matching to increase bandwidth
  • Multisection impedance matching to decrease bandwidth
  • Impedance matching with transmission line components
  • Impedance matching with transmission lines on the Smith chart
  • Impedance matching of balanced circuits
  • Answers to illustrative exercise of Section 5.2.1 (circuit 4)
  • Summary References Selected bibliography
• CAE/CAD of linear RF/MW circuits
  • Introduction
  • Historical review
  • Analysis versus synthesis and optimization
  • Circuit simulation techniques
  • Impedance mapping
  • Component tuning
  • Circuit optimization
  • Statistical design techniques
  • Circuit synthesis
  • Electromagnetic field simulation
  • CAD program descriptions
  • Summary Preferences
• Passive component models
  • Introduction
  • Resistance, self-inductance, and stray capacitance ot conductors
  • Frequency response of physical resistors
  • Modeling physical inductors
  • Ferrite beads
  • Physical capacitor models
  • Via hole models
  • Planar transmission lines for RF/MW applications
  • Dielectric board materials
  • Transformers
  • Crystal resonators and models
  • Surface acoustic wave resonators
  • Dielectric resonators
  • Component measurements and modeling
  • Summary References
• Filters and resonant circuits
  • Introduction
  • Filter specifications
  • Various filter types
  • Low-frcquency versus RF/MW filters
  • Comparison of filter responses
  • Multiplexer filters
  • Filter design outline
  • Transmission line (distributed-element) filters
  • Network transformations
  • L-C resonant circuits in filter design
  • Other forms of resonators
  • Summary
  • References
  • Selected bibliography
• Similarities and differences of RF and high-speed digital designs
  • Historical perspective of analog RF and digital designs
  • Time-domain and voltage-current parameters (transition times, delays, skew, and signal levels)
  • Crosstalk versus coupling
  • R-L-C models for digital applications
  • Parasitics of passive interconnects, loading, vias. and losses
  • Frequency-domain versus time-domain considerations
  • Measurement and simulation considerations
  • References
  • Selected bibliography
• Appendix
  • Summary of Basic Formulas -1
  • Summary of Basic Formulas - 2
• About the Authors
• Index