Surface Acoustic Wave Devices and Their Signal Processing Applications

Surface Acoustic Wave Devices and Their Signal Processing Applications

1st Edition - May 28, 1989

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  • Author: Colin Campbell
  • eBook ISBN: 9780323148665

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Surface Acoustic Wave Devices and Their Signal Processing Applications is a textbook that combines experiment and theory in assessing the signal processing applications of surface acoustic wave (SAW) devices. The operating principles of SAW devices are described from a circuit design viewpoint. This book is comprised of 18 chapters and begins with a historical background on surface acoustic waves and a discussion on the merits of SAW devices as well as their applications. The next chapter introduces the reader to the basics of acoustic waves and piezoelectricity, together with the effect of acoustic bulk waves on the performance of SAW filters. The principles of linear phase SAW filter design and equivalent circuit models for a SAW filter are then described. The remaining chapters focus on trade-offs in linear phase SAW filter design; compensation for second-order effects; harmonic SAW delay lines for gigahertz frequencies; and coding techniques using linear SAW transducers. The final chapter highlights Some other significant alternative design techniques and applications for SAW devices. This monograph will be suitable for engineering or physics students as well as engineers, scientists, and technical staff in industry who seek further information on SAW-based circuits, systems, and applications.

Table of Contents

  • Preface

    1 Introduction

    1.1 Historical Background

    1.2 Merits of SAW Devices

    1.3 Outline of SAW Device Applications

    1.4 Aims of This Text

    1.5 References

    2 Basics of Acoustic Waves and Piezoelectricity

    2.1 Introduction

    2.2 Surface Acoustic Waves

    2.3 Effect of Acoustic Bulk Waves on SAW Filter Performance

    2.4 Summary

    2.5 References

    3 Principles of Linear Phase SAW Filter Design

    3.1 Linear Phase Filters

    3.2 Deviations from Ideal Phase Response in SAW Filters

    3.3 Simple Modeling of an Ideal Linear Phase SAW Filter

    3.4 Fourier Transforms and IDT Finger Apodization

    3.5 Use of Window Functions for Improved Bandpass Response

    3.6 Overall SAW Filter Response

    3.7 Summary

    3.8 References

    4 Equivalent Circuit Models for a SAW Filter

    4.1 Introduction

    4.2 The Delta Function Model

    4.3 SAW Power Flow in Bidirectional IDTs

    4.4 The Crossed-Field Model

    4.5 Application to Overall SAW Filter Response

    4.6 Impulse Response Model

    4.7 Summary

    4.8 References

    5 Trade-Offs in Linear Phase SAW Filter Design

    5.1 Introduction

    5.2 Bandwidth Limitations in Linear Phase SAW Filter Design

    5.3 Design Trade-Offs

    5.4 Summary

    5.5 References

    6 Compensation for Second-Order Effects

    6.1 Introduction

    6.2 Finger Reflections

    6.3 Use of a Multistrip Coupler in Linear Phase SAW Filters

    6.4 Diffraction and Diffraction Compensation

    6.5 Acoustic Attenuation

    6.6 More on Triple-Transit Effects—Unidirectional IDTs

    6.7 Electromagnetic Feedthrough

    6.8 Summary

    6.9 References

    7 Designing SAW Filters for Arbitrary Amplitude/Phase Response

    7.1 Introduction

    7.2 Negative and Positive Frequency Concepts in IDT Design

    7.3 The IDT as a Sampled-Data Structure

    7.4 Sampling the IDT Fingers at Other Rates

    7.5 Summary

    7.6 References

    8 Finite Impulse Response Design Techniques for Linear Phase SAW Filters

    8.1 Introduction

    8.2 Some Digital Filter Concepts

    8.3 Using the Remez Algorithm for SAW Filter Design

    8.4 Baseband Designs and the Effect of Sampling

    8.5 Illustrative Remez Computations and SAW Filter Designs

    8.6 Summary

    8.7 References

    8A A Computer Program for SAW FIR Filter Design

    9 The SAW Linear FM Chirp Filter

    9.1 Introduction

    9.2 The IDT for a SAW Linear FM Chirp Filter

    9.3 The Slanted Array Compressor (SAC)

    9.4 The Reflective Array Compressor (RAC)

    9.5 SAW Chirp Filters in Pulse Compression Radar

    9.6 Variable Delay Lines Using SAW Chirp Filter

    9.7 Summary

    9.8 References

    10 The Two-Port SAW Resonator

    10.1 Introduction

    10.2 SAW Reflections and Reflection Gratings

    10.3 Design Parameters and Constraints

    10.4 Matrix Building Blocks for the SAW Resonator

    10.5 Summary

    10.6 References

    11 Harmonic SAW Delay Lines for Gigahertz Frequencies

    11.1 Introduction

    11.2 Harmonic Operation of Linear Phase SAW Filters

    11.3 Impulse Response Measurements as a Diagnostic Tool

    11.4 Summary

    11.5 References

    12 Comb and Single-Phase Unidirectional Transducers

    12.1 Introduction

    12.2 Basic SAW Comb Filters Using a Tapped IDT Delay Line

    12.3 SAW Comb Filters with More Complex IDT Structures

    12.4 SAW Filters with Single-Phase Unidirectional Transducers (SPUDTs)

    12.5 Illustrative Coupling-of-Modes Design of SPUDTBased SAW Filter

    12.6 Experimental Performance of SPUDT-Based SAW Filter

    12.7 Low-Loss SAW Comb Filters Using Unidirectional Transducers

    12.8 A Postscript on the Double-Metalization SPUDT

    12.9 Summary

    12.10 References

    13 Coding Techniques Using Linear SAW Transducers

    13.1 Introduction

    13.2 Matched Filter Concepts

    13.3 Rationale for Using Spread Spectrum

    13.4 Processing Gain with Binary Phase-Coded SAW IDTs

    13.5 Fixed-Code SAW Transducers for Binary Phase Shift Keying

    13.6 Second-Order Effects in SAW Tapped Delay Lines

    13.7 SAW Transducers for Quadraphase Code Generation

    13.8 SAW Filters for Continuous Phase Shift Modulation (CPSM)

    13.9 Programmable SAW Transversal Filters

    13.10 Summary

    13.11 References

    14 Real-Time SAW Convolvers

    14.1 Introduction

    14.2 Nonlinear Piezoelectric Behavior of SAW Devices

    14.3 Convolution Relations for the Elastic SAW Convolver

    14.4 Using the Elastic SAW Convolver as a Correlator

    14.5 The Monolithic Waveguide Type of SAW Convolver

    14.6 The Three-Port Acoustoelectric SAW Convolver

    14.7 The Four-Port Acoustoelectric SAW Convolver

    14.8 Synchronous and Asynchronous Operation of SAW Convolvers

    14.9 Summary

    14.10 References

    15 SAW Oscillators and Frequency Synthesizers

    15.1 Introduction

    15.2 Phase Noise Spectrum of an Oscillator

    15.3 SAW Oscillator Performance Expectations

    15.4 Time-Domain Oscillator Stability Measurements

    15.5 Single-Mode Fixed-Frequency SAW Oscillators

    15.6 Single-Mode Tunable SAW Oscillators

    15.7 Multimode SAW Oscillator

    15.8 A SAW-Based Frequency Synthesizer

    15.9 Summary

    15.10 References

    16 Real-Time SAW Fourier-Transform Processors

    16.1 Introduction

    16.2 Single-Stage SAW Fourier-Transform Processors

    16.3 Two-Stage Fourier-Transform Processors for Cepstrum Analysis

    16.4 Two-Stage SAW Transform Processor for Real-Time On-Line Filtering

    16.5 Use of SAW Bilinear Mixers

    16.6 Summary

    16.7 References

    17 SAW Filters in Digital Communications

    17.1 Introduction

    17.2 Review of Pertinent Codes and Power Spectra

    17.3 Nyquist Theorems and Filters

    17.4 Illustrative SAW Nyquist Filter Applications

    17.5 SAW Filters for Clock Recovery in Optical Fiber Data Systems

    17.6 Summary

    17.7 References

    18 Other Techniques and Developments

    18.1 Scope of This Chapter

    18.2 Withdrawal-Weighting Design of Interdigital Transducers

    18.3 Interdigital Transducers with Slanted- or Curved-Finger Geometries

    18.4 Reflective Dot Array (RDA) Compressor

    18.5 Techniques Using Half-Length Multistrip Coupler (MSC) Geometries

    18.6 Highlights of SAW-Based Acousto-Optic Techniques

    18.7 Further Developments in SAW-Based Devices on Gallium Arsenide

    18.8 Shallow Bulk Acoustic Wave (SBAW) Devices

    18.9 Summary

    18.10 References


Product details

  • No. of pages: 484
  • Language: English
  • Copyright: © Academic Press 1989
  • Published: May 28, 1989
  • Imprint: Academic Press
  • eBook ISBN: 9780323148665

About the Author

Colin Campbell

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