Cover image for Surface Acoustic Wave Filters : With Applications to Electronic Communications and Signal Processing.
Surface Acoustic Wave Filters : With Applications to Electronic Communications and Signal Processing.
Title:
Surface Acoustic Wave Filters : With Applications to Electronic Communications and Signal Processing.
Author:
Morgan, David.
ISBN:
9780080550138
Personal Author:
Edition:
2nd ed.
Physical Description:
1 online resource (448 pages)
Series:
Studies in Electrical and Electronic Engineering
Contents:
Front cover -- Surface Acoustic Wave Filters -- Copyright page -- Contents -- Preface -- Foreword to second edition -- Foreword to previous edition (1991) -- Chapter 1 Basic survey -- 1.1 Acoustic waves in solids -- 1.2 Propagation effects and materials -- 1.3 Basic properties of Interdigital Transducers -- 1.3.1 Transducer reflectivity and the triple-transit signal -- 1.3.2 Non-reflective transducers: delta-function model -- 1.4 Apodization and transversal filtering -- 1.5 Correlation and signal processing -- 1.6 Wireless interrogation: sensors and tags -- 1.7 Resonators and low-loss filters -- 1.7.1 Gratings and resonators -- 1.7.2 Low-loss filters for RF -- 1.7.3 Low-loss filters for IF -- 1.7.4 Performance of bandpass filters -- 1.8 Summary of devices and applications -- Chapter 2 Acoustic waves in elastic solids -- 2.1 Elasticity in anisotropic materials -- 2.1.1 Non-piezoelectric materials -- 2.1.2 Piezoelectric materials -- 2.2 Waves in isotropic materials -- 2.2.1 Plane waves -- 2.2.2 Rayleigh waves in a half-space -- 2.2.3 Shear-horizontal waves in a half-space -- 2.2.4 Waves in a layered half-space -- 2.2.5 Waves in a parallel-sided plate -- 2.3 Waves in anisotropic materials -- 2.3.1 Plane waves in an infinite medium -- 2.3.2 Theory for a piezoelectric half-space -- 2.3.3 Surface-wave solutions -- 2.3.4 Other solutions -- 2.3.5 Surface waves in layered substrates: perturbation theory -- Chapter 3 Electrical excitation at a plane surface -- 3.1 Electrostatic case -- 3.2 Piezoelectric half-space -- 3.3 Some properties of the effective permittivity -- 3.4 Green's function -- 3.5 Other applications of the effective permittivity -- Chapter 4 Propagation effects and materials -- 4.1 Diffraction and beam steering -- 4.1.1 Formulation using angular spectrum of plane waves -- 4.1.2 Beam steering in the near field.

4.1.3 Minimal-diffraction orientations -- 4.1.4 Diffracted field in the parabolic approximation: scaling -- 4.1.5 Two-transducer devices -- 4.2 Propagation loss and non-linear effects -- 4.3 Temperature effects and velocity errors -- 4.4 Materials for surface-wave devices -- 4.4.1 Orientation: Euler angles -- 4.4.2 Single-crystal materials -- 4.4.3 Thin films -- Chapter 5 Non-reflective transducers -- 5.1 Analysis for a general array of electrodes -- 5.1.1 The quasi-static approximation -- 5.1.2 Electrostatic equations and charge superposition -- 5.1.3 Current entering one electrode -- 5.1.4 Evaluation of the acoustic potential -- 5.2 Quasi-static analysis of transducers -- 5.2.1 Launching transducer -- 5.2.2 Transducer admittance -- 5.2.3 Receiving transducer -- 5.3 Summary and P-matrix formulation -- 5.4 Transducers with regular electrodes: element factor -- 5.5 Admittance of uniform transducers -- 5.5.1 Acoustic conductance and susceptance -- 5.5.2 Capacitance -- 5.5.3 Comparative performance -- 5.6 Two-transducer devices -- 5.6.1 Device using unapodized transducers -- 5.6.2 Device using an apodized transducer -- 5.6.3 Admittance of apodized transducers -- 5.6.4 Two-transducer device using a multistrip coupler -- Chapter 6 Bandpass filtering using non-reflective transducers -- 6.1 Basic properties of uniform transducers -- 6.2 Apodized transducer as a transversal filter -- 6.3 Design of transversal filters -- 6.3.1 Use of window functions -- 6.3.2 Optimized design: the Remez algorithm -- 6.3.3 Withdrawal weighting -- 6.4 Filter design and performance -- Chapter 7 Correlators for pulse compression radar and communications -- 7.1 Pulse compression radar -- 7.2 Chirp waveforms -- 7.2.1 Waveform characteristics -- 7.2.2 Weighting of linear-chirp filters -- 7.3 Interdigital chirp transducers and filters -- 7.3.1 Chirp transducer analysis.

7.3.2 Transducer design -- 7.3.3 Filter design and performance -- 7.4 Reflective array compressors -- 7.5 Doppler effects and spectral analysis -- 7.6 Correlation in spread-spectrum communications -- 7.6.1 Principles of spread-spectrum systems -- 7.6.2 Linear matched filters for PSK -- 7.6.3 Non-linear convolvers -- Chapter 8 Reflective gratings and transducers -- 8.1 Reflective array method for gratings and transducers -- 8.1.1 Infinite-length grating -- 8.1.2 Finite-length grating -- 8.1.3 Transducer with regular electrodes -- 8.1.4 Reflectivity and velocity for single-electrode transducers -- 8.2 Coupling of Modes (COM) Equations -- 8.2.1 Derivation of equations -- 8.2.2 General solution for a uniform transducer -- 8.2.3 The Natural SPUDT effect in single-electrode transducers -- 8.3 Numerical evaluation of COM parameters -- 8.3.1 Theoretical methods for periodic structures -- 8.3.2 Coupled-mode parameters from band edge frequencies -- Chapter 9 Unidirectional transducers and their application to bandpass filtering -- 9.1 General considerations -- 9.2 DART mechanism and analysis -- 9.3 Bandpass filtering using DARTs -- 9.4 Other SPUDT structures and analysis for parameters -- 9.5 Other SPUDT filters -- 9.6 Other low-loss techniques -- Chapter 10 Waveguides and transversely coupled resonator filters -- 10.1 Basic strip waveguides -- 10.2 Waveguide modes in interdigital devices -- 10.3 Analysis for general waveguides -- 10.4 Transversely-Coupled Resonator (TCR) filter -- 10.5 Unbound waveguide modes -- 10.6 Waveguides including electrode reflectivity -- Chapter 11 Resonators and resonator filters -- 11.1 Resonator types -- 11.1.1 Gratings and cavities -- 11.1.2 Single-port resonator -- 11.1.3 Two-port resonator -- 11.1.4 Single-electrode transducer as resonator -- 11.2 Surface-wave oscillators -- 11.3 Impedance Element Filters -- 11.4 Leaky waves.

11.4.1 Leaky waves and surface-skimming bulk waves -- 11.4.2 Leaky waves in lithium tantalate -- 11.4.3 Coupled-mode analysis of gratings and transducers -- 11.4.4 Other leaky waves -- 11.5 Longitudinally-Coupled Resonator (LCR) filters -- Appendix A: Fourier transforms and linear filters -- A.1 Fourier transforms -- A.2 Linear filters -- A.3 Matched filtering -- A.4 Non-uniform sampling -- A.5 Some properties of bandpass waveforms -- A.6 Hilbert transforms -- Appendix B: Reciprocity -- B.1 General relation for a mechanically free surface -- B.2 Reciprocity for two-terminal transducers -- B.3 Symmetry of the green's function -- B.4 Reciprocity for surface excitation of a half-space -- B.5 Reciprocity for surface-wave transducers -- B.6 Surface-wave generation -- Appendix C: Elemental charge density for regular electrodes -- C.1 Some properties of legendre functions -- C.2 Elemental charge density -- C.3 Net charges on electrodes -- Appendix D: P-matrix relations -- D.1 General relations -- D.2 Cascading formulae -- Appendix E: Electrical loading in an array of regular electrodes -- E.1 General solution for low frequencies -- E.2 Propagation outside the stop band -- E.3 Stop bands -- E.4 Theory of the multistrip coupler -- Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- K -- L -- M -- N -- O -- P -- Q -- R -- S -- T -- U -- V -- W -- Z.
Abstract:
This book gives the fundamental principles and device design techniques for surface acoustic wave filters. It covers the devices in widespread use today: bandpass and pulse compression filters, correlators and non-linear convolvers and resonators. The newest technologies for low bandpass filters are fully covered such as unidirectional transducers, resonators in impedance element filters, resonators in double-mode surface acoustic wave filters and transverse-coupled resonators using waveguides. The book covers the theory of acoustic wave physics, the piezoelectric effect, electrostatics at a surface, effective permittivity, piezoelectric SAW excitation and reception, and the SAW element factor. These are the main requirements for developing quasi-static theory, which gives a basis for the non-reflective transducers in transversal bandpass filters and interdigital pulse compression filters. It is also needed for the reflective transducers used in the newer devices. * A thorough revision of a classic on surface acoustic wave filters first published in 1985 and still in print * Uniquely combines easy -to -understand principles with practical design techniques for all the devices in widespread use today * Complete coverage of all the latest devices which are key to mobile phones, TVs and radar systems * Includes a new foreword by Sir Eric Albert Ash.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
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