Surface Acoustic Wave Filters

This book offers 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 with 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, electrostatic at the surface, effective permittivity, piezoelectric SAW excitation and reception, and the SAW element factor. These are the main requirements for the development of 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 the surface of acoustic wave filters in 1985 and still in print
* Uniquely combines easy -to -understand principles with practical design techniques for widespread use today
* Complete coverage of mobile devices, TVs and radar systems
* Includes a new foreword by Sir Eric Albert Ash

Preface; Foreword; Basic Survey; Acoustic waves in elastic solids; Electrical excitation at a plane surface; Propagation effects and materials; Non-reflective transducers; Bandpass filtering using non-reflective transducers; Correlators for pulse compression radar and communications; Reflective gratings and transducers; Unidirectional transducers and their application to bandpass filtering; Waveguides and transversely-coupled resonator (TCR) filters; Resonators and resonator filters; Appendix A. Fourier transforms and linear filters; Appendix B. Reciprocity; Appendix C. Elemental charge density for regular electrodes; Appendix D. P-matrix relations; Appendix E. Electrical loading in an array of regular electrodes