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Preface
ix
in this book was a most valuable teaching aid. All students were encouraged
to acquire at least a hand-held computer; university desktop personal computers
were available, but many industrial students had their own.
This material was taught three times as a 48-hour industrial seminar for
practicing engineers who desired a cognitive overview of the field with
emphasis on personal computing. Approximately 6 hours of study per chapter
should be spent for all but Chapter One, and good visual aids and computer
TV monitors are required in the classroom. More limited seminars may also
be taught as follows: numerical methods in Chapters Two and Five; numerical
methods, filter synthesis, and elliptic filters in Chapters Two, Three, and
Sections 9.2-9.4; ladder network analysis and sensitivities in Chapter Four;
impedance matching and direct-coupled and stub filters in Sections 6.1-6.5,
Chapter Eight, and Section 9.1; and linear amplifiers, impedance mapping,
and filter-load effects in Chapter Seven and Sections 9.5 and 9.6. Individual
engineers with some familiarity with the subject will find this book a good
basis for review and discovery of new design methods and programs. Access
to or ownership of a desktop computer is a necessity; the minimum requirement
is ownership .of a programmable hand-held calculator and access to a
desktop computer or a readily accessible, responsive computer terminal to run
BASIC language programs.
I wish to express my deep appreciation to colleagues at Collins Radio
Company, Texas Instruments, and Rockwell International for their suggestions,
constructive criticism, and other contributions to understanding. Special
recognition is due to Dr. Kenneth W. Heizer, Southern Methodist University,
who endured years of my questions concerning technical relevance and
origins. His knowledge and patience satisfied my aspiration for both generality
and applicability.
Plano, Texas
December 1982
THOMAS R. CUTHBERT, JR.