download searchable PDF of Circuit Design book - IEEE Global ...

viii
Preface
computer. Excessive theoretical analysis has been avoided by providing references
to more detailed explanations; these also provide the interested student
with efficient avenues for further investigation.
This book is intended for practicing electrical engineers and for university
students with at least senior-class standing. The topics should also interest
electronics engineers who design circuits derived in terms of complex variables
and functions to provide impedance matching, filtering, and linear amplification.
Circuits operating from very low frequency through millimeter waves can
be designed by these techniques. The necessary numerical methods should
also interest those who d" not have specific applications.
The numerical methods include solution of complex linear equations,
integration, curve fitting by rational functions, nonlinear optimization, and
operations on complex polynomials. These programmed tools are applied to
examples of filter synthesis to illustrate the subject as well as the numerical
methods. Several powerful direct-design methods for filters are described, and
both single-frequency and broadband impedance-matching techniques and
limitations are explained. An efficient ladder network analysis method, suitable
for hand-held or larger computers, is described and programmed for
confirming network design and evaluating various effects, including component
sensitivities. Linear-amplifier design theory is based on the concept of
bilinear transformations and the popular impedance-mapping technique. This
also enables a description of load effects on passive networks and is the design
basis of filters that absorb rather than reflect energy.
The methods are supported by seventeen programs in reverse Polish notation
(RPN) for Hewlett-Packard HP-67 and HP-97 hand-held programmable
calculators and, with minor modifications, for models HP-4IC and HP-98l5.
There are also 28 programs in Microsoft BASIC language for PET and similar
desktop computers. PET is a registered trademark of Commodore Business
Machines, a division of Commodore International. Microsoft Consumer Products
has furnished a consistent and widely accepted BASIC programming
language to many prominent personal-computer manufacturers. Some of the
BASIC programs are short enough for hand-held computers, but most require
a desktop computer having several thousand bytes of random-access memory
and appropriate speed. Each chapter, except for the introduction, contains a
set of problems, most of which require a hand-held calculator for solution.
The material in this book was and is being used in a two-semester
graduate-level course at Southern Methodist University. The first semester
covered numerical methods-including optimization, examples of filter synthesis,
and ladder network analysis-contained in Chapters Two through Five.
The more specialized, second-semester content included impedance matching,
linear amplifier design, direct-coupled filters, and the other direct filter design
methods in Chapters Six through Nine. The course was taught with several
students in the classroom and the majority on a closed-circuit television
network that included video output from a desktop, BASIC language personal
computer on the instructor's desk. The ability to edit and rerun the programs