Last Update (30Nov 2015)
Errata for Experimental Methods in RF
Design and Intro. to RF Design.
I have decided to move to a more compact format for the
EMRFD errata. There is only one set of files that
encompasses all printings.
the photo to access the errata menu.
Introduction to RF Design (IRFD) has been discontinued by the
Click here for IRFD information.
Some articles that expand upon EMRFD subjects:
A complete book abstract.
Designing High Order LC
Bandpass Filters from EMRFD (15Aug12)
Form LC Bandpass Filters (basic theory)
Transformer Coupled LC Bandpass Filters
More on the
EMRFD "First Transmitter" from Chapter 1.
An Oscillator Scheme
for Quartz Crystal Characterization (15Aug12)
Building Practical Double-Tuned Circuits
with EMRFD Procedures (12Feb13)
Filter Design Aid (a program) (Windows program
for PC) (15Apr13)
Coil winding aid
(program) (Windows program for PC)
(28Jan14) Wind toroids
with turns in a single layer spread over almost all of the core.
This is not a "rule." It's just what was done for the
formula used in this program. Wind solenoid
coils with a constant pitch, ideally with some spacing between
wires. Then measure the coil L when you are done.
Small Signal Amplifier Design
All three of these articles are mathematical.
It's not heavy duty mathematics, but just some
algebra. Also, note that the analysis and design
equations all relate to the small signal behavior of the amplifier
stages. The analysis does NOT predict noise or
distortion properties. The articles are:
A Termination Insensitive
Amplifier for Bidirectional Transceivers (with
Bob Kopski, K3NHI)
The Feedback Amplifier with a
(This is the math for the other two articles.)
Transistor Models and the Feedback Amplifier
This one includes some measurement data.