[Amps] Autotuner for Amp Input

[Roger D Johnson]

Here is a good site for calculating impedance matching networks:

http://bwrc.eecs.berkeley.edu/research/rf/projects/60ghz/matching/impmatch.html

In the old days when exciters had tubes and tuned outputs, most linear 
amps had
input Qs of from 1 to 2 or thereabouts. With the advent of solid state 
exciters
without tunes outputs, the requirement seems to be for a higher Q to 
provide the
flywheel effect. Measures recommends a Q of 5based upon Eimac 
recommendations:

http://www.somis.org/D-amplifiers4.html

An L network matching 50 Ohms to 60 Ohms (3x3-500Z) has a Q of .44! I 
addition,
an L network will not match 50 Ohms to 50 Ohms. This requires a 3 
element network.

73, Roger