Linear Amplifiers may or may not be conjugately matched. For maximum power
transfer to occur both in and out, and for the amplifier to be
unconditionally stable, there must be a simultaneous conjugate match.
This is not always easy as the input match affects the input match and visa
versa. However, it CAN be done.
Billy Dean Ward
>From: Jon Ogden <na9d@speakeasy.net>
>To: measures <2@vc.net>, Phil Clements <philk5pc@tyler.net>, AMPS
><amps@contesting.com>
>Subject: Re: [AMPS] Conjugate Matching In Class B and C Amplifiers
To: <amps@contesting.com>
>Date: Fri, 11 May 2001 18:18:30 -0500
>
>
>on 5/11/01 1:12 PM, measures at 2@vc.net wrote:
>
> >> W/o having read them, I'll confess that I am at a loss to know the back
> >> ground. What is the debate?
> >>
> > As I understand it, Mr. Maxwell asserts that linear amplifiers are
> > conjugately matched. If this is true, the efficiency could not exceed
> > 50%.
>
>OK. You are correct Rich. If conjugate match occurs, then an equal amount
>of power is absorbed by both source and load - hence the 50% efficiency.
>
>Conjugate match IS what is needed for maximum power transfer, but not
>maximum efficiency. It's another one of those paradoxes of physics.
>
>73,
>
>Jon
>NA9D
>
>-------------------------------------
>Jon Ogden
>NA9D (ex: KE9NA)
>
>Member: ARRL, AMSAT, DXCC, NRA
>
>http://www.qsl.net/ke9na
>
>"A life lived in fear is a life half lived."
>
>
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