[Elecraft] [Was] Amp power per $$ spreadsheet download [Now] CW

[Phil Hystad]

I am not Jim but if you are asking for the math based reference for square waves…

http://en.wikipedia.org/wiki/Square_wave

73, phil, K7PEH


> On Apr 27, 2015, at 4:42 PM, Michael Zolno <luv.myipad3 at me.com> wrote:
> 
> Jim,
> 
> Can you point to a math based reference for this. I am curious (really). Any other non math based is appreciated as well if not immediately available.
> 
> All my best,
> 
> Mike WH6YH 
> 
> Sent from my iPad
> 
>>> On Apr 27, 2015, at 7:51 AM, elecraft-request at mailman.qth.net wrote:
>>> 
>>> On Sun,4/26/2015 10:33 PM, Vic Rosenthal wrote:
>>> Sharpening the envelope is harmonic distortion, not IMD. I think.
>> 
>> Nope. It's a bunch of square waves, and any square wave is composed of 
>> an infinite series of harmonics. Those frequencies are present in the 
>> drive signal (from small signal circuits to power amp circuits, whether 
>> in the rig or in a power amp), and if either is non-linear, distortion 
>> is produced.
>> 
>> It's important to realize that ANY non-linear element produces both IMD 
>> and harmonics -- indeed, in-band IMD is the result of the mixing of 
>> harmonics in a non-linear circuit. Quantities like IMD and THD are 
>> simply different ways of quantifying the distortion produced by 
>> non-linear devices!
>> 
>> 73, Jim K9YC
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