Looking for a formula for intermodulation - RF Cafe Forums

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Geof Gibson

Post subject: Looking for a formula for intermodulation

Posted: Tue May 31, 2005 5:23 pm

Hi,
I'm looking for math and formulas behind calculating intermodulation products. I know the fundamentals; a+b+c+d, a+b+c-d, etc.
What I'm trying to find are formulas which can be used to take n=number of frequencies, o=order, and calculate all the intermod. products that fall within a given range.
Any pointers to this information would be greatly appreciated.
Thank you.
I can be reached at geofgibson@cox.net

Kirt Blattenberger

Post subject:

Posted: Wed Jun 01, 2005 8:41 pm

Site Admin

Joined: Sun Aug 03, 2003 2:02 pm
Posts: 653
Location: Erie, PA

Greetings Geof:

I believe this paper, by Chris Arnott (whom I worked with at one time), is what you are looking for.

"A General Algorithm to Calculate Third Order Intermodulation Product Locations for any Number of Tones"

http://www.cedmagazine.com/ced/2001/0201/webx/x02.htm

It can also be found as a link on RF Cafe on the App Notes page (1) and on the Electrical Formulas & Reference page (2).

(1) http://www.rfcafe.com/references/app-notes.htm
(2) http://www.rfcafe.com/references/electrical.htm

- Kirt Blattenberger :smt024

Posted 11/12/2012

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