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Multicarrier Intermodulation products - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 Post subject: Multicarrier Intermodulation products
Posted: Mon Jan 09, 2012 12:54 pm 
 
Captain
User avatar

Joined: Tue Sep 04, 2007 7:54 am
Posts: 16
Location: Dallas
Hello,

This is regarding the intermodulation products from Multicarrier transmission. Suppose I have six carriers (1840.6 Mhz,1841.6Mhz,1842.6MHz,1843.6MHz,1844.6 MHz and 1845.6 MHz) spaced 1Mhz apart and fed to a power amplifier.
In this case howmany pure IM3 products will be there?. I did excel calculation and come up with 30 IM3 products(calculated using 2*f2-f1....). Is this correct?
How many IM5 and IM7 products?
Has anybody got excel/matlab for making this type of calculations?
Appreciate your help.





Posted  11/12/2012
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