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Johanson Technology Chip Antennas - RF Cafe

Out of Band IM Analysis - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues - primarily having to spend time purging garbage posts from the board. At some point I might start the RF Cafe Forums again if the phpBB software gets better at filtering spam.

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Zak77
 Post subject: Out of Band IM Analysis
Posted: Thu Jan 31, 2008 8:30 pm 
 
Lieutenant

Joined: Thu Jan 31, 2008 7:25 pm
Posts: 1
Location: San Jose, CA
Hi,

I thought I'd ask this question.
I am conducting some out of Band IM analysis for a site that has some 800 MHz, UHF and VHF transmitters and I am seeing lots of hits on the UHF and the VHF channels. I know that these are theorethical hits and that most of them would look like noise.
Does it make sense to analyze all 3 bands together or should I look only at the In-Band IM ?

Thanks


 
   
 
IR
 Post subject:
Posted: Fri Feb 22, 2008 1:02 pm 
 
Site Admin
User avatar

Joined: Mon Jun 27, 2005 2:02 pm
Posts: 406
Location: Germany
Hello Zak77,

If by IM you mean intermodulations, the only crucial ones are those appearing in the in-band.

The others will be anyway much lower and can't disturb the signal.






Posted  11/12/2012
Johanson Technology Chip Antennas - RF Cafe