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Signal Network Analyzer - 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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Edstroyer
 Post subject: Signal Network Analyzer
Posted: Sat Dec 11, 2004 1:38 am 
any idea how to make one, links about concept and implementation would be nice .

Edstroyer


 
  
 
muralimohan v
 Post subject: Re: Signal Network Analyzer
Posted: Fri Dec 17, 2004 4:10 am 
Edstroyer wrote:
any idea how to make one, links about concept and implementation would be nice .

Edstroyer


 
  
 
soda
 Post subject: network analizer
Posted: Fri Dec 17, 2004 3:21 pm 
Very simple, take the ad8302 from analog devices, and you are almost done.
Add a directional coupler, a Rf signal source and thats it.
For more details see the ad8302 datasheet.
Maybe u would like to order the evaluation board...


 
  
 
barb wire
 Post subject: 8302 eval bd
Posted: Thu Apr 28, 2005 5:09 pm 
hi all,
is there a user group for the ad8302 anywhere ?
i bought the eval bd from analog devices and use
it often. and want to visit with other users
the closest thing i have found is a yahoo group
that uses the 8302 with a 9851 dds and some s/w
bw


 
  
 
Graham
 Post subject:
Posted: Fri Sep 02, 2005 9:16 pm 
 
Colonel
User avatar

Joined: Fri Sep 02, 2005 7:25 pm
Posts: 34
Location: Hampshire UK
Unfortunately, the AD8302 method of measuring phase is not very accurate near the match ( 0 degree and 180 degree). Also, it works best with signals that are both nearly the same. So you need a lot of ways to contrive this, and to keep account of attenuators and gains.

I am sure it can be useful, especially in transmitter monitoring and in control loops, and even to be the heart of a cheaper network analyser, but I am thinking that real industry network analysers are unaffordable to guys like me for a reason.


 
   
 
jabidof
 Post subject: How good is the AD8302 for SWR meter application?
Posted: Tue Oct 11, 2005 9:07 am 
Has someone any practice to share?

BR
JPC



Posted  11/12/2012