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Signal Network Analyzer - RF Cafe Forums

RF Cafe Forums closed its virtual doors in 2010 mainly due to other social media platforms dominating public commenting venues. RF Cafe Forums began sometime around August of 2003 and was quite well-attended for many years. By 2010, Facebook and Twitter were overwhelmingly dominating online personal interaction, and RF Cafe Forums activity dropped off precipitously. Regardless, there are still lots of great posts in the archive that ware worth looking at. Below are the old forum threads, including responses to the original posts.

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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
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