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Measuring S param. on 0402 RF boards using tiny semirigid - 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: Measuring S param. on 0402 RF boards using tiny semirigid
Posted: Wed Jul 12, 2006 3:04 pm 
User avatar

Joined: Wed Jul 12, 2006 2:20 pm
Posts: 4
Location: Arizona
I cannot believe I cannot find a solution!
I am trying to find a way of calibrating small tiny semirigid coax cables ( 1.2mm diameter ) for measuring S param. on RF boards populated with 0402 components. I tried soldering one end of this semirigid on a SMA connector already mounted on RF board, to use it as a reliable way of connecting my calibration kit and use it for reflection calibration.
Then I use a semirigid coax cable ( both ends SMA terminated ) to calibrate the trasmission, but at the end of calibration procedure, the measurements I took, differ a lot from "clasical calibration" ( the one which is using just simple coax cables ).
Where am I wrong ? What is going on?
ADS said that is very difficult to calibrate such stuff on 8753E unless I am using an additional software.
Please advise. Your help will be greatly appreciated.

 Post subject: Kirt, or Jerry please give me a solution
Posted: Thu Jul 13, 2006 5:34 pm 
User avatar

Joined: Wed Jul 12, 2006 2:20 pm
Posts: 4
Location: Arizona
So, I am still waiting for at an idea.
I do not think nobody used to work on 0402 parts.
Please !

Posted  11/12/2012
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