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SOLT and TRL - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


shireesha
 Post subject: SOLT and TRL
Posted: Mon Mar 15, 2010 1:00 am 
 
Captain

Joined: Wed Jun 04, 2008 3:23 am
Posts: 11
Would it be possible to elucidate why SOLT is the preffered mode of calibration at low frequencies and TRL at higher frequencies? What is generally the more accurate mode of calibration?


 
   
 
Kirt Blattenberger
 Post subject: Re: SOLT and TRL
Unread postPosted: Mon Mar 29, 2010 9:40 pm 
 
Site Admin
 

Joined: Sun Aug 03, 2003 2:02 pm
Posts: 308
Location: Erie, PA
Greetings shireesha:

I am not an expert on the SOLT vs. TRL calibrations, but I have read that the difficulty in making a good open circuit cal standard at really high frequencies is the reason. Here is an excerpt from "Microwave Measurements," by Richard J. Collier, A. Douglas Skinner

http://books.google.com/books?id=jhzfMLh9gFoC&pg=PA238&lpg=PA238&dq=trl+solt+calibration+preferred+frequency&source=bl&ots=VU_TafJRxF&sig=nA0YLodGT7Hbr6dIOhjdzGOP1v0&hl=en&ei=ZlWxS9WnDIL78AaQye3NAQ&sa=X&oi=book_result&ct=result&resnum=8&ved=0CCEQ6AEwBzgK#v=onepage&q=trl%20solt%20calibration%20preferred%20frequency&f=false

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ashishbondia
 Post subject: Re: SOLT and TRL
Posted: Wed Mar 31, 2010 1:32 am 
 
Captain
 

Joined: Wed Aug 16, 2006 8:20 am
Posts: 23
Location: India
If you want to use TRL at low frequencies than the size of the calibration standard (line section) will be very large....

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Ashish Bondia,
Design Engineer- RF






Posted  11/12/2012

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