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Need help in Calibration of Directional Coupler
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Need help in Calibration of Directional Coupler
Need help in Calibration of Directional Coupler
Need help in Calibration of Directional Coupler
Need help in Calibration of Directional Coupler
Need help in Calibration of Directional Coupler
Need help in Calibration of Directional Coupler
Need help in Calibration of Directional Coupler
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  Post Number #1  
Old 13th February 2018, 01:25 PM
mkabiel

 
 
Total Posts: 11
Please Help! Need help in Calibration of Directional Coupler

I need to calibrate a directional coupler using microwave signal generator and power meter and power sensor?

Last edited by mkabiel; 13th February 2018 at 01:35 PM.

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  Post Number #2  
Old 13th February 2018, 07:25 PM
Ninja's Avatar
Ninja

 
 
Total Posts: 881
Re: Need help in Calibration of Directional Coupler

Looks like a statement with a question mark at the end...

What is your question?
  Post Number #3  
Old 14th February 2018, 08:29 AM
dwperron

 
 
Total Posts: 167
Re: Need help in Calibration of Directional Coupler

First you need to calculate the power output of your signal generator using the power meter. Collect data for the frequency points of interest to you.

Next you need to calculate insertion loss for the coupler. Attach the input of the coupler to the generator, the power sensor to the output, and a termination to the coupled port. Record data for the same frequencies that you collected as data, save this for calculating the coupling factor. Then subtract this from the data you recorded previously to determine the insertion loss of the coupler. Report this data on your calibration report.

Now move the termination to the coupler output and the power sensor to the coupled port. Measure the output at the coupled port for the same frequencies, and subtract that from the data you collected earlier to calculate the coupling factor. Record this data on your calibration report.
Thanks to dwperron for your informative Post and/or Attachment!
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