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Combine TRL/TRM to work from 10 MHz to 9 GHz.

Question asked by mikejvir- on Aug 18, 2015
Hello All,

     I am attempting to do a TRL calibration from 10 MHz to 9 GHz.  Because of the frequency range, I want to do both a TRL and  TRM calibration. I just want to make sure I am doing the definitions correctly.  I am currently using a PXI VNA (M9372A) but will need to make it work on a ENA –B (E5071B).

Standards

Name   FMIN     FMAX       Z0
        (MHz)    (MHz)    (ohms)
OPEN       0    999000     50
SHORT      0    999000     50
LOAD       0    999000     50
THRU       0    999000     50
LINE1   1600     12800     50


Class Assignment

Class           Standard
TRL THRU         THRU
TRL REFLECT      OPEN, SHORT, LOAD
TRL LINE/MATCH   LINE1, LOAD
TRL ISOLATION    none

SOLT SA          OPEN
SOLT SB          SHORT
SOLT SC          LOAD
FWD/REV Trans    THRU

(New Cal Kit Editor forces the SOLT assignments)

I would appreciate that the above is correct.

With the PXI VNA, I also think  issues I did not take into account.

The TRL match I have has a return loss better than 25 dB below 1.6 GHz.  I am assuming this is good enough.  

When I attempt  use the LOAD for the low frequency (10 MHz to 1600 MHz) it looks like I need to have both Port 1 and Port 2.   I only have one termination on the board.  Can it be down with only 1 LOAD termination?

Have I made any mistakes?  If so, please let me know.

Thanks in advance.


Mike Virostko
Integrated Device Technology, Inc

Edited by: mikejvir- on Aug 18, 2015 3:31 PM  

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