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Can we edit dataset Values of dB in ADS2011

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hari_preetha

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Dear Friends,

Can we edit dB values of data values in ADS2011 and can we convert edited dB values into Magnitude and Phase values using ADS2011.

I have shown below data windows of dB values of S11, S21, S12, and S22, I need to edit these values dB and then convert it into Magnitude and phase values using ADS2011. How to get edit values in ADS2011, can you guide me.
 

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  • Editing_dB_Values_into_SomeotherValues.jpg
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Why not let ADS do the task for you. Instead of displaying dB(S(2,1)) etc in the table if you displayed just S(2,1) then that column would display the s-parameter data in magnitude/angle format automatically. If you want to see the data in separate columns then edit the trace expressions to be either mag(S(2,1)) or phase(S(2,1)) etc and the data will be displayed in that format with no other calculations required.
 
If you want to see the data in separate columns then edit the trace expressions to be either mag(S(2,1)) or phase(S(2,1)) etc and the data will be displayed in that format with no other calculations required.

I tried, now I am getting.
But my question is, can we edit dB values to our own values. For example, S21 in dB for 400 MHz 20.263 is generated automatically, when we simulate it. But I want change this S21 in dB for 400 MHz to some other our own value 18.134 dB and can we generate the equivalent Magnitude and Angle for our own Value 18.134 dB of S21 in dB. Is it possible to change S21 in dB, S12 in dB, S11 in dB, S22 in dB to our own values and generate equivalent Magnitude and Phase Values.
Is this above mentioned option possible in ADS2011, can you guide me, how to change our own dB values and generate Magnitude and Phase values rather automatically generated dB values to Magnitude and Phase values.
 

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Is it possible to change S21 in dB, S12 in dB, S11 in dB, S22 in dB to our own values and generate equivalent Magnitude and Phase Values.
Yes, it is possible.

Export data as Touchstone, CITI or MDIF format.
Then edit text data. And reload modified data.

https://edadocs.software.keysight.c...ta+Files#WorkingwithDataFiles-SavingaDataFile

Or simply do following in the Data Display Window.
S_new = S
freq_index= find_index(freq, 400MHz)
S_new(1,1)[freq_index] = polar(10**(new_mag11_dB/20), new_phase11_deg)
S_new(1,2)[freq_index] = polar(10**(new_mag12_dB/20), new_phase12_deg)
S_new(2,1)[freq_index] = polar(10**(new_mag21_dB/20), new_phase21_deg)
S_new(2,2)[freq_index] = polar(10**(new_mag22_dB/20), new_phase22_deg)

how to change our own dB values and generate Magnitude and Phase values rather automatically generated dB values to Magnitude and Phase values.
Simply, choose Mag/Angle option as trace option.

S is complex value matrix.
Since you apply dB() fuction for S, you can not display phase information.

List mag(s(*,*)) and phase(S(*,*))
https://edadocs.software.keysight.com/display/ads2009/Traces
 
Last edited:

S_new(1,1)[freq_index] = polar(10**(new_mag11_dB/20), new_phase11_deg)
S_new(1,2)[freq_index] = polar(10**(new_mag12_dB/20), new_phase12_deg)
S_new(2,1)[freq_index] = polar(10**(new_mag21_dB/20), new_phase21_deg)
S_new(2,2)[freq_index] = polar(10**(new_mag22_dB/20), new_phase22_deg)

Simply, choose Mag/Angle option as trace option.

S is complex value matrix.
Since you apply dB() fuction for S, you can not display phase information.

How I have to do in the above said and Where I have to write and How I have to excute it. I am totally confused it.
 

Gentlemen, this is great. My amplifier simulated with ADS now has 90dB gain and +80dBm output power at 5V supply voltage.
 

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