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I’m going to insert a Smith chart. And remember, our S-parameter data and our Harmonic Balance
data is in this dataset. So, I will select S11, because it’s only a one-port. If I
had more than one port I would see those other measurements here. So, I’ll simply add S11.
And here it is on the Smith chart.
Now, for the markers, the marker is easily attached to any trace by using this marker
icon right here, and you’re prompted to put that marker on a trace. It can be that
trace. We can get another one and put it on our Smith chart. Notice the readout. You can
move it around, and you can also edit the marker properties. Simply double-click on
the readout, and here you can see the dialog that appears. In this main tab you can change
the marker name, so it doesn’t have to be M1, M2, M3. You could name it whatever you
want. Simply type-in a name and you’ll see that on the readout.
The type is either normal, with peak, valley, min/max, and that’s the same as the icons.
If you go to the format and you’re on a Smith chart, you could also have admittance.
You can change it from the format of real and imaginary, to magnitude and phase, whatever
you like to read it out as. And finally, here, for the impedance, the reference impedance
can be 50, or 75, or whatever you want to use. So, all of this is available, including
changing the symbol. That’s the normal symbol, but any of these – even the font, you could
change colors for markers. So, all of this is available, and I suggest trying them when
you can. So, those are the marker properties.
To move a marker, simply drag it. Or, in the case of this S-parameter on the Smith chart,
you can insert it, insert the cursor right into the readout, and then change the value,
and the marker will go to that value. And you can use every one of these settings for
minimum marker, max, peak, valley, and even delta marker mode where you insert two markers
and then the difference between those is in your readout.
So, those are the basics of handling the data, plotting the data, putting it in lists. I
want to show you one more list, and here it is. It’s simply a list of the mix component
here, or the mix table, from Harmonic Balance. And you can see, these are index values, and
you’ll want to use those when you use equations. So, let’s write an equation, and the way
to do that is to insert the equation, just like that from the palette. And now, you can
see that it’s going to be entered here. This is our equation editor. And you can learn
all about the functions that are available to operate on data in ADS by going to “function
help.” When you click on this you’ll go to the help manuals, it’ll take you right
there, and you’ll see all of the functions.
Now, I’m going to write an equation here, and the equation will be for power of the
fundamental. So, I’m naming it whatever I want, equal to, and I’m going to use a
very simple function, dBm. And then, in parentheses I’m going to type-in the data that I want.
Or, I can select it from the list here. Vout, and if I insert it, it appears. And because
I want only the fundamental, I’m going to use square brackets and put that 1 from the
mix table, because that’s the one I want, in parentheses, and then complete the equation
like that. When I click “apply,” if there were any errors it would appear here. And
here is our equation. Now, it will turn red if it’s not valid.
And to put the equation in a list, you simply insert a new list, and then you select for
equations right here at the bottom, and then here is our equation, and add it. And that’s
how you use equations in ADS, and here is our power in the fundamental in dBm. And you
can also double-click and then go to “plot options,” and title the plot, “power of
the fundamental in dBm,” and click “okay.” And now, your list or your plot has a title.
At this point, we’ve covered a lot of detail about the Data Display window, how to work
with datasets and plot and list data, use markers, and even write a basic equation.
I’m going to show you how to use other data in ADS, and that will be the completion of
our video.
To use other data in ADS, the most common ways are shown here. First is the SNP component.
That’s located in the “data items” palette. Select the ones you want, depending upon the
number of ports. And then, you have to assign the file. This could be your measured S-parameter
results, or from some other file, simply an S-parameter file. The types are shown here.
They can be touchstone, another dataset or city file. Very easy to use these SNP components,
and you just connect them.
Now, the other way to do it is with a DAC. Now, the DAC is an arbitrary way to point
to a file. Let’s look at this DAC, which could be assigned for this device here, which
is just a BJT, and the model then is a file-based DAC that you see here. But, you have to set-up
the DAC. For the DAC, because it’s arbitrary, you can see there are so many different types
here. You simply select the one you want and make sure the file is available, and then
browse to it. So, those are two ways to get other data into a dataset from schematic,
either the DAC or the SNP.
This is the end of our video on Data Display and data in ADS. And if you take one of our
ADS courses, we go into detail and give you a lot of practice using data in the Data Display.