How to add harmonic conent in time domain in ADS?

[triple_core]

Hi,

If I write ts(IDS.i) then I can see the current waveform in time domain.
But if I write ts(IDS.i[0])+ts(IDS.i[1])+ts(IDS.i[2])+ts(IDS.i[3])+..., I cannot obtain the correct waveform.
Anyone can help me how to write the expression correctly?

Thanks!

 

[kspalla]

check with what()
also correct ) to ] in your expression

 

[triple_core]

no, it's just typo here.
it seems that ADS trate the expression "ts(IDS.i[0])+ts(IDS.i[1])+ts(IDS.i[2])+ts(IDS.i[3])+..." as ts(constant magnitude), the result is always a perfect sinus waveform.

 

[kspalla]

Try with ts(IDS.i[0]+IDS.i[1]) etc.

 

[triple_core]

It doesn't work, neither. The result is a different perfect sinus waveform.
If you have a look of the 2 expressions in spectrum, Both does not contain any harmonic content.

 

[kspalla]

will you share the plots? circuit?
Sorry to say that unable to understand the problem.

 

[triple_core]

The left waveform is correct, but how can I write a expression by adding separate components to obtain the same waveform?

 

[kspalla]

For me it looks OK.
will you take individual plots for me?
I mean i[1],i[3],I[5] and i[7].

 

[triple_core]

The individual plot ts(IDS.i[1]),ts(IDS.i[2]),ts(IDS.i[3]),... look ok. Each has different magnitude and phase
The question is, by using "+", it cannot be added together in a correct manner.
thanks.

 

[pancho_hideboo]

f0=HB.freq[1]
T0=1/f0
dt=(T0/5)/20
tx=[0.0::dt::T0]
numtpts=int(T0/dt)+1

y0=real(IDS.i[0])
y1=real(IDS.i[1]*exp(j*2*pi*1*f0*tx))
y2=real(IDS.i[2]*exp(j*2*pi*2*f0*tx))
y3=real(IDS.i[3]*exp(j*2*pi*3*f0*tx))
y4=real(IDS.i[4]*exp(j*2*pi*4*f0*tx))
y5=real(IDS.i[5]*exp(j*2*pi*5*f0*tx))

y=y0+y1+y2+y3+y4+y5

plot this y.

But why don't you write following simply ?
y=ts(IDS.i[0::5], 0.0, T0, numtpts)

 

[triple_core]

Thanks, this really works.
The reason is that my output signal Y consists 2 carriers Y1 and Y2. I want to separate the 2 carrier from time domain.
Y=Y1+Y2
Y1=mix(Ids.i,{1,0})+mix(Ids.i,{2,0})+mix(Ids.i,{3,0})
Y2=mix(Ids.i,{0,1})+mix(Ids.i,{0,2})+mix(Ids.i,{0,3})

Do you think is there any easier method?

 

[pancho_hideboo]

Make custom AEL function for your purpose.
See https://www.edaboard.com/threads/163549/