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This is my schematic. Everyone knows the function of the predistorter which is just like this figure.
Now , my question is if the s11 of amp is not very (ex -3dBm).
Is the result still good as this figure?
thanks for help.
Asssume, my predistorter can improve the imd of amp about 20dBm
Does the improvement of the predistorter become not very well, if s11 of Amp is not lower than -10dB ??
hello ,
As the title, I make a predistorter by using diode and combine with a
AMP to improve the IMD of the AMP.
However the s11 of the AMP is not very well.
Is the IMD of the AMP still improve well when S11 of the AMP is not very well?
Hello, everyone
Recently, I need to use this PA to experiment but I can't find its model for simulation.
does anyone see this Power amplifier model before?
Re: power depend pin diode
Yes,
the situation that you talk is exactly what i want.
how a pin diode can sensitive to rf power ? is that possble?
I need a pin diode that R is easier changed by rf power.
what kind pin diode or component can achieve my need?
epi pin diode model
I need this kind pin diode to do experiment
does anyone use this spice model or ads model before??
https://pdf1.alldatasheet.com/datasheet-pdf/view/112856/HP/HMPP-3895-BLK.html
biff44 thx a lot you give a good idea
I have some question about the antiparallel shottky diodes.
As we know , this circuit will be some inertion loss maybe S21 = -3dB
1.does this circuit 's insertion loss will be the same magnitude
at each frequency in 500MHz~3GHz ??
2.does this circuit 's...
I am really sorry , I am not good in english.
I need a component. This component is wideband. For example, its s21 is flat in 500mhz ~ 3000mhz.
and It's nonlinearity(intercept point) is same in 500mhz~3000mhz too
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thanks for help biff44
I need some nonlinearity component which can generate nonlinearty characterist
at each frequency (I mean broadband). That is why I choice pin diode but I didn't
notice, it is high linearity.
So what kind nonlinearity component can achieve my condition (broadband and...
hello everyone
I use some pin diode to do my experiment.
now I have some problem.
The linearity of pin diode always is good.
but now I need a very poor linearity pin diode to do my experiment .
so how can i make a poor linearity pin diode by using...
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