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Hello,
I'm trying to design a class B amplifier in MWO using two CGH40010 transistors, I have used transformer to bias the gate voltage. I'm not sure hot to set the input power and how to do the matching network for Class B amplifier.
Here attached is my schematics, could anyone help to point...
Hey Manju,
Here attached is my predistorter and the power amplifier.
1. I also tried EVM measurement, but seems they don't provide measurement for percentage? I got quite wired EVM characteristics.
2. I tried to plot the predistorter's transfer function, but the measurement always seems to be a...
Hello, Manju
Thanks very much for the tip. I still have a couple questions:
1. I find the Tone source input, but I'm not sure how to set it to 2-tone?
2. In addition, the amplifier I'm using is an amplifier I designed myself, I'm not sure how to adjust the attenuator and phase to achieve the...
I'm trying to design a predistorter for Class AB amplifier and I found an example from MWO predistorter example. I tried to apply the simple structure to my class AB amplifier but the result is quite wired.
As can be seen from the pictures attached, the blue line is the output from the the last...
I have a schematics for load pull test, just wonder how do I run the load pull wizard?
I double clicked on the icon "Load Pull Wizard" and it shows the "measurement null", and "problem initiating the project",
Could anyone help please?
Hello, I'm designing matching network for a RF amplifier.
I'm using MWO nownad have got the load pull diagram, just wonder how do I design matching network from the load pull diagram please??
Thank you
Hello,
I'm trying to design an analogue predistorter. Just wonder if anyone knows any circuit design to generate IM3 product (the inverse of RF characteristic) by using Schottky Diode?
I read some journals and learnt that it is possbile to use the diode, but none of them gave detailed...
Anyone know the exact procedures to use a load-pull wizard in MWO?
When I add measurement to the graph, it always shows, the measurement is not compatible with the graph...
How to use the load-pull in Elements category and the load pull Wizard together?
Also, I 'm not sure if I can connect...
Hey GHOZU,
After adding a DC blocking capacitor, the drain current start to become extremely big, and does not match the IV characteristics any more, the voltage appearing at the drain is only 0.9 V..wonder why this is happening?
Is it normal for current to flow into port 2?
Thanks
Thanks for pointing out the problems, wonder what is the function of DC blocking capacitor?
The 12.25 ohm resistor was calculated from the IV charateristic to get a 10 volt Vds, when Vgs = -2 V, the current is already flat as Vds increases, wonder what is the difference running device at 20 V...
Hey guys,
I got this Smithchart from MWO, and according to my supervisor, S11 shouldn't be 0 and S21 S12 shouldn't be 1...but I can't find any problem with my schematics...when I carry out the annotation, the current from port 1 is 40 mA when it's supposed to be 0...no idea why it's that...
My project is to design a piecewise predistorter. I have some idea in mind, but think it's hard to connect the matlab system to the MWO data base...
Can anyone help?
Cheers
Hey, I'm designing a class AB amplifier and need to know the S parameter first, any one can help me to come up with a schematics that I can use to get proper Smith chart from MWO？
Thnaks！
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