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You may benefit by a system analysis. If you get into compression, amplifier will give a lower (compressed) gain. This is besides oscillation that, to me, looks still present.
For the system analysis you may use Mystic.
It is a design tool that helps you to setup and to dimension any chain made...
Hi rfuser,
have you read my first post?
What I read in the row in your project file:
.param freq1=1.91e9 freq2=1.91e9 power=1e-3 Vdd=2.3
does it means you are not sweeping frequency?
Have a trial and let us know ...
Hope this helps,
Max
Hi,
more info are required to answer you.
Anyway a simple guess could be that for some reason you are not performing a frequency sweep analysis ...
Max
Re: What is RTOS ?
Real-Time Operating System is a multitasking operating system intended for real-time applications.
It is used on every device/system needing real time operations that means operations based not only on correctness but also upon the time (clock cycles) in which they are performed.
Re: Low Power RF design
Hi,
you may want to try Microwave System Calculator.
To build a line up can't be more easier!
It has been designed just to be used for problems similar to your.
Oh ... yes ... it's free!
Regards,
Max
http://mwsc.webng.com
Why use a PLL may require multiple answer ...
The main reason I can give you is:
-As high is the freq you want, the less is the accuracy you get and the higher the noise on that frequency ...
-So you can have 2 clock, 1 very good at low freq and 1 not good at your high freq
-You can prescale the...
Re: Does S22 of power amplifier need to be matched to 50 ohm
I try again.
At low freq. ... let's say below 2 GHz matching input and output could be reasonable (using buffer!!!) even if I don't think you can expect more than 15 dB unless you want to design an oscillator :D .
At higher freq...
pa s22
In principle matching is always good but I find really difficult you'll be able to do that in a power amplifier.
When designing for high output power mismatch must be tolerated mainly, but not only, to avoid oscillation.
Max
Every oscillation get the whole system oscillating ... this is from stability theory.
Regarding the bandwidth a simple explanation could be just look at the different loops as they would be simple filters.
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