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Thanks. According to the application note, , Yopt is calculated as follows:
In this case, Gopt and Bopt depend on Gc, Gu, Rn, and Bc.
Yc = Gc + jBc also depends on input referred noise sources, Vn and In as shown in that page.
Vn and In, in turn, depend on Ls and Lg.
Therefore, Yopt will...
I need help with this.
Round robin: a special case as two processed one used up it time quantum and the other arrives at the same time.
For example, we has the following processes:
Process P1:
+ Arrival time: 0
+ Burst time: 7
Process P2:
+ Arrival time: 5
+ Burst time: 7
Assuming that...
It would be great if you could help me with this. I write this post based on the book "The Design of CMOS Radio-Frequency Integrated Circuits" by Thomas H. Lee.
Here is a summary about noise factor of a two-port network.
A noisy two-port network is represented as follows.
And here is the...
Because when we add Ls into the circuit, the circuit is no longer a cascode but a cascode degradation. Therefore, its gain also changes. The added Ls doesn't change noise source because it is losses. As gain changes, the input-referred noise (current and voltage sources) also changes => F...
Hello,
Ls is lossless; it doesn't contribute noise source to the circuit but it changes the circuit topology and therefore changes voltage gain and finally changes Fmin. That is my thought.
By the way, is there a way to find Fmin of a circuit without knowing F? As BigBoss said Fmin doesn't...
Thanks, I know the difference between F and Fmin. What confused me is why Fmin is independent on Ls. I tried a lot to calculate Fmin as in the file but didn't get that result. In my calculation
Fmin depends on Ls. Fmin increases if Ls increases.
At the APPENDIX they gave a proof for that...
I am reading this paper and in formula (11 ) page 3, it shows that minimum noise factor Fmin isn't affected by Ls. Please look at this:
**broken link removed**
Yes, the load resistance that I calculated is the one we get after impedance transformation network.
For example, with 50 ohms load we can make it up to 10 Gohms with impedance transfomation network.
I don't know why it is wrong?
Assuming that the output voltage swings between 0 and 2Vdd and it is a sinusoidal.
=> P = Vrms^2/Rload = (Vdd/sqrt(2))^2/Rload = Vdd^2/(2Rload).
Yes, I was mistaken.
For design such a low output power, is there a procedure to do it? I tried to do it as the way to design a normal power amplifier but because Pout is very low and therefore Rload from the formula Pout = Vdd^2/(2RLoad) is very very large about tens giga ohms.
What type of power amplifier good for amplification signal with very low input power about -120dBm and high gain about 30dB?
It is used in GNSS receiver.
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