aaron_do
|
Hi,
first of all, the resistors Rs and RL should be fixed (50-ohm for example). R1 and R2 should be chosen for whatever bias point you want (Class A, B, C...). L1C1 form a resonator with ω02=1/L1C1. Same goes for L2C2. You can determine L3 using the smith chart, or approximately by finding the total input gate capacitance, and then resonating it with L3. Lastly L5C4 transform RL to a lower impedance. You first need to determine what impedance that is by the amount of power you need (call it RLL). Remember that the maximum power the circuit can deliver is approximately VDD2/2RLL. You can then use the smith chart. If you don't like the smith chart, L5 can be calculated by Q=RL/ωL5 and RLL=ωL5/Q (those are approximations). Also, ω02=1/L5C4. That should get you started, but you probably need to fine tune. Also, any node which you want to determine whether it is resonating or not, simple inject 1A AC current into it and check the AC voltage. Remember to disable other AC sources first though...
regards, Aaron
|