I'd appreciate a lot if anyone can help me with these issues! I mean, starting from the source reflection coefficient, and moving to the generator, the first element would be the transmission line, that is in series, so why change the impedance to admittance? Wouldn't be more logic to move from the plotted impedance to the 50ohm impedance circle, and after that, change from impedance to admittance, and then cancel the imaginary part with the shunt stub?Īppart from that, I can't understand clearly that, having a generator (source) and a load (Z0), when moving from the transistor towards the generator, the movement sense in the smith chart is towards load. So that the matching circuit should be obtained with the following criteria in the Smith Chart:Īnyway, what I can't understand is this criteria.
The circuit to be matched is the following one:Īs I don't have the impedances in the transistor, but the reflection coefficients, Pozar suggests to see the circuit as follows: I'm reading Pozar's Microwave Engineering, more specifically stub adaptation in the Smith Chart. I'd like to clarify some concepts about microwaves that I still can't understand it at all.
