Suppose I've settled on using a simple two-element matching network when matching the input to the base and again on the output to collector of a BJT amplifier for use at microwave frequencies (> 800 MHz), match to 50 ohms on input and output, for wide bandwidth performance (well, as wide as possible given an L-section).
How do I pick whether I should use a shunt-L series-C or series-L shunt-C matching network?
It seems like whether the shunt element is closer to or further from the impedance to be matched is dependent upon the impedance to be matched, but I still have the freedom to pick if it should be shunt-L series-C or the converse. What generally goes into this choice?
It seems as if the Q is not influenced between the choice of series-C/shunt-L vs series-L/shunt-C, as the Q for both are identical.
I am, additionally, aware that one L-section will have a low-pass characteristic, and the other a high-pass characteristic. This would seem less important to me as the device will only match over a narrow range of frequencies given that the matching network is only a single section. I’m more curious about things that don’t involve how matched the thing looks. If I have a certain input impedance, matching network, and load impedance, I know how to write down and plot the power delivered to the load. It’s just that the matching network will surely have impacts on harmonic generation, stability, bias network design, and noise. I’m more curious about these things.
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