simbaliya
Member level 4
Ok, refer to attached schematic I drew, I do not quite understand why the design is like this, I have below doubts:
1. are the caps and inductors for the purpose of impedance matching? If yes, is it still necessary to design the 50 ohm impedance trace at indicated location?
2. What is the difference of LC impedance matching and 50 ohm trace design impedance matching?
3. is the impedance matching for signal integrity or max power efficiency, or for both?
4. The BAW filter will change electrical signal to acoustic signal, what is the purpose of such conversion? And how to realize narrow bandpass fitering with BAW?
5. If all the traces are very short, e.g less then 1cm, still need impedance matching or not?
Sorry I asked a lot of questions, but I am very curious about RF knowledge.