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Impedance matching is a process of making one impedance equal to another another.

3 votes

Why is a high-Q circuit difficult to match?

As you suspect, the problem is the definition of Q. For example, a band pass filter can have a very high Q, where Q = F0/BW, but if its input impedance is reasonable, it can be quite easy to match t …
user5108_Dan's user avatar
4 votes
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When is impedance matching necessary? Isn't it much less efficient on all other aspects?

It took me a while, but I think I finally understand the nature of your question. You seem not to understand that you cannot measure a transmission line's Z0 with an Ohm meter. A transmission line's …
user5108_Dan's user avatar