Is resonance there when conjugate matching happens

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rf1008

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Hello, i have a small question on resonance.

When tha conjugate matching is achieved(Rs=RL,jXs=-jXL),is there resonance happens on the same frequency? I think so because jXs=-jXL and then there is no reactance in the circuit.
 

It looks similar but no: conjugate matching means a maximum power transmission is possible from a source to a load. At resonance, reactances are equal but the power stays in a circuit.
 

resonance is a...poorly defined term. Normally "resonance" implies "stored energy", like in a flywheel effect. A matching network on an amplifier..has no energy storage portion...so it would be a poor choice of word to say it "resonated" where there happened to be a conjugate match.

Also, resonance typically happens at ONE frequency. Like a bandpass filter passing 1 GHz signals, probably has resonators tuned to approximately 1 Ghz. In an amplifier match, even though u might have a conjugate match from 1 to 2 GHz, there is no "one resonant frequency".

So....NO!
 

jiripolivka said:
It looks similar but no: conjugate matching means a maximum power transmission is possible from a source to a load. At resonance, reactances are equal but the power stays in a circuit.
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A lot of people would define any peak or notch in power transfer as resonance. It's not really a well defined term in complex circuits. I know some people who think about it in terms of eigenvalues and such:-?
 

Since this conjugate matching is valid only and only at one single frequency-so that's true-, one might say "yes"..
 

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