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[SOLVED] How via stub acts like a resonant circuit

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hioyo

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I was learning about via and in many places, I can see that via stub acts like a resonant circuit, quarter-wave stub frequency etc.

But nowhere I can see how a via stub acts like a resonant circuit.

Can some please tell the physics behind it
 

Solution
D
Every wire is a transmission line and/or antenna depending
on its surroundings (like whether it's parallel, orthogonal or
remote from the ground plane). Ones you might ignore at
100kHz may not be trivial at 5GHz, so where you get your
tutorials (and how stale, or where focused) probably factors
into whether they have "constructive or destructive
interference" in your cranium.
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If you've got inductance and capacitance, you've got a resonant circuit. Every PCB element has both of those properties.
 

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Every wire is a transmission line and/or antenna depending
on its surroundings (like whether it's parallel, orthogonal or
remote from the ground plane). Ones you might ignore at
100kHz may not be trivial at 5GHz, so where you get your
tutorials (and how stale, or where focused) probably factors
into whether they have "constructive or destructive
interference" in your cranium.
 

    H

    hioyo

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Solution
hioyo said:
I was learning about via and in many places, I can see that via stub acts like a resonant circuit, quarter-wave stub frequency etc.

But nowhere I can see how a via stub acts like a resonant circuit.

Can some please tell the physics behind it
Click to expand...
You need to read about this Subject in google, and ask when you get any doubt on particular section. These questions are very broad questions. Can't explained everything in posts.
 

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    hioyo

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