Never studied this

[Jozef]

Hello

What makes an o'scope probe has higher bandwidth than another? or more generally what makes up a circuit bandwidth? materials? filters? and where does the higher cost for higher bandwidth go?

Thanks a bunch!

[Rasz]

i think dave did a clip on probe impedance and why  high bw probes are x10

[w2aew]

Hello

What makes an o'scope probe has higher bandwidth than another? or more generally what makes up a circuit bandwidth? materials? filters? and where does the higher cost for higher bandwidth go?

Thanks a bunch!

Oscilloscope probe BW is governed primarily by the parasitic capacitance at the probe tip.  You may want to review this video on 10x probes:



Dave did an excellent video recently regarding a tear-down of a 1x/10x probe that goes into even more detail, including the special lossy coax used:



Bandwidth in general is limited by the reactive components (either real or parasitic) in a circuit.  I did a video a while ago that analyzed the low-pass and high-pass frequency corners of a simple common emitter amplifier circuit:

[Jozef]

Good videos! Thanks!