- #1
likephysics
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Say I have a 25MHz Crystal that's connected to a Microprocessor/Microcontroller or spread spectrum clock generator. Does the crystal emit Electromagnetic radiation at its fundamental frequency or it's harmonic frequencies?
I keep hearing - " I see a peak at ~50MHz, it must be the 2nd harmonic of the crystal". I just find that hard to believe. Crystal has a sine wave output, so no harmonics unlike a square wave.
Any EMC experts care to add your 2 cents.
I keep hearing - " I see a peak at ~50MHz, it must be the 2nd harmonic of the crystal". I just find that hard to believe. Crystal has a sine wave output, so no harmonics unlike a square wave.
Any EMC experts care to add your 2 cents.