Скачать или смотреть Inside a YIG Oscillator: Stunning Close-Ups of Microwave Wizardry

This piece of microwave magic is a work of art. What you're looking at is a YIG oscillator covering 3.8 to 6.8 GHz, built around a tiny sphere of Yttrium Iron Garnet (YIG).

YIG is a ferrimagnetic single crystal whose electron spins precess with remarkable precision when exposed to a magnetic field. By carefully controlling that field, the oscillation frequency can be tuned with exceptional accuracy and stability, resulting in an oscillator that is extremely low noise. Pretty cool, right?

Note: This is a re-edit of an earlier video, now featuring multiple, clearer images of the YIG sphere and the complete oscillator circuit.

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