What is a YIG? YIG stands for Yttrium Iron Garnet and it is a crystal compound that resonates at microwave frequencies when in the presence of a magnetic field. YIGs are used to create resonant circuits in microwave oscillators and filters. What differentiates them from other types of microwave resonators is that they can resonate over very wide frequency ranges. Therefore, they are ideal for very broadband applications. They also are very stable having very low phase noise.
Giga-tronics uses YIG technology to create high performance microwave oscillators and filters.