Wideband Magnetoelastic Frequency-Selective Limiter for VHF

摘要

In the report, the results of one year's progress are summarized for the construction of a frequency-selective Limiter that uses parametric generation of subharmonic magnetoelastic modes in ferrimagnetic materials. The philosophy of broadband frequency-selective limiter circuit design is presented. The importance of pumping direction, material selection, and orientation is discussed. The material used in the final model is YIG:Ga, a highly doped garnet. The final orientation was made to provide a low internal saturation magnetic field to provide a low limiting threshold. (Author)