Frequency Selective Tunable Microwave Mixers using Magnetostatic Waves

Tunable microwave mixers using magnetostatic spin wave (MSW) propagating in nonstationary magnetised thin yttrium-iron-garnet (YIG) films have been developed and investigated. The mixers are tuned in the frequency range 3-10 GHz by changing of external magnetic field. The first mixer provided a frequency shift of up to 300 MHz with minimal conversion loss about of - 15 dB. The second one provided a frequency shift of 20-150 MHz and had minimal conversion loss of up to -20 dB. Both mixers are resonant in nature, therefore they provide a frequency filtration of the signals as well.