Switching reliability of tunable ferroelectric resonators and filters

Ferroelectric bulk acoustic wave resonators and filters have recently been demonstrated for applications such as switchable and tunable RF circuits. By applying a dc bias, ferroelectric resonators switch on and by adjusting the voltage level, the resonance frequencies can be tuned. Here, the switching reliability of intrinsically switchable barium strontium titanate based resonators and filters are investigated for the first time. Results show the devices can be switched on and off more than one billion cycles using 10 V pulses without any performance degradation.