Novel Electrostatically Tunable Frequency Selective Surface with PZT/FeGaB Films

Strong magnetoelectric (ME) coupling can be realized in multiferroic heterostructures, which have led to a variety of devices. Here, a novel electrostatically tunable frequency selective surface (FSS) with PZT/FeGaB films is reported, which shows a high resonant frequency tunability. A high X to Ku band resonant frequency tunability of f = 2.75 GHz or f/f= 24% was demonstrated in the FSS with PZT/FeGaB films, which was 10 times of the similar FSS structure with only FeGaB film. This electrostatically tunable FSS with strong ME coupling will provide great opportunities for more energy efficient, less noisy, compact and light-weight microwave devices with frequency tunabilities.