Dual H- and E-field tunable multiferroic bandpass filters with yttrium iron garnet film

Summary form only given, as follows. A new type of dual magnetically and electrically tunable bandpass filter with a YIG film and with a YIG/PZN-PT multiferroic heterostructure have been designed, fabricated and characterized. The resonant frequency of the BPF can be tuned via a bias magnetic field, and a large tunability of the operation frequency of 190 ∼ 840 MHz with relatively small bias fields of 50 ∼ 250 Oe. A clear E-field induced frequency shift of 200 MHz or ∼10% was demonstrated on the multiferroics based BPF.