Fig. 6: Integrated device.
From: Frequency tunable magnetostatic wave filters with zero static power magnetic biasing circuitry

a Measured magnetic flux density under different capacitor charging voltages. b Insertion loss vs. frequency comparison for the magnetostatic wave filters (MSWF) measured under an external magnetic field generated by an electromagnet and the magnetic biasing circuit. c MSWF response measured with the magnetic field supplied by an electromagnet on a magnetic probe station. d MSWF response measured with the magnetic field supplied by the zero DC power tunable magnetic biasing circuit. e Zoomed in \({{{{{{\rm{S}}}}}}}_{12}\) frequency response of MSWF measured with magnetic field supplied by the tunable magnetic biasing circuit.