Fig. 4: Filter tuning response and experimental setup.

a Measured 4-pole MSW bandpass filter frequency response at different out-of-plane magnetic biases from 3205 Oe to 5303 Oe. b Experimental setup showing the fabricated filter chip resting on the pole of an electromagnet, two GS probes connected to one device under test, and an optical microscope used for probe landing and device alignment.