Abstract

Single phase cobalt ferrite (CFO) thin film is grown on quartz substrate by ultrasonic assisted chemical vapor deposition technique and used for a high frequency magnetically tunable bandpass filter. CFO thin film is coupled to a copper strip resonator type bandpass filter in a flip-chip configuration. The coupled bandpass filter shows the tunability of 3.5 % in the GHz range for the variation of external bias magnetic field from 0 to 98 Oe.

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