Abstract :
A new nonreciprocal device using a resonance detuning principle is described and experimental results are presented. The experimental device worked at 1.2 GHz, and at midband showed 1 dB insertion loss, 28 dB directivity and 30 dB isolation, with a 30 MHz bandwidth between the 20 dB isolation points. The device can be used as a nonreciprocal narrow bandpass filter or a four-port circulator.
