Design and fabrication of microwave circulators based on ferromagnetic nanowires

Microwave circulators based on magnetic nanowires have attracted so much attention due to smaller sizes, fast manufacturing process, low cost and ability to adjust absorption frequency in a wide range in zero fields. Microwave circulators based on magnetic nanowires are designed using the scattering matrix method and are built using chemical electrodeposition in anode aluminum oxide membrane. After nanowires synthesis, a microstrip transmission line is prepared using the sputtering coating method and the final test of the device is done by vector network analyzer. Our results show high isolation of −20 dB with good agreement between simulation and measured data.