Possibirity of drastic miniaturization of microstrip Y-isolator [Possibirity read Possibility]

Recently miniaturization of electronic parts is strongly required for miniaturization and multi-hnctionarization of mobile communication devices. The current isolator products controlling the propagation direction of electromagnetic wave using gyro-magnetic effect of a ferrite, have minimum size of 4 mm x 4 mm x 1.6 mm which is larger than the other electronic parts. Thus the miniaturization of the isolators is urgently demanded.