Abstract :
An integratable realization of a circulator using three differential transconductances is given. Minimal sensitivity to component variations is assured by the fact that there are only three independent parameters whose values depend on resistors instead of the six or more required by other realizations. Good performance has been obtained from 0 Hz to over 1 MHz at 2 kΩ impedance level (with the forward-to-backward transmission ratio better than 50 dB).
