Design Note on an L-Band Strip-Line Circulator (Correspondence)

The technique of using magnetized yttrium-iron-garnet slabs in dielectrically-loaded strip transmission Iine as the reciprocal elements in a UHF and low-microwave frequency, 4-port circulator has been demonstrated most effectively by Arams, et al. This communication reports the results of an independent and concurrent development program at our laboratory which led to a similar L-band circulator using a some what different configuration.