QUASI-OPTICAL FERRITE REFLECTION CIRCULATOR

A quasi-optical Faraday rotation circulator utilizing a ferrite for mi crowave or millimeter-wave radiation is investigated experimentally an d analyzed theoretically by a matrix formalism. Both reflection and tr ansmission configurations at oblique incidence are examined. Numerical results in the band centered at 35 GHz are evaluated. Theory and expe riment are compared over a 10-20% band. Notwithstanding the complexiti es resulting from oblique incidence, we find bandwidth, low loss, and isolation comparable to those of the transmission-type version now in system deployment. The principal advantage of the reflection configura tion lies in the greater heat dissipation capability.