A Symmetrical, Distributed Constant Circulator

Ferrite circulators that have been built in the past fall into two categories: non-symmetrical, distributed-parameter type, such as the Faraday rotation and differential phase shift circulators; and the symmetrical, abrupt discontinuity type, such as the "Wye" junction circulator. This paper describes a third type, which has both the properties of symmetry and a distributed interaction region. As such, it is believed that this type of circulator has potential for quite large bandwidths.