Insertion phase and phase slope parameter of microwave junction circulators

An important quantity in the description of any junction circulator is its insertion phase over the frequency response of the specification. This paper provides some experimental data on this quantity for a degree-1 stripline device using an irregular hexagonal resonator for a number of different shape angles. In addition, a phase slope parameter is defined and related to the susceptance slope parameter of the gyrator circuit. The group delay of the junction is also deduced. A relationship between the phase angles of the reflection and transmission scattering parameters is separately deduced and verified.