MICROWAVE FERRITE DEVICES (OCTAVE BANDWIDTH Y-JUNCTION CIRCULATORS)

As part of the theoretical study, the effects of introducing a nonzero linewidth in the equations for micro eff are considered for the first time. Some interesting results are reported which are in agreement with earlier empirical data. A substantial increase in bandwidth was achieved in the 400 - 800 Mc band through the use of reduced strip width and puck heights. Octave bandwidths were achieved in the 600 0 1200 Mc, 1.0 - 2.0 Gc, and 2.0 - 4.0 Gc circulators through the use of improved microwave parameters and matching techniques. The circulators for the remaining two bands, 1.5 - 3.0 Gc and 4.0 8. 0 Gc, are currently being modified to reflect similar changes.