The Twin-Ferrite-Toroid Circular Waveguide Phaser

The TE/sub 01/ mode in the circular waveguide loaded by two concentric ferrite toroids, magnetized circumferentially in opposite directions, is investigated. A method is proposed to switch the remanent magnetization of both toroids simultaneously by means of a single biasing wire. The dps (differential phase shift) shows substantial increase over that of the twin-ferrite slab phaser.