Applications of ferrites at 3 cm wavelength

A consideration of the desirable properties in ferrites for microwave purposes is followed by an examination of some ferrites normally used at low frequencies to assess their suitability at 3cm wavelength. The transverse-field and Faraday-rotation effects are then discussed, and work resulting in the design of practical medium-power isolators and circulators for 3¿cm wavelength utilizing standard nickel¿zinc ferrites is described. The use of ferrite phase-shifting elements as tuning devices for low-power klystrons is considered and some experimental results are reported. Finally, consideration is given to the duplexing problem and to its possible solution with the aid of ferrite devices.