State of the art millimeter and sub-millimeter wave ferrite components and devices

The nearest decade development of radio-electronics will be to a great extent related with the mastering of millimeter and submillimeter wave band. This process is considerably stimulated by a great success in development of electronic components for millimeter and sub-millimeter wave bands. So, substantial progress has been achieved in the field of development and production of key components - sufficiently reliable sources of oscillation in the stated bands. Development and putting ferrite devices and apparatus into industry production is one of the key problems of millimeter and sub-millimeter wave band mastering. The ferrite devices are known to be the main type of non-reciprocal passive devices in microwave range. Rather substantial role belongs to ferrite devices in the field of propagation conditions control for the waves in this range. In the present paper the authors consider state-of-art, achieved level of development and the nearest perspectives of creation of ferrite devices for the stated range. The consideration is carried out on the basis of example of typical ferrite devices: non-reciprocal (isolators and circulators) as well as controlled ones (filters and phase-shifters). Just these groups of devices define the state-of-art and the level of development of ferrite device engineering. State of the art millimeter and sub-millimeter wave ferrite components and devices B M Lebed, V D Voronkov R&D Institute Domen, Russia.