Microwave integrated circulators
- 1 January 1967
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
This paper presents results of several integrated circulators built in microstrip transmission line. The circulators are of the symmetric junction variety and utilize polycrystalline magnesium-manganese ferrites. Three-port circulators and four-port circulators have been built in x-band. The four-port structure is essentially two three-port circulators fabricated end-to-end on a common substrate. Some of the circulators are fabricated by depositing the metallic microstrip circuit directly onto a ferrite substrate. Some are fabricated by pressing ferrite pucks into an alumina substrate on which the microstrip circuitry is deposited. Small permanent magnets are generally used for bias.Keywords
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