Experiments on New Millimeter-Wave Junction Circulators

摘要

Progress is reported in the development of millimeter-wave microstrip and waveguide junction circulators for the band near 31 GHz. By exploiting the properties of high-anisotropy magnetic materials, external magnet requirements are eliminated. Favorable isolation and insertion loss performance, with good temperature stability, are achieved. Design trade-offs involve device structure and magnetic material parameters. Reprints. (RH)