Patent ID: 7242263
Filing Date: 2007-07-10
Classification: H01P

Abstract:
1. A ferrite waveguide circulator, comprising: a waveguide structure having an internal cavity, the waveguide structure including a plurality of ports extending from the internal cavity, the ports being free from any steps in height or width; and a ferrite element disposed in the internal cavity and having a plurality of legs matching the number of ports, the legs terminating without any quarter wavelength dielectric transformers extending therefrom, the ferrite element being comprised of a ferrite material having a relatively high saturation magnetization value such that waveguide port steps and dielectric transformers can be omitted while still providing good impedance matching, wherein a broadband impedance match is obtained of greater than 5% of frequency bandwidth at a 21 dB isolation point and/or greater than 20% frequency bandwidth at a 14 dB isolation point.