Abstract

Control of the digital phase shifters can be achieved with help of a d.c. biasing magnetic field applied to a ferrite inside a rectangular waveguide. The garnet ferrites are used to manufacture tunable bandpass filters where the resonant frequency is tuned in order to obtain different vales of the phase shifting over the frequency band of interest. The Trans-Tech microwave garnets (calcium vanadium substituted YIG) were studied comparatively, in the planar phase shifter configuration, by simulation methods (HFFS Ansoft). Results indicate that the permeability evolution of the ferrite slab versus frequency can be shifted with circa 20 %, due to the dependence of the ferrimagnetic resonance on the biasing field (0–2 kOe) and also the insertion loss. The phase shifting is also a function of frequency, over the considered frequency band for tuning (4–12 GHz for the Trans-Tech garnets).

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.