Magnetically tunable millimetre-wave filter with single-crystal barium ferrite
- 1 January 1979
- journal article
- Published by Institution of Engineering and Technology (IET) in IEE Journal on Microwaves, Optics and Acoustics
- Vol. 3 (6) , 253-254
- https://doi.org/10.1049/ij-moa.1979.0053
Abstract
Barium-ferrite (BaFe12O19) single crystals with a high anisotropy field and low millimetre-wave (mm-wave) losses have been grown from high-temperature solutions. The high internal field (17/4π MA/m) considerably reduces the external magnetic field required for spin resonance at mm-wave frequencies. Due to the progress in single-crystal barium-ferrite technology, it is possible to extend the tuning range of filters up to 90 GHz. A compact tunable filter, similar to y.i.g.-filters, has been built and the first results are reported.Keywords
This publication has 1 reference indexed in Scilit:
- The accurate measurement of permittivity by means of an open resonatorProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1971