Title :
Magnetically tunable wideband magnetostatic-surface-wave filter using Ga-YIG film
Author_Institution :
Osaka Electro-Communication University, Department of Communication Engineering, Neyagawa, Japan
Abstract :
The characteristics of a magnetically tunable wideband filter utilising the property of a pass bandwidth of magnetostatic surface waves (MSSW) are given. The pass bandwidths of MSSW obtained experimentally through the Ga-YIG slab having the saturation magnetisation, 1100 Gs and the ordinary transducers consisting of wire antenna vary from 230 to 55 MHz for the operation frequency, 1 to 8 GHz, corresponding to the external static magnetic field. These results could fully be explained by the theory. Loaded Q values of this filter vary from 20 to 270 at the same frequency range as above.
Keywords :
gallium; garnets; magnetostatic wave devices; microwave filters; 1 GHz to 8 GHz; Ga-YIG film; S-band; X-band; external static magnetic field; loaded Q-values; magnetically tunable; saturation magnetisation; wideband magnetostatic-surface-wave filter; wire antenna;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840244
