Title :
Microwave tunable filter using ultra-thin magnetic film
Author_Institution :
Osaka Electro-Communication University, Neyagawa, Osaka, Japan
fDate :
11/1/1982 12:00:00 AM
Abstract :
The filter characteristics of magnetostatic surface wave propagating in a structure consisting of the strip-line antenna and a relatively thin YIG film are described. The performance theory of filter proposed here utilizes a peculiarity such as it is to be explained only in the passband characteristics of magnetostatic surface wave, when the external magnetic field and saturation magnetization of YIG film are given in the system. It was found that the loaded Q-value of filter on an ordinary magnetostatic surface wave transmission system composed of a stripline antenna with 200 μm width and a YIG film with 0.79 μm thick is about 1620 at s-band frequency.
Keywords :
Magnetostatic surface-wave materials/devices; Stripline filters; Tunable filters; YIG films/devices; Antennas and propagation; Filtering theory; Magnetic films; Magnetic separation; Magnetostatic waves; Microwave filters; Microwave propagation; Passband; Saturation magnetization; Surface waves;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1982.1062037
