Title :
Diffraction of millimetre waves in polycrystalline ferrite partially magnetised by standing ultrasonic wave
Author :
Brugidou, V. ; Rolland, P.A.
Author_Institution :
Dept. Hyperfrequences et Semicond., CNRS, Villeneuve D´´Ascq, France
fDate :
4/15/1999 12:00:00 AM
Abstract :
The authors predict and calculate the diffraction of millimetre waves by an elastic wave in partially magnetised magnetoelastic ferrites. This diffraction at 94 GHz in a nickel-zinc ceramic plate with a standing elastic wave is experimentally demonstrated. Based on this effect, acoustic deflectors can now be developed for beam steering antennas at millimetre frequencies
Keywords :
ceramics; elastic waves; electromagnetic wave diffraction; ferrites; magnetic millimetre wave devices; magnetoacoustic effects; magnetoelastic waves; nickel compounds; ultrasonic effects; zinc compounds; 94 GHz; NiZnFe2O4; acoustic deflector; beam steering antenna; elastic wave; millimetre wave diffraction; nickel-zinc ceramic plate; partially magnetised magnetoelastic polycrystalline ferrite; standing ultrasonic wave;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990436
