Accession Number : ADP000935

Title :   Magnetostatic Wave Resonators,

Corporate Author : THOMSON-CSF ORSAY (FRANCE) RESEARCH CENTER

Personal Author(s) : Castera,Jean Paul ; Hartemann,Pierre

Report Date : JAN 1983

Pagination or Media Count : 11

Abstract : The purpose of this paper is an overview of recent advances about tunable two-port microwave resonators using the propagation of magnetostatic waves. These waves propagate in yttrium iron garnet films grown by liquid phase epitacy on gadolinium gallium garnet substrates. 8 dB insertion loss magnetostatic surface wave resonators have been achieved with a loaded Q close to 450 and an out of band rejection of about 10 dB. By decoupling the resonator from the transducers, Q values greater than 800 can be obtained with 15 dB insertion loss and a rejection of the off-resonance frequencies greater than 10 dB. Volume wave resonators have a higher Q value of about 1200 and 16 dB insertion loss for rejection equal to 4 dB. Some experimental results on metal dot array cavity are presented and limitations related to power saturation, frequency versus temperature variations and off-resonance transmission are discussed. (Author)

Descriptors :   *Magnetostatics, *Resonators, *Microwave equipment, Wave propagation, Yttrium iron garnet, Films, Substrates, Gadolinium compounds, Gallium compounds, Garnet

Distribution Statement : APPROVED FOR PUBLIC RELEASE