Title :
A magnetostatic forward volume wave directional coupler with a guiding slot structure
Author :
Kaneta, M. ; Yashiro, K. ; Ohkawa, S.
Author_Institution :
Dept. of Electron. Eng., Chiba Univ., Japan
Abstract :
A magnetostatic forward volume wave (MSFVW) directional coupler with a slotline structure is discussed. The structure consists of a slotted metallic layer deposited on a YIG film. The propagation of MSFVWs along the structure has been confirmed experimentally except around the lower limit of the MSFVW band. In addition, a description is given of a directional coupler with adjacent guiding slots fabricated on an epitaxial yttrium iron garnet (YIG) grown on a gadolinium gallium garnet (GGG) substate. A nearly 100% power transfer from one slotline to the other has been demonstrated. The directivity was measured to be above 20 dB except around the lower frequency limit.<>
Keywords :
directional couplers; magnetostatic wave devices; solid-state microwave devices; YFe5O12-GdGa5O12; YIG film; YIG-GdGG; coplanar type; directional coupler; garnet substrate; guiding slot structure; magnetostatic forward volume wave; microwave devices; slotline structure; slotted metallic layer; Directional couplers; Electromagnetic waveguides; Garnets; Lithography; Magnetic anisotropy; Magnetostatic waves; Perpendicular magnetic anisotropy; Saturation magnetization; Substrates; Testing;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22174
