The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 1991
Filed:
Jun. 12, 1989
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A magnetostatic wave device comprises a ferrimagnetic base material such as a thin film of YIG (yttrium iron garnet). The ferrimagnetic base material is formed on a supporting plate, for example, a GGG (gadolinium gallium garnet) substrate. On one principal surface of the thin ferrimagnetic base material, a first coupling antenna is formed. Furthermore, on one principal surface of the ferrimagnetic base material, second coupling antennas are formed on both sides of the first coupling antenna. In this magnetostatic wave device, the magnetostatic wave propagated from the first coupling antenna toward both sides of the first coupling antenna is received by the second coupling antennas on both sides of the first coupling antenna.