Magnetostrictive elastic surface wave structure
First Claim
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1. A magnetostrictive elastic surface wave structure comprising a non-magnetic substrate and at least one electromechanical transducer arranged on a free major face of said non-magnetic substrate for converting electrical energy into said elastic surface wave and vice-versa;
- said electromechanical transducer comprising;
a deposit of magnetostrictive material overlaying a portion of said major face, electrical conductive means located above said deposit for creating therein an alternating magnetic field in response to said electrical energy and inductor means creating in said deposit a d.c. bias magnetic field;
said elastic surface wave being launched by at least one radiating element pertaining to said deposit;
the pattern of said element being in the form of one wavefront of said elastic surface wave and delimited by the geometrical configuration of said deposit.
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Abstract
The invention relates to elastic surface-wave structures. The elastic surface wave structure in accordance with the invention comprises a non magnetic substrate and a surface wave transducer containing at least one emissive zone situated in a deposited layer of magnetostrictive material subjected to an alternating magnetic field and to a magnetic polarization field.
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Citations
20 Claims
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1. A magnetostrictive elastic surface wave structure comprising a non-magnetic substrate and at least one electromechanical transducer arranged on a free major face of said non-magnetic substrate for converting electrical energy into said elastic surface wave and vice-versa;
- said electromechanical transducer comprising;
a deposit of magnetostrictive material overlaying a portion of said major face, electrical conductive means located above said deposit for creating therein an alternating magnetic field in response to said electrical energy and inductor means creating in said deposit a d.c. bias magnetic field;
said elastic surface wave being launched by at least one radiating element pertaining to said deposit;
the pattern of said element being in the form of one wavefront of said elastic surface wave and delimited by the geometrical configuration of said deposit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- said electromechanical transducer comprising;
Specification