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Electronic component functioning with reflected acoustic waves

Assignee: TDK Electronics AG
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Filing: 1983-08-04
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Granted: 1985-05-28
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Expires: 2003-08-04
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Abstract

Abstract A component has a reflector structure with fingers which are weighted by division into sub-fingers in a longitudinal direction. These sub-fingers are offset relative to one another in a wave propagation direction by a dimension of the weighting.

Inventors

  • 👤 Gerd Riha

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 11:51
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/64; H03H9/6423; H03H9/643

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 100 words
An electronic component functioning with reflected acoustic waves on a substrate and which has a reflector structure, input means for transmitting a primary wave, and output means for receiving a reflected wave, and wherein the reflector structure has finger weighting by means of displacing a position of strip-like fingers to be weighted, wherein the improvement comprises: the strip-like fingers to be weighted are functionally divided at least once in their longitudinal direction so as to create sub-fingers; and the sub-fingers are offset relative to one another in a primary wave propagation direction by a dimension corresponding to a prescribed weighting.
Claim 2
Dependent Claim 100 words
An electronic component functioning with reflected acoustic waves on a substrate and which has a reflector structure, input means for transmitting a primary wave, and output means for receiving a reflected wave, and wherein the reflector structure has finger weighting by means of displacing a position of strip-like fingers to be weighted, wherein the improvement comprises: the strip-like fingers to be weighted are functionally divided at least once in their longitudinal direction so as to create sub-fingers; and the sub-fingers are offset relative to one another in a primary wave propagation direction by a dimension corresponding to a prescribed weighting.
Claim 3
Dependent Claim 59 words
A component according to claim 1 wherein the reflector structure provides a bent path for acoustic waves of a primary wave propagation, and said offset corresponding to the weighting is parallel to a primary wave propagation direction which exists before a wave reflection at a corresponding weighted finger of the reflector structure after the waves leave the input means.
Claim 4
Dependent Claim 53 words
A component according to claim 1 wherein the reflector structure provides a bent path for the acoustic waves of the primary wave propagation, and said offset corresponding to the weighting is parallel to a primary wave propagation direction which exists after a first wave reflection at a respective finger along the bent path.
Claim 5
Dependent Claim 176 words
An electronic component functioning with reflected acoustic waves on a substrate and which has a reflector structure, input means for transmitting a primary wave, and output means for receiving a reflected wave, and wherein the reflector structure has finger weighting by means of displacing a position of fingers to be weighted, wherein the improvement comprises: the fingers to be weighted are functionally divided at least once in their longitudinal direction so as to creat sub-fingers; the sub-fingers are offset relative to one another in a primary wave propagation direction by a dimension corresponding to a prescribed weighting; the reflector structure providing a bent path for the acoustic waves of the primary wave propagation; and said offset corresponding to the weighting is partially parallel to a primary wave propagation direction which exists before a wave reflection at a corresponding weighted finger of the reflector structure after the waves leave the input means, and is partially parallel to a primary wave propagation direction which exists after a first wave reflection at a respective finger along the bent path.
Claim 6
Dependent Claim 176 words
An electronic component functioning with reflected acoustic waves on a substrate and which has a reflector structure, input means for transmitting a primary wave, and output means for receiving a reflected wave, and wherein the reflector structure has finger weighting by means of displacing a position of fingers to be weighted, wherein the improvement comprises: the fingers to be weighted are functionally divided at least once in their longitudinal direction so as to creat sub-fingers; the sub-fingers are offset relative to one another in a primary wave propagation direction by a dimension corresponding to a prescribed weighting; the reflector structure providing a bent path for the acoustic waves of the primary wave propagation; and said offset corresponding to the weighting is partially parallel to a primary wave propagation direction which exists before a wave reflection at a corresponding weighted finger of the reflector structure after the waves leave the input means, and is partially parallel to a primary wave propagation direction which exists after a first wave reflection at a respective finger along the bent path.
Claim 7
Dependent Claim 108 words
An electronic component functioning with reflected acoustic waves on a substrate and which has a reflector structure, input means for transmitting a primary wave, and output means for receiving a reflected wave, and wherein the reflector structure has finger weighting by means of displacing a position of fingers to be weighted, wherein the improvement comprises: the fingers to be weighted are functionally divided at least once in their longitudinal direction so as to create sub-fingers; the sub-fingers are offset relative to one another in a primary wave propagation direction by a dimension corresponding to a prescribed weighting; and adjacent ends of corresponding sub-fingers being connected to one another.
Claim 8
Dependent Claim 108 words
An electronic component functioning with reflected acoustic waves on a substrate and which has a reflector structure, input means for transmitting a primary wave, and output means for receiving a reflected wave, and wherein the reflector structure has finger weighting by means of displacing a position of fingers to be weighted, wherein the improvement comprises: the fingers to be weighted are functionally divided at least once in their longitudinal direction so as to create sub-fingers; the sub-fingers are offset relative to one another in a primary wave propagation direction by a dimension corresponding to a prescribed weighting; and adjacent ends of corresponding sub-fingers being connected to one another.
Claim 9
Dependent Claim 98 words
An acoustic wave component which functions with reflected acoustic waves, comprising: a substrate on which the acoustic waves travel; input means and output means for the acoustic waves on the substrate; a reflector structure on the substrate having strip-like fingers whose weighting is determined by displacing a position of the fingers; at least some of the fingers to be weighted being functionally divided at least once in a longitudinal direction so as to create sub-fingers; and the sub-fingers being offset relative to one another in a primary wave propagation direction by a dimension corresponding to a prescribed weighting.
Claim 10
Dependent Claim 98 words
An acoustic wave component which functions with reflected acoustic waves, comprising: a substrate on which the acoustic waves travel; input means and output means for the acoustic waves on the substrate; a reflector structure on the substrate having strip-like fingers whose weighting is determined by displacing a position of the fingers; at least some of the fingers to be weighted being functionally divided at least once in a longitudinal direction so as to create sub-fingers; and the sub-fingers being offset relative to one another in a primary wave propagation direction by a dimension corresponding to a prescribed weighting.

References Cited (Backward Citations)

US4336514A Cited
US4267534A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-05-27 1988-11-26 1989-05-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-05-27 1992-11-26 1993-05-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-05-27 1996-11-26 1997-05-28 $7700.00 Window Closed / Lapsed

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