ACOUSTIC SURFACE WAVE INTERACTION DEVICE
1536614 Surface wave devices MURATA MFG CO Ltd 2 Sept 1977 [3 Sept 1976 18 Jan 1977] 36752/77 Heading H3U A surface wave transducer comprises a plurality of serially-connected comb arrays 30- 44, wherein the arrays having the greatest amount of finger overlap have the least number of fingers and vic...
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| creator | IEKI HIDEHARU INOUE ATUSHI |
| description | 1536614 Surface wave devices MURATA MFG CO Ltd 2 Sept 1977 [3 Sept 1976 18 Jan 1977] 36752/77 Heading H3U A surface wave transducer comprises a plurality of serially-connected comb arrays 30- 44, wherein the arrays having the greatest amount of finger overlap have the least number of fingers and vice versa. This arrangement decreases the total capacitance of the transducer. To suppress a spurious response the finger overlap in the outer arrays may be increased relative to the overlap required to give a desired transfer function. Thus in the transducer of Fig. 16 (not shown) having six arrays, the curve representing the Fourier transform of the transfer function is weighted by a factor 1À5 in the outermost arrays, and by 1À1 in the arrays adjacent thereto. |
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This arrangement decreases the total capacitance of the transducer. To suppress a spurious response the finger overlap in the outer arrays may be increased relative to the overlap required to give a desired transfer function. Thus in the transducer of Fig. 16 (not shown) having six arrays, the curve representing the Fourier transform of the transfer function is weighted by a factor 1À5 in the outermost arrays, and by 1À1 in the arrays adjacent thereto.</description><language>eng</language><subject>BASIC ELECTRIC ELEMENTS ; BASIC ELECTRONIC CIRCUITRY ; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS ; RESONATORS ; SEMICONDUCTOR DEVICES</subject><creationdate>1979</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19790306&DB=EPODOC&CC=US&NR=4143343A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19790306&DB=EPODOC&CC=US&NR=4143343A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>IEKI; HIDEHARU</creatorcontrib><creatorcontrib>INOUE; ATUSHI</creatorcontrib><title>ACOUSTIC SURFACE WAVE INTERACTION DEVICE</title><description>1536614 Surface wave devices MURATA MFG CO Ltd 2 Sept 1977 [3 Sept 1976 18 Jan 1977] 36752/77 Heading H3U A surface wave transducer comprises a plurality of serially-connected comb arrays 30- 44, wherein the arrays having the greatest amount of finger overlap have the least number of fingers and vice versa. This arrangement decreases the total capacitance of the transducer. To suppress a spurious response the finger overlap in the outer arrays may be increased relative to the overlap required to give a desired transfer function. Thus in the transducer of Fig. 16 (not shown) having six arrays, the curve representing the Fourier transform of the transfer function is weighted by a factor 1À5 in the outermost arrays, and by 1À1 in the arrays adjacent thereto.</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>BASIC ELECTRONIC CIRCUITRY</subject><subject>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRICITY</subject><subject>IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS</subject><subject>RESONATORS</subject><subject>SEMICONDUCTOR DEVICES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1979</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNBwdPYPDQ7xdFYIDg1yc3R2VQh3DHNV8PQLcQ1ydA7x9PdTcHEN83R25WFgTUvMKU7lhdLcDPJuriHOHrqpBfnxqcUFicmpeakl8aHBJoYmxsYmxo7GhFUAAIV3I2w</recordid><startdate>19790306</startdate><enddate>19790306</enddate><creator>IEKI; HIDEHARU</creator><creator>INOUE; ATUSHI</creator><scope>EVB</scope></search><sort><creationdate>19790306</creationdate><title>ACOUSTIC SURFACE WAVE INTERACTION DEVICE</title><author>IEKI; HIDEHARU ; INOUE; ATUSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US4143343A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1979</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>BASIC ELECTRONIC CIRCUITRY</topic><topic>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRICITY</topic><topic>IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS</topic><topic>RESONATORS</topic><topic>SEMICONDUCTOR DEVICES</topic><toplevel>online_resources</toplevel><creatorcontrib>IEKI; HIDEHARU</creatorcontrib><creatorcontrib>INOUE; ATUSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>IEKI; HIDEHARU</au><au>INOUE; ATUSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>ACOUSTIC SURFACE WAVE INTERACTION DEVICE</title><date>1979-03-06</date><risdate>1979</risdate><abstract>1536614 Surface wave devices MURATA MFG CO Ltd 2 Sept 1977 [3 Sept 1976 18 Jan 1977] 36752/77 Heading H3U A surface wave transducer comprises a plurality of serially-connected comb arrays 30- 44, wherein the arrays having the greatest amount of finger overlap have the least number of fingers and vice versa. This arrangement decreases the total capacitance of the transducer. To suppress a spurious response the finger overlap in the outer arrays may be increased relative to the overlap required to give a desired transfer function. Thus in the transducer of Fig. 16 (not shown) having six arrays, the curve representing the Fourier transform of the transfer function is weighted by a factor 1À5 in the outermost arrays, and by 1À1 in the arrays adjacent thereto.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS RESONATORS SEMICONDUCTOR DEVICES |
| title | ACOUSTIC SURFACE WAVE INTERACTION DEVICE |
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