ELECTRICAL SURFACE WAVE FILTER

ELECTRICAL SURFACE WAVE FILTER

An electrical surface acoustic wave filter with a wafershaped substrate (1) of monocrystalline, piezoelectric material, in particular lithium niobate, wherein one substrate side supports interdigital transducers (IW 1, IW 2) with metallic electrodes mutually engaging in comblike fashion for the stim...

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1. Verfasser: FABER, WERNER
Format: Patent
Sprache:eng ; ger
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BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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creator FABER, WERNER
description An electrical surface acoustic wave filter with a wafershaped substrate (1) of monocrystalline, piezoelectric material, in particular lithium niobate, wherein one substrate side supports interdigital transducers (IW 1, IW 2) with metallic electrodes mutually engaging in comblike fashion for the stimulation and coupling out of the surface waves and with plastic and/or elastic damping compounds (10, 11) for the suppression of disturbing wave reflections. The damping compound (10, 11) is applied indirectly or directly to the substrate surface between the active interdigital transducer area "b" and the adjacent long substrate edges (4, 5) of at least one interdigital transducer (IW 1), and that at least in the inactive interdigital transducer areas (a, a).
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The damping compound (10, 11) is applied indirectly or directly to the substrate surface between the active interdigital transducer area "b" and the adjacent long substrate edges (4, 5) of at least one interdigital transducer (IW 1), and that at least in the inactive interdigital transducer areas (a, a).</description><language>eng ; ger</language><subject>BASIC ELECTRONIC CIRCUITRY ; ELECTRICITY ; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS ; RESONATORS</subject><creationdate>1991</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&amp;date=19910724&amp;DB=EPODOC&amp;CC=EP&amp;NR=0187918B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19910724&amp;DB=EPODOC&amp;CC=EP&amp;NR=0187918B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FABER, WERNER</creatorcontrib><title>ELECTRICAL SURFACE WAVE FILTER</title><description>An electrical surface acoustic wave filter with a wafershaped substrate (1) of monocrystalline, piezoelectric material, in particular lithium niobate, wherein one substrate side supports interdigital transducers (IW 1, IW 2) with metallic electrodes mutually engaging in comblike fashion for the stimulation and coupling out of the surface waves and with plastic and/or elastic damping compounds (10, 11) for the suppression of disturbing wave reflections. 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subjects BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
title ELECTRICAL SURFACE WAVE FILTER
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