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Analysis of Interdigital Surface Wave Transducers by Use of an Equivalent Circuit Model
Immittance, transfer, and scattering characteristics are studied for acoustic surface wave transducers of the interdigital electrode form. Linear network models are used to represent the transducer as a chain of identical three-ports which are acoustically in cascade but electrically in parallel. Tr...
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Published in: | IEEE transactions on microwave theory and techniques 1969-11, Vol.17 (11), p.856-864 |
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container_end_page | 864 |
container_issue | 11 |
container_start_page | 856 |
container_title | IEEE transactions on microwave theory and techniques |
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creator | Smith, W.R. Gerard, H.M. Collins, J.H. Reeder, T.M. Shaw, H.J. |
description | Immittance, transfer, and scattering characteristics are studied for acoustic surface wave transducers of the interdigital electrode form. Linear network models are used to represent the transducer as a chain of identical three-ports which are acoustically in cascade but electrically in parallel. Transducer operation at acoustic synchronism is described theoretically and compared to current experimental data for transducers operating at 100 MHz and fabricated on lithium niobate. Favorable lithium niobate configurations for efficient, broad-band transducer operation are given. Scattering characteristics as a function of electric load are discussed. Low values of acoustic reflection loss are predicted theoretically and observed experimentally when the electric load and transducer capacitance are in resonance. The frequency dependence of transducer radiation immittance is studied, and the response is found to be analogous to the response of an endfire antenna array. |
doi_str_mv | 10.1109/TMTT.1969.1127075 |
format | article |
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Linear network models are used to represent the transducer as a chain of identical three-ports which are acoustically in cascade but electrically in parallel. Transducer operation at acoustic synchronism is described theoretically and compared to current experimental data for transducers operating at 100 MHz and fabricated on lithium niobate. Favorable lithium niobate configurations for efficient, broad-band transducer operation are given. Scattering characteristics as a function of electric load are discussed. Low values of acoustic reflection loss are predicted theoretically and observed experimentally when the electric load and transducer capacitance are in resonance. The frequency dependence of transducer radiation immittance is studied, and the response is found to be analogous to the response of an endfire antenna array.</description><subject>Acoustic reflection</subject><subject>Acoustic scattering</subject><subject>Acoustic transducers</subject><subject>Capacitance</subject><subject>Electrodes</subject><subject>Equivalent circuits</subject><subject>Frequency synchronization</subject><subject>Lithium niobate</subject><subject>Surface acoustic waves</subject><subject>Surface waves</subject><issn>0018-9480</issn><issn>1557-9670</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1969</creationdate><recordtype>article</recordtype><recordid>eNpFkE1Lw0AQhhdRsFZ_gHjZk7fUnST7kWMpVQstHkzpcdlsJrKSJu1uUui_N6EFT8PLPO_APIQ8A5sBsOwt3-T5DDKRDTGWTPIbMgHOZZQJyW7JhDFQUZYqdk8eQvgdYsqZmpDdvDH1ObhA24qumg596X5cZ2r63fvKWKQ7c0Kae9OEsrfoAy3OdBtw5E1Dl8fenUyNTUcXztvedXTTllg_krvK1AGfrnNKtu_LfPEZrb8-Vov5OrKx5F0EJkZIQIrCKmNloopSCWRlJrMqKRMoUFUIBjmWUggupRVMCiaGr2QK0iZT8nq5e_DtscfQ6b0LFuvaNNj2QccqhUQJPoBwAa1vQ_BY6YN3e-PPGpgeFepRoR4V6qvCofNy6ThE_Oev2z_UtW0q</recordid><startdate>19691101</startdate><enddate>19691101</enddate><creator>Smith, W.R.</creator><creator>Gerard, H.M.</creator><creator>Collins, J.H.</creator><creator>Reeder, T.M.</creator><creator>Shaw, H.J.</creator><general>IEEE</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>19691101</creationdate><title>Analysis of Interdigital Surface Wave Transducers by Use of an Equivalent Circuit Model</title><author>Smith, W.R. ; Gerard, H.M. ; Collins, J.H. ; Reeder, T.M. ; Shaw, H.J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c275t-1a2e13176bc8ac738bd86e0d979f3d31be8fe1ae5ed766577c6076069677417c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1969</creationdate><topic>Acoustic reflection</topic><topic>Acoustic scattering</topic><topic>Acoustic transducers</topic><topic>Capacitance</topic><topic>Electrodes</topic><topic>Equivalent circuits</topic><topic>Frequency synchronization</topic><topic>Lithium niobate</topic><topic>Surface acoustic waves</topic><topic>Surface waves</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Smith, W.R.</creatorcontrib><creatorcontrib>Gerard, H.M.</creatorcontrib><creatorcontrib>Collins, J.H.</creatorcontrib><creatorcontrib>Reeder, T.M.</creatorcontrib><creatorcontrib>Shaw, H.J.</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on microwave theory and techniques</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Smith, W.R.</au><au>Gerard, H.M.</au><au>Collins, J.H.</au><au>Reeder, T.M.</au><au>Shaw, H.J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Analysis of Interdigital Surface Wave Transducers by Use of an Equivalent Circuit Model</atitle><jtitle>IEEE transactions on microwave theory and techniques</jtitle><stitle>TMTT</stitle><date>1969-11-01</date><risdate>1969</risdate><volume>17</volume><issue>11</issue><spage>856</spage><epage>864</epage><pages>856-864</pages><issn>0018-9480</issn><eissn>1557-9670</eissn><coden>IETMAB</coden><notes>ObjectType-Article-2</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-1</notes><notes>content type line 23</notes><abstract>Immittance, transfer, and scattering characteristics are studied for acoustic surface wave transducers of the interdigital electrode form. Linear network models are used to represent the transducer as a chain of identical three-ports which are acoustically in cascade but electrically in parallel. Transducer operation at acoustic synchronism is described theoretically and compared to current experimental data for transducers operating at 100 MHz and fabricated on lithium niobate. Favorable lithium niobate configurations for efficient, broad-band transducer operation are given. Scattering characteristics as a function of electric load are discussed. Low values of acoustic reflection loss are predicted theoretically and observed experimentally when the electric load and transducer capacitance are in resonance. The frequency dependence of transducer radiation immittance is studied, and the response is found to be analogous to the response of an endfire antenna array.</abstract><pub>IEEE</pub><doi>10.1109/TMTT.1969.1127075</doi><tpages>9</tpages></addata></record> |
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source | IEEE Electronic Library (IEL) Journals |
subjects | Acoustic reflection Acoustic scattering Acoustic transducers Capacitance Electrodes Equivalent circuits Frequency synchronization Lithium niobate Surface acoustic waves Surface waves |
title | Analysis of Interdigital Surface Wave Transducers by Use of an Equivalent Circuit Model |
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