{"title":"以f/sub 0/和2f/sub 0/为中心的可切换频带的医用超声换能器","authors":"T. R. Gururaja, A. Shurland, J. Chen","doi":"10.1109/ULTSYM.1997.663314","DOIUrl":null,"url":null,"abstract":"We present a novel type of ultrasonic imaging transducer in which the operating frequency can be switched between two distinct bands centered about f/sub 0/ and 2f/sub 0/. In effect, we can achieve greater than 100% transducer bandwidth at the -6 dB level. The transducer is based on using DC bias induced piezoelectricity in electrostrictive materials such as lead magnesium niobate-lead titanate (PMN-PT) relaxor ferroelectric materials.","PeriodicalId":6369,"journal":{"name":"1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)","volume":"1 1","pages":"1659-1662 vol.2"},"PeriodicalIF":0.0000,"publicationDate":"1997-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":"{\"title\":\"Medical ultrasonic transducers with switchable frequency bands centered about f/sub 0/ and 2f/sub 0/\",\"authors\":\"T. R. Gururaja, A. Shurland, J. Chen\",\"doi\":\"10.1109/ULTSYM.1997.663314\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We present a novel type of ultrasonic imaging transducer in which the operating frequency can be switched between two distinct bands centered about f/sub 0/ and 2f/sub 0/. In effect, we can achieve greater than 100% transducer bandwidth at the -6 dB level. The transducer is based on using DC bias induced piezoelectricity in electrostrictive materials such as lead magnesium niobate-lead titanate (PMN-PT) relaxor ferroelectric materials.\",\"PeriodicalId\":6369,\"journal\":{\"name\":\"1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)\",\"volume\":\"1 1\",\"pages\":\"1659-1662 vol.2\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1997-10-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ULTSYM.1997.663314\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ULTSYM.1997.663314","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Medical ultrasonic transducers with switchable frequency bands centered about f/sub 0/ and 2f/sub 0/
We present a novel type of ultrasonic imaging transducer in which the operating frequency can be switched between two distinct bands centered about f/sub 0/ and 2f/sub 0/. In effect, we can achieve greater than 100% transducer bandwidth at the -6 dB level. The transducer is based on using DC bias induced piezoelectricity in electrostrictive materials such as lead magnesium niobate-lead titanate (PMN-PT) relaxor ferroelectric materials.
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