中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Optimization of electrode size for aluminum-nitride matrix ultrasonic transducers in the frequency range above 200 MHz

文献类型:期刊论文

作者Wei YJ(魏阳杰); Herzog, Thomas; Heuer, Henning
刊名Ultrasonics
出版日期2013
卷号53期号:3页码:739-744
关键词Aluminum Aluminum nitride Nitrides Optimization Silicon wafers Thin films Ultrasonic transducers
ISSN号0041-624X
产权排序1
通讯作者魏阳杰
中文摘要This paper describes an optimization method of the top electrode size for a thin film matrix ultrasonic transducer (M-UT) in the frequency range above 200 MHz. The goal of this work is to design an optimal top electrode size for an M-UT providing the maximal output peak-peak voltage (VPP) and the maximal signal-to-noise ratio (SNR) without additional electrical impedance matching. In order to reduce the complexity of the M-UT with more than 1000 elements, an intrinsic matching by electrode size variation is necessary. However, the size of a single element top electrode for an M-UT is related to the number of elements within a targeted sensor area, VPP and SNR of the transducer. In this paper, varying the active area of the top electrode from 0.09 to 25 mm2 shows that for an Al-AlN-Al on silicon wafer configuration connected with a JSR Ultrasonics pulser/receiver (50 ohms), the optimal electrode size is 1 mm2. With the optimal size electrode, the maximum output VPP of 0.08 V and the SNR of 42.93 dB are achieved at the resonance frequency of 225 MHz, and the bandwidth is16.21 MHz.
WOS标题词Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]Acoustics ; Radiology, Nuclear Medicine & Medical Imaging
研究领域[WOS]Acoustics ; Radiology, Nuclear Medicine & Medical Imaging
关键词[WOS]FILM
收录类别SCI ; EI
语种英语
WOS记录号WOS:000314872900015
公开日期2013-04-21
源URL[http://ir.sia.cn/handle/173321/10635]  
专题沈阳自动化研究所_机器人学研究室
推荐引用方式
GB/T 7714
Wei YJ,Herzog, Thomas,Heuer, Henning. Optimization of electrode size for aluminum-nitride matrix ultrasonic transducers in the frequency range above 200 MHz[J]. Ultrasonics,2013,53(3):739-744.
APA Wei YJ,Herzog, Thomas,&Heuer, Henning.(2013).Optimization of electrode size for aluminum-nitride matrix ultrasonic transducers in the frequency range above 200 MHz.Ultrasonics,53(3),739-744.
MLA Wei YJ,et al."Optimization of electrode size for aluminum-nitride matrix ultrasonic transducers in the frequency range above 200 MHz".Ultrasonics 53.3(2013):739-744.

入库方式: OAI收割

来源:沈阳自动化研究所

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