电子学报2017，Vol.45Issue(5)：1057-1063,7.DOI:10.3969/j.issn.0372-2112.2017.05.005
AOTF-NIR宽带功率超声换能器阻抗匹配网络的设计与优化
The Design and Optimization of Impedance Matching Network Based on Broadband and Power Ultrasonic Transducer of AOTF-NIR
摘要
Abstract
With the AOTF-NIR spectral imaging technology is widely used in the deep space exploration,ultrasonic transducer as AOTF-NIR core components for it''s operating bandwidth,spectrum diffraction efficiency and power efficiency,put forward higher requirements.It has different input impedances at different frequencies.When the drive signal source output impedance and ultrasound transducer input impedance mismatch will produce energy losses.Resulting in unable to the maximum power delivered to the transducer,so that the AOTF-NIR spectroscopy diffraction efficiency is reduced,affecting spectral sensitivity.The article by ADS simulation and experimental testing,applied on filter network theory and used LC lossless energy storage element and designed one kind of bandpass broadband matching network.Finally,impedance matching network return loss S11>-29.8dB within the 60-120MHz bandwidth,impedance matching network power efficiency is more than 90%.By constantly fine-tuning and optimizing matching the impedance values and LC parameter is to improve the spectral diffraction efficiency and spectral diffraction efficiency is more than 90%.Improved spectral sensitivity and spectral imaging clarity within the 620-1150nm band.关键词
功率超声换能器/阻抗频率特性/宽带阻抗匹配网络/全局优化Key words
power ultrasonic transducer/frequency characteristic impedance/broadband impedance matching network/global optimization分类
信息技术与安全科学引用本文复制引用
王玉江,王志斌,陈媛媛,宋雁鹏,王芳,薛鹏,薛锐..AOTF-NIR宽带功率超声换能器阻抗匹配网络的设计与优化[J].电子学报,2017,45(5):1057-1063,7.基金项目
国际科技合作项目(No.2013DFR10150,No.2012DFA10680) （No.2013DFR10150,No.2012DFA10680）
山西省青年科技研究基金 (No.2014021012) （No.2014021012）
