AOTF-NIR宽带功率超声换能器阻抗匹配网络的设计与优化

doi:10.3969/j.issn.0372-2112.2017.05.005

电子学报 ›› 2017, Vol. 45 ›› Issue (5): 1057-1063.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

王玉江², 王志斌^1,2,3, 陈媛媛², 宋雁鹏², 王芳², 薛鹏², 薛锐²

1. 中北大学电子测试技术重点实验室, 山西太原 030051;
2. 中北大学山西省光电信息与仪器工程技术研究中心, 山西太原 030051;
3. 中北大学仪器科学与动态测试教育部重点实验室, 山西太原 030051

收稿日期:2016-01-14 修回日期:2016-03-31 出版日期:2017-05-25
- 通讯作者:
- 王志斌
- 作者简介:
- 王玉江 男,1989年出生于山东潍坊,硕士研究生,主要从事高频信号的获取与处理的研究.E-mail:1522916824@qq.com
- 基金资助:
- 国际科技合作项目 (No.2013DFR10150，No.2012DFA10680）; 山西省青年科技研究基金 (No.2014021012）

The Design and Optimization of Impedance Matching Network Based on Broadband and Power Ultrasonic Transducer of AOTF-NIR

WANG Yu-jiang², WANG Zhi-bin^1,2,3, CHEN Yuan-yuan², SONG Yan-peng², WANG Fang², XUE Peng², XUE Rui²

1. Electronics Laboratory Testing Technology, North University of China, Taiyuan, Shanxi 030051, China;
2. Shanxi Provincal Research Center for Opto-Electronic Information and Instrument Enginering Technology, North University of China, Taiyuan, Shanxi 030051, China;
3. Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan, Shanxi 030051, China

Received:2016-01-14 Revised:2016-03-31 Online:2017-05-25 Published:2017-05-25
- Supported by:
- International Science and Technology Cooperation Program of China (No.2013DFR10150, No.2012DFA10680); Youth Science and Technology Research Fund of Shanxi Province (No.2014021012)

摘要/Abstract

摘要：

随着近红外声光可调滤波器（Near Infrared Acousto-Optic Tunable Filter，AOTF-NIR）光谱成像技术在深空探测的广泛应用，超声换能器作为AOTF-NIR核心部件，对其工作带宽、光谱衍射效率及功率效率提出了更高的要求.超声换能器在不同频率下具有不同的输入阻抗，当驱动信号源输出阻抗与换能器输入阻抗失配时将会产生能量损耗，导致无法把功率最大限度的传递给换能器，从而使AOTF-NIR光谱衍射效率降低，影响光谱灵敏度.该文通过射频电路先进设计系统（Advanced Design System，ADS）仿真及实验测试，运用滤波器网络理论，采用LC无耗储能元件设计了一种带通型宽带匹配网络.最终在60-120MHz带宽范围内阻抗匹配网络的回波损耗S₁₁>-29.8dB，阻抗匹配网络功率效率达到90%以上.通过不断地微调优化匹配阻抗值及LC参数值，以此来提高光谱衍射效率，使光谱衍射效率最高达90%以上，提高了在620-1150nm波段内的光谱灵敏度及光谱成像清晰度.

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

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.

Key words: power ultrasonic transducer, frequency characteristic impedance, broadband impedance matching network, global optimization

中图分类号:

TN65

王玉江, 王志斌, 陈媛媛, 等. 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.

WANG Yu-jiang, WANG Zhi-bin, CHEN Yuan-yuan, et al. The Design and Optimization of Impedance Matching Network Based on Broadband and Power Ultrasonic Transducer of AOTF-NIR[J]. Acta Electronica Sinica, 2017, 45(5): 1057-1063.

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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

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