会议专题

DESIGN OF AN ULTRA-WIDEBAND BAND-PASSFILTER CIRCUIT FOR ELECTROMAGNETIC ULTRASONIC SIGNAL CONDITION

  This paper presents a new filtering method for the electromagnetic acoustic signal detection.An ultra-wideband band-pass filter circuit is designed based on the filtering approach of the band-pass filter circuit, which is composed of several second-order infinite gain multiple feedback band-pass filters in parallel.The bandwidth of the new filter can be adjusted by increasing or decreasing the number of filters and the fluctuations in the pass-band can also be modified by changing the center frequency of adjacent filters in parallel.Results of simulation and experiments show that the circuit proposed in this paper does have a wide pass-band and signals within the pass-band can be filtered effectively.

EMAT Ultra-wideband band-pass filter Signal processing Amplitude-frequency characteristic

Tian-xiang HU Ying-hong ZHANG Xiao WEI Zheng-hua QIAN

State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

国际会议

The 2019 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2019(第13届)全国压电和声波理论及器件技术研讨会)

哈尔滨

英文

151-155

2019-01-11(万方平台首次上网日期,不代表论文的发表时间)