A method for new type ultrasonic signal attenuator design using one-dimensional discontinuous interfaces model

Ultrasonic signal attenuator is a component of acoustic logging instruments. It is designed to eliminate the direct wave which arrives at receiving probe directly through drill collar without passing through the formation. Wave function is derived from the model of the sound waves propagating in the one-dimensional discontinuous interfaces. The Ultrasonic signal attenuator consists of three units which are composed by five different materials with big wave impedance difference. These three units have good wave filtering effects on different frequency bands because the thickness of five materials is changed. After stacking the three units, an ultrasonic signal attenuator with better wave filtering effects on the whole frequency band is obtained. The design is verified to be feasible through the MATLAB simulation.

[1]  D. Dietz,et al.  A minimally invasive ultrasound probe using non-coax cabling , 2001, 2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.01CH37263).

[2]  O.V. Stukach.  Variable Attenuator with Low Phase Shift , 2006, 2006 European Conference on Wireless Technology.

[3]  Calvin W. Kessler,et al.  Application of Shear Anisotropy from a New Generation Crossed Dipole Acoustic Tool , 2002 .

[4]  Zhang Fei.  Sound isolation numerical simulation on isolator of logging while drilling sonic tool using finite difference time-domain method , 2009 .

[5]  Yidong Chong,et al.  Time-Reversed Lasing and Interferometric Control of Absorption , 2011, Science.

[6]  Qutaiba Ibrahem Ali,et al.  Simulation & performance study of wireless sensor network (WSN) using MATLAB , 2010, 2010 1st International Conference on Energy, Power and Control (EPC-IQ).

[7]  Li Yu-ling.  Applications of a New Generation Crossed Dipole Logging Tool (WaveSonic) , 2004 .

[8]  T. Ritter,et al.  Optimization of pulse transmission in a high-frequency ultrasound imaging system , 2001, 2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.01CH37263).

[9]  Crosstalk in ribbon-based probe cables , 2000, 2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121).

[10]  Javad Abbaszadeh Bargoshadia,et al.  Design and manufacture an ultrasonic dispersion system with automatic frequency adjusting property , 2011, 2011 IEEE 7th International Colloquium on Signal Processing and its Applications.