A New Method of Designing Electrical Impedance Matching Network for Piezoelectric Ultrasound Transducer

Abstract

A new method that is based on genetic algorithm (GA) is developed to design electrical impedance matching network for broadband piezoelectric ultrasound transducer. The new method can both optimize the topology of the matching network and perform optimization on the components at the same time. Results of classical algorithms are referenced to reduce the number of candidate topologies and greatly simplify the calculation process. Some calculation strategies, such as elitist strategy and clearing niche method, are adopted during optimization to make sure that the algorithm can convergence to global optimal result. Simulation results show that the new method has advantages over designing complex impedance matching network.

Investigation of Pulser-transducer Matching Networks for Power Delivery Efficiency of Spread Spectrum Signals

“…Matching networks enhance the transducer response and can be synthesized analytically, e.g., San Emeterio et al (2002) or using computational optimization as Huang, Paramo (2011). Some authors use transducer equivalent circuit (e.g., An, Zhang (2014)) while others use experimentally measured impedance (e.g., Capineri et al (1993)). Simulations of the mutual performance of the pulser, matching network, coaxial cable and transducer were used by Ramos et al (2006).…”

The Effect of Electrical Impedance Matching on the Electromechanical Characteristics of Sandwiched Piezoelectric Ultrasonic Transducers

“…Regarding the investigation of EIM for piezoelectric transducers, the published articles mainly focused on researching the electrical effect, such as bandwidth, the received amplitude, and the power of the acquired signal [ 9 , 10 , 11 , 12 ]. In addition, the design of EIM networks for high-frequency transducers has attracted much attention, for example, Lockwood G.R.…”