What question did this study set out to answer?

The research aims to develop a dual-frequency impedance matching method for an acoustic transducer to improve output efficiency.

Research on dual-band impedance matching method of acoustic transducer while drilling based on an improved particle swarm optimization algorithm

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Research demonstrates enhanced dual-frequency outputs in an acoustic transducer, suggesting improved logging efficiency while drilling.

The research aims to develop a dual-frequency impedance matching method for an acoustic transducer to improve output efficiency.
Utilized a multi-mode equivalent circuit model of the transducer.
Incorporated a compression factor to improve convergence.
Employed an improved particle swarm optimization algorithm for parameter calculation.
Tested the impedance matching network in monopole and quadrupole modes.
Achieved a 1.5 times broader frequency band and a 1.9 times enhancement in active power.
Enhanced transmitting voltage response by 21% at 4.5 kHz and 12% at 14 kHz.
Improved maximum horizontal directivity by 32.34 dB for monopole and 43.18 dB for quadrupole mode.
Concentrated main energy of the excitation signal post-impedance matching.

Gou et al. (2026) studied this question.

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