Design and Test of Ultrasonic Imaging Circuit for CMUT Linear Array
LU Xiaoxing
SUN Shuaiwen
WU Shuaiqi
HE Changde
ZHANG Guojun
ZHANG Wendong
Abstract：For CMUT linear arrays,this paper designs and implements an ultrasonic imaging circuit design scheme based on FPGA for control and processing.The cssircuit has 32 transmitting and receiving channels.With FPGA as the control core,the ultra-sonic transmitting and echo signal receiving are realized by using a finite state machine(FSM)at the register-transfer level(RTL)to control the associated circuitry.The multi-channel data cache and transmission are completed by using the FIFO memory built in FPGA and USB3.0.During the test,the host computer is used to change the circuit parameters,and the computer-side software per-forms the algorithm to process the display image.The experimental results indicate that the circuit satisfies the B-mode imaging re-quirements for the CMUT probe,and can achieve an imaging rate of 20 frames per second.It has the characteristics of miniaturiza-tion and open architecture,This research provides strong support for the development and application of portable ultrasound imaging systems using CMUT arrays.
Keywords：capacitive micromechanical ultrasonic transducerultrasonic imaging circuitFPGA
Publication Date：2025-11-20
Online Publishing Date：2026-01-28(First online date of this platform, not the publication date of the document)
Pages：7( 172-178 )