新型双电阻-二极管限幅器电路结构，用于高压可靠超声接收系统。
Novel dual-resistor-diode limiter circuit structures for high-voltage reliable ultrasound receiver systems.
出版信息
Technol Health Care. 2022;30(S1):513-520. doi: 10.3233/THC-228047.
BACKGROUND
The limiters have been used to protect the ultrasound receivers because of the inherent characteristic of the transducers which are required to use the high voltage excitation to obtain the reasonable echo signal amplitudes.
OBJECTIVE
Among the variety of the limiters, the performances of discharge voltage degradation from the limiters gradually deteriorate the whole ultrasound systems according to the applied voltages of the ultrasonic transducers. This could cause the ultrasound systems to be unreliable for the long-term operations, resulting in possibly breaking the receiver systems.
METHODS
Designed limiters were evaluated with insertion loss, total harmonic distortion, and pulse-echo responses with the ultrasound transducer devices.
RESULTS
Designed new dual-resistor-diode limiters exhibited greater and faster suppression of the pulse width (1.15 V and 6.1 μs) for high-voltage signals.
CONCLUSIONS
Our proposed dual-resistor-diode limiter could be one of the potential candidates for reliable ultrasound receiver system.
背景
由于换能器的固有特性，需要使用高压激励来获得合理的回波信号幅度，因此限幅器已被用于保护超声接收器。
目的
在各种限幅器中，根据超声换能器的应用电压，限幅器的放电电压逐渐降低，从而逐渐降低整个超声系统的性能。这可能导致超声系统在长期运行中不可靠，从而可能损坏接收器系统。
方法
使用插入损耗、总谐波失真和脉冲回波响应对超声换能器设备进行了设计限幅器的评估。
结果
设计的新型双电阻-二极管限幅器对高压信号表现出更大和更快的脉冲宽度抑制（1.15 V 和 6.1 μs）。
结论
我们提出的双电阻-二极管限幅器可能是可靠的超声接收器系统的潜在候选者之一。
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