Portable ultrasound has been extensively used for diagnostic applications in health monitoring, emergency rooms, and ambulances. However, these handheld ultrasound systems may suffer from heat and battery issues attributed to the large power consumption of the transmitter. Additionally, the largest portion of the direct current (DC) power consumption can be attributed to the amplifier in the digital-to-analog converter (DAC) of the transmitter and to the analog-to-digital converter (ADC) of the receiver. Therefore, the number of transmit/receive channels in a portable ultrasound instrument is one of the crucial design factors regarding heat and battery related issues. To address these problems, we propose an acoustic-field beamforming (AFB) technique for low-power portable ultrasound systems with a single receive and five transmit channels. Finally, the simulation, experimental, and in vivo results verified the feasibility of this approach.

中文翻译：

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低功率便携式超声的声场波束形成。

便携式超声已广泛用于健康监测，急诊室和救护车中的诊断应用。但是，这些手持式超声系统可能会因发射器的高功耗而遭受热量和电池问题的困扰。此外，直流（DC）功耗的最大部分可归因于发送器的数模转换器（DAC）中的放大器和接收器的模数转换器（ADC）。因此，便携式超声仪器中的发射/接收通道数量是有关热量和电池相关问题的关键设计因素之一。为了解决这些问题，我们为具有单个接收通道和五个发射通道的低功率便携式超声系统提出了一种声场波束成形（AFB）技术。