一个低复杂度和高频的ASIC收发器用于超声波成像系统
Jaeho Lee1, Keun Young Huh2, Dongil Kang1
1Department of Electronic Engineering, Hanyang University, Seoul, 04763 South Korea.
Biomedical engineering letters
|October 28, 2024
概括
本研究介绍了用于超声波成像的低复杂度应用特定集成电路 (ASIC) 收发器. 该设计实现了高性能与高效的功率使用,适合先进的医学成像应用.
科学领域:
- 电气工程 电气工程
- 生物医学工程 生物医学工程
- 集成电路设计 集成电路设计
背景情况:
- 超声波成像系统需要高效和高性能收发器.
- 尽量减少应用特定集成电路 (ASIC) 的复杂性,对于系统集成和成本效益至关重要.
研究的目的:
- 介绍一款用于超声波成像系统的新型高频ASIC收发器.
- 为了实现低复杂性,同时在发射器 (TX) 和接收器 (RX) 功能中保持高性能.
主要方法:
- 设计了一个低复杂度的ASIC收发器,使用TX的D类功率放大器和RX的电阻反传 impedance放大器 (TIA).
- 优化了接收器 (RX) 电路,包括一个共同源放大器和一个源追随器,以获得高增益和低噪声.
- 使用0.18微米HV双极-CMOS-DMOS (BCD) 工艺制造了ASIC.
主要成果:
- 在RX的30MHz时,实现了90dBΩ的测量过 impedance 增益和5.6pA/√Hz的输入引用噪声.
- 对于TX和RX都保持了高达30MHz的宽带宽.
- 使用电容微机超声波传感器 (CMUT) 证明了声学性能,显示1.78kPa的峰值压力并确认带宽兼容性.
结论:
- 开发的ASIC收发器为超声波成像提供了低复杂度,高性能解决方案.
- 该设计表现出优异的增益,低噪音和宽带宽,适用于先进的医疗超声波应用.
- 与CMUT成功集成验证了收发器对有效超声波成像的能力.
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