对于无线供电的生物医疗设备而言,一个节能的信封探测器-低振幅-转移-关键向前遥测
IEEE transactions on biomedical circuits and systems
|July 12, 2024
概括
本研究介绍了一种用于无线电源/数据传输 (WPDT) 系统的无封面探测器 (EDL) 振幅转换键 (ASK) 前向遥测 (FT) 解调器. 新型设计显著降低了功耗和芯片面积,同时保持了高数据准确性.
科学领域:
- 电气工程 电气工程
- 集成电路设计 集成电路设计
- 无线通信系统无线通信系统
背景情况:
- 无线电源/数据传输 (WPDT) 系统中的常规振幅转换键 (ASK) 前向遥测 (FT) 调节器通常依赖于体积庞大且耗电密集的信封探测器和模拟比较器.
- 这些组件有助于增加功耗和更大的芯片足迹,限制了WPDT系统的效率和小型化.
研究的目的:
- 为WPDT系统提出和验证一个没有封面探测器 (EDL) 的ASK FT解调器.
- 与传统设计相比,通过用数字控制器替换模拟元件来减少功耗和芯片面积.
- 为了保持高效的解调和数据准确性,同时与无线电源接收电路集成.
主要方法:
- 开发EDL ASK FT调节器,使用数字控制器,而不是信封探测器和模拟比较器.
- 利用来自AC-DC调节器的门控制信号来无线接收电源,同时管理电力和调节数据.
- 实施数字清洁器来完善控制信号和同步器来调整频率,减轻噪声和确保数据完整性.
- 制造和测试一个0.25微米CMOS原型芯片.
主要成果:
- 与传统设计相比,拟议的EDL ASK FT解调器实现了显著的38.2%的功耗减小.
- 解调器占据的最小面积为0.023mm2.
- 在保持4.5V的调节负载电压的同时,实现了低比特误差率 (BER) 低于10−4.
结论:
- 在EDL ASK FT解调器为WPDT系统提供了一个高效和紧的解决方案.
- 数字化方法有效地取代了耗电大量的模拟元件,从而节省了大量的电力和减少了面积.
- 证明的性能,包括低BER和稳定的电压调节,验证了拟议设计对实际WPDT应用的有效性.
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