一个完全集成的低功率多模式射频接收器用于BDS-3/GPS.
Shalin Huang1, Jiang Li1, Mingdong Li1
1School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 401331, China.
Sensors (Basel, Switzerland)
|September 9, 2023
概括
本研究介绍了一种低功耗,面积高效的接收器,用于全球定位系统 (GPS) 和北斗导航卫星系统 (BDS-3) 信号. 综合设计实现了精确的本地化,耗电最小,足迹小.
科学领域:
- 电气工程 电气工程
- 卫星导航系统 卫星导航系统
- 集成电路设计 集成电路设计
背景情况:
- 准确的卫星导航对于各种应用至关重要.
- 现有的接收器通常需要重的离芯片组件,增加成本和功耗.
- 对于全球定位系统 (GPS) 和北斗导航卫星系统 (BDS-3) 的L1频段,需要紧的低功耗接收器.
研究的目的:
- 为了呈现一个完全集成的,低功耗的,面积高效的接收器.
- 为了证明BDS-3和GPS L1频段的准确定位能力.
- 在没有外部低噪音放大器的情况下实现高性能.
主要方法:
- 使用低中间频率 (低IF) 拓.
- 集成的数字辅助校准方案:RC校准,自动增强控制 (AGC) 和DC偏移校正.
- 使用标准的55nmCMOS技术制造了接收器.
主要成果:
- 实现了最大增强113.2dB,增强控制范围为61dB.
- 在1.2V电源下,最低噪声值为1.74dB.
- 功耗为8.7mA (带有合成器) 和4.8mA (没有合成器),面积分别为0.73mm2和0.345mm2.
结论:
- 集成的低IF接收器为空间有限和功率敏感的导航应用提供了引人注目的解决方案.
- 该设计通过集成校准有效地减轻了工艺,电压和温度 (PVT) 的变化.
- 在增益,噪声,功率效率和面积方面表现出高性能.
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