← 返回 JSSC 论文列表JSSC 2019第7期RF & Wireless
Enhanced Interference Rejection Bluetooth Low-Energy Back-Channel Receiver With
提出两种低功耗BLE唤醒接收器，通过跳频增强干扰抑制能力。
灵敏度-57.5dBm/-82.2dBm，功耗150µW/1.2mW
蓝牙低功耗唤醒接收器干扰抑制信道跳频低功耗设计
▸创新点1：双混频器架构设计（电路创新） - 通过采用双混频器结构将射频输入下变频，使环形振荡器工作在射频频率的一半，显著降低了本地振荡器（LO）的功耗，实现了150 µW的低功耗运行。
▸创新点2：LC振荡器快速跳频技术（电路创新） - 使用基于LC的振荡器替代传统结构，提供更高的频率稳定性和更低相位噪声，支持更快的信道跳变速度，同时功耗控制在1.2 mW，满足BLE实时性需求。
▸创新点3：标准兼容性系统设计（系统创新） - 通过将后信道（BC）消息调制到BLE标准广告信道的跳频序列中，使唤醒功能可直接由商用BLE设备触发，无需修改现有协议栈，实现-57.5/-82.2 dBm的高灵敏度接收。
▸创新点4：混合信号干扰抑制方案（方法创新） - 结合数字基带处理与模拟前端滤波，在保持低功耗的同时增强对相邻信道干扰的抑制能力，提升复杂环境下的接收可靠性。
Abstract
Two prototypes of low-power back-channel (BC)
Bluetooth low-energy (BLE) wake-up receivers are presented.
The receivers scan the BLE advertising channels for modulated
advertising channel patterns by hopping the local oscillator (LO)
frequency. The BC message is modulated in the sequence of
the three advertising channels in each advertising event. This
makes the wake-up via BC messaging compatible with the
BLE standard, so it can be generated by a commercial off-
the-shelf device. The first propo