论文标题
隧道猫：使用隧道二极管的传感器标签的低功率通信
TunnelScatter: Low Power Communication for Sensor Tags using Tunnel Diodes
论文作者
论文摘要
由于功耗极低，反向散射已成为用于收获能量的无电池设备的首选传输机制。但是，最近的反向散射系统的局限性是通信范围缩放具有环境载体信号（ACS）的强度。这意味着要实现远距离，反向散射标签需要反映强大的ACS，这实际上意味着它需要接近ACS发射极。我们提出了隧道划线，这是一种克服了这一限制的机制。 TunnelsCatter使用基于隧道二极管的射频振荡器在没有ACS时启用传输，并且相同的振荡器作为反射放大器在ACS较弱时支持反向散射传输。我们的结果表明，即使没有ACS，TunnelsCatter也能够通过覆盖18米距离的几个墙壁传输，同时消耗了57微米的峰值偏置功率。基于隧道猫（TunnelsCatter），我们设计了无电池传感器标签，称为Tunneltags，可以使用TunnelsCatter机制感知物理现象并传输它们。
Due to extremely low power consumption, backscatter has become the transmission mechanism of choice for battery-free devices that operate on harvested energy. However, a limitation of recent backscatter systems is that the communication range scales with the strength of the ambient carrier signal(ACS). This means that to achieve a long range, a backscatter tag needs to reflect a strong ACS, which in practice means that it needs to be close to an ACS emitter. We present TunnelScatter, a mechanism that overcomes this limitation. TunnelScatter uses a tunnel diode-based radio frequency oscillator to enable transmissions when there is no ACS, and the same oscillator as a reflection amplifier to support backscatter transmissions when the ACS is weak. Our results show that even without an ACS, TunnelScatter is able to transmit through several walls covering a distance of 18 meter while consuming a peak biasing power of 57 microwatts. Based on TunnelScatter, we design battery-free sensor tags, called TunnelTags, that can sense physical phenomena and transmit them using the TunnelScatter mechanism.
