Ambient radio waves have largely been ignored as a potential power source until recently, because the power of a broadcast radio signal rapidly decreases with distance.

直到最近环境无线电波才格外受到重视成为一种潜在的电源，这是因为广播电台的无线电信号发电随着距离的增加而锐减。

youdao

Reference source outputs a stable reference signal which is independent of power supply voltage, temperature and process.

其输出的基准信号稳定，与电源电压、温度以及工艺的变化无关。

youdao

The analog part mainly includes power source, power control, signal generation, signal modulation, high voltage output control and feedback control circuit.

模拟部分主要包括电源、功率控制、信号产生、信号调制、高压输出控制和反馈控制电路。

youdao

Ambient radio waves have largely been ignored as a potential power source until recently, because the power of a broadcast radio signal rapidly decreases with distance.

ECONOMIST: Monitor