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目前的太赫兹波功率探头,结构较为复杂,成本较高,且能承受的最大输入功率较低。本文的热敏式太赫兹波功率探头,其原理是太赫兹波被吸波材料吸收后转化为热量,热量通过热路支撑体传导,应用温度传感器采集热路支撑体上的温度差,运用单片机测量其温度差变化,进而计算待测量的太赫兹波平均功率。相对于其它太赫兹探头,其结构简单,成本较低,相对测量的太赫兹平均功率较高,达1.5W左右,适用于大功率微波功率的测量。
The current terahertz wave power probe, the structure is more complex, higher cost, and can withstand the maximum input power is low. In this paper, the thermal terahertz wave power probe, the principle is the terahertz wave absorbed by the absorbing material into heat, heat conduction through the hot support, the use of temperature sensors to collect the temperature difference on the support of the circuit, the use of single-chip Measure the change of temperature difference, and then calculate the average power of terahertz wave to be measured. Compared with other terahertz probes, the structure is simple and the cost is relatively low, and the relative average power of terahertz measurement is relatively high, reaching about 1.5W, which is suitable for the measurement of high-power microwave power.