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首页> 外文会议>Proceedings of the 2016 IEEE National Aerospace and Electronics Conference >Accurate MM-wave-to-THz power measurements with large-area pyroelectric detectors
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Accurate MM-wave-to-THz power measurements with large-area pyroelectric detectors

机译：大面积热电探测器可精确测量MM波至THz功率

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摘要

We present an improved method for measuring power at ~100 GHz and above using a large-area (5-mm diam) LiTaO3 pyroelectric detector. The pyroelectric element is packaged in a lid-free TO-5 can, which in turn is mated to one end of a 1/2-inch-diam brass tube whose opposite end is flared for improved coupling efficiency. This “light-pipe”-like arrangement is cross-calibrated against a thermistor-based waveguide Anritsu ML83A power sensor using a 104-GHz Gunn oscillator and precision attenuator. It also stabilizes the pyroelectric element against background (IR) radiation and air currents. The resulting power detector is useful in the ~10-nW-to-1-uW region where waveguide power sensors do not operate and free-space sensors like Golay cells and pyroelectrics have always been uncalibrated and unstable.
机译：我们提出了一种使用大面积（直径为5毫米）LiTaO3热释电探测器来测量〜100 GHz及以上功率的改进方法。热电元件封装在无盖的TO-5罐中，该罐又与1/2英寸直径的黄铜管的一端配合，后者的另一端张开以提高耦合效率。使用104 GHz Gunn振荡器和精密衰减器，将这种类似“光导管”的布置与基于热敏电阻的波导Anritsu ML83A功率传感器进行交叉校准。它还可以使热电元件免受背景（IR）辐射和气流的影响。所得的功率检测器在波导管功率传感器不工作且Golay电池和热释电之类的自由空间传感器始终未经校准且不稳定的〜10-nW至1-uW区域中很有用。

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