波导低温噪声源w波段的输出噪声温度

2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) Pub Date : 2015-11-12 DOI:10.1109/IRMMW-THZ.2015.7327821

T. Kang, Jeong-Hwan Kim, J. Kwon, N. Kang

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引用次数: 0

摘要

讨论了一种用于w波段噪声温度标准的波导低温噪声源(CNS)。CNS由噪声采集喇叭、空腔、电磁吸收器和液氮容器组成。波导CNS的输出噪声温度(NT)由吸收器的电磁辐射和喇叭的耗散损耗得到。波导CNS和环境温度噪声源作为参考噪声源。为了校准未知噪声源，用专用辐射计测量了来自中枢神经系统的热噪声、环境温度噪声源和未知噪声源。给出了一种商用二极管噪声源的测量结果。

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Output noise temperature of a waveguide cryogenic noise source in W-band

A waveguide cryogenic noise source (CNS) is discussed for noise temperature standards in W-band. The CNS consists of a noise pickup horn, a cavity, an electromagnetic absorber, and a liquid nitrogen container. The output noise temperature (NT) of the waveguide CNS is obtained from electromagnetic radiation of the absorber and the dissipative loss of horn. The waveguide CNS and an ambient temperature noise source serve as reference noise sources. To calibrate an unknown noise source thermal noises emanated from the CNS, the ambient temperature noise source, and the unknown noise source are measured by a dedicated radiometer. Measurement results of a commercial diode noise source are presented.

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2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)

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