论文部分内容阅读
1928年,H.Nyquist指出随机起伏已是电子工程师必须重视的问题。然而,他的结果从来考虑过量子修正因数——Planck函数p(f)。从今天的高技术领域中的更短波长、更低温度的发展趋势看,Planek函数在许多公式中均出现,因它是按量子力学原理推导的。本文从量子物理学的角度阐述了一些有关微波噪声理论问题的来龙去脉和一些重要公式的来由。自旋系统的噪声来自自发发射,而在推导时还必须考虑零点能量。本文强调了噪声的量子处理的严格性。
In 1928, H. Nyquist pointed out that random fluctuation is a problem that electronic engineers must pay attention to. However, his results have always considered the quantum correction factor - Planck’s function p (f). From the trend of shorter wavelengths and lower temperatures in today’s high-tech fields, the Planek function appears in many formulas because it is derived from quantum mechanics. This essay elaborates some of the ins and outs of some important theoretical problems related to microwave noise from the perspective of quantum physics. Spin system noise comes from spontaneous emission, and in derivation must also consider the zero point energy. This article emphasizes the rigor of quantum noise processing.