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本文研究探讨了大学物理课程与无线电通信相关专业课程之间的衔接问题。首先,梳理了热噪声研究的历史脉络,明确了噪声温度概念的起源,并给出了噪声温度的一般性定义。其次,以天线作为电磁波换能器为切入点,结合黑体辐射理论与基尔霍夫热辐射定律,推导了天线热噪声功率谱密度的定量表达式。在揭示天线热噪声物理机制的基础上,阐述了天线噪声温度概念的构建逻辑与物理内涵。教学实践表明,将上述思路融入教学,加深了学生对相关物理知识的理解。本研究旨在深化学生对大学物理课程中黑体辐射理论的理解,同时为无线电通信专业课程的教学提供参考,通过将基础物理理论延伸至无线电通信领域,体现了基础物理课程在课程体系中的桥梁作用,有助于培养学生的跨学科综合素养与创新性思维能力。
Abstract：This paper investigates the connection between college physics courses and professional courses related to radio communication. First, it reviews the historical development of thermal noise research, clarifies the origin of the concept of noise temperature, and provides a general definition of noise temperature. Next, taking the antenna as an electromagnetic wave transducer, it derives the quantitative expression for the antenna thermal noise power spectral density by combining the theory of blackbody radiation with Kirchhoff's law of thermal radiation. Based on revealing the physical mechanism of antenna thermal noise, the paper elaborates on the logical construction and physical connotations of the concept of antenna noise temperature. Teaching practice has shown that integrating the above ideas into teaching deepens students' understanding of the relevant physical knowledge. This study aims to deepen students' understanding of the blackbody radiation theory in college physics courses and provide a reference for the teaching of radio communication professional courses. By extending the basic physical theory to the field of radio communication, it demonstrates the bridging role of basic physics courses in the curriculum system, which is conducive to cultivating students' interdisciplinary comprehensive literacy and innovative thinking abilities.
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基本信息:
中图分类号:G642.3;O4-4
引用信息:
[1]李智强,张介秋,王伟宇,等.以黑体辐射与天线噪声温度为例的大学物理与专业课程衔接研究[J].物理与工程,2025,35(06):35-40.