skin depth

简明释义

趋肤深度

英英释义

例句

1.Metals have a much smaller skin depth compared to insulators at high frequencies.

在高频下，金属的表皮深度远小于绝缘体。

2.The skin depth varies with frequency; higher frequencies result in smaller depths.

表皮深度随频率变化；更高的频率导致更小的深度。

3.When designing a transformer, engineers must consider the skin depth to minimize energy losses.

在设计变压器时，工程师必须考虑到表皮深度以最小化能量损耗。

4.The concept of skin depth is crucial in understanding how electromagnetic waves penetrate materials.

理解电磁波如何穿透材料的过程，表皮深度的概念至关重要。

5.In radio frequency applications, the skin depth determines the thickness of the conductor needed for efficient signal transmission.

在射频应用中，表皮深度决定了高效信号传输所需导体的厚度。

作文

In the realm of electromagnetism, the concept of skin depth plays a crucial role in understanding how electromagnetic waves interact with conductive materials. The term skin depth refers to the distance into a conductor at which the electromagnetic wave's amplitude decreases to approximately 37% of its original value. This phenomenon occurs due to the skin effect, which is the tendency of alternating current (AC) to distribute itself unevenly within a conductor, concentrating near the surface. As frequency increases, the skin depth decreases, resulting in a higher concentration of current at the surface of the conductor. This characteristic has significant implications in various applications, including electrical engineering and telecommunications.One practical example of skin depth can be observed in power transmission lines. High-voltage AC transmission lines often utilize conductors that are designed to minimize energy loss. By understanding the skin depth, engineers can select appropriate materials and dimensions for the conductors to ensure efficient power delivery. For instance, using larger diameter wires can help accommodate the reduced skin depth at higher frequencies, allowing for more effective current flow without excessive resistive losses.Moreover, the concept of skin depth is not limited to just electrical engineering; it also finds applications in fields such as radio frequency (RF) technology and medical imaging. In RF applications, antennas need to be designed with an awareness of skin depth to optimize their performance. Similarly, in medical imaging techniques like magnetic resonance imaging (MRI), the skin depth influences the penetration of radio waves into human tissue, affecting image quality and resolution.Understanding skin depth also raises important considerations regarding material selection. Different materials exhibit varying levels of conductivity, which directly impacts the skin depth. For example, copper, known for its excellent conductivity, has a smaller skin depth compared to aluminum when subjected to the same frequency. This difference means that in high-frequency applications, copper conductors will be more efficient than aluminum ones, leading to better overall performance.In conclusion, the concept of skin depth is vital for anyone working with alternating currents and electromagnetic waves. Its implications extend across various fields, from electrical engineering to medical imaging, highlighting the importance of understanding how currents behave in different materials. By grasping the principles of skin depth, professionals can make informed decisions about material choices and design strategies, ultimately optimizing performance and efficiency in their respective applications. As technology continues to advance, the relevance of skin depth will only grow, making it an essential topic for study and application in the ever-evolving landscape of electromagnetism.

在电磁学领域，skin depth的概念在理解电磁波如何与导电材料相互作用方面发挥着至关重要的作用。术语skin depth指的是在导体内部，电磁波的幅度降低到其原始值的约37%的距离。这种现象是由于皮肤效应造成的，皮肤效应是交变电流（AC）在导体内不均匀分布的倾向，集中在表面附近。随着频率的增加，skin depth减小，导致电流在导体表面的浓度增加。这一特性在电气工程和电信等多个应用中具有重要意义。skin depth的一个实际例子可以在高压输电线路中观察到。高压交流输电线路通常使用设计以最小化能量损失的导体。通过理解skin depth，工程师可以选择适当的材料和导体尺寸，以确保高效的电力传输。例如，使用更大直径的导线可以帮助适应在高频率下减少的skin depth，从而允许电流在没有过度阻抗损失的情况下更有效地流动。此外，skin depth的概念不仅限于电气工程；它还在射频（RF）技术和医学成像等领域找到了应用。在射频应用中，天线需要在设计时考虑skin depth以优化其性能。同样，在医学成像技术如磁共振成像（MRI）中，skin depth影响无线电波在人体组织中的穿透，进而影响图像质量和分辨率。理解skin depth还引发了关于材料选择的重要考虑。不同材料表现出不同的导电性，这直接影响skin depth。例如，铜以其优良的导电性著称，其在相同频率下的skin depth比铝小。这一差异意味着在高频应用中，铜导体的效率将优于铝导体，从而导致更好的整体性能。总之，skin depth的概念对于任何与交变电流和电磁波打交道的人来说都是至关重要的。它的影响跨越多个领域，从电气工程到医学成像，突显了理解电流在不同材料中行为的重要性。通过掌握skin depth的原理，专业人士可以就材料选择和设计策略做出明智的决策，最终优化其各自应用中的性能和效率。随着技术的不断进步，skin depth的相关性只会增加，使其成为在电磁学不断发展的背景下，值得研究和应用的一个重要主题。