antenna radiation resistance

简明释义

天线辐射电阻

英英释义

例句

1.A high antenna radiation resistance can lead to better energy radiation.

高天线辐射电阻可以导致更好的能量辐射。

2.The antenna radiation resistance affects the overall performance of the communication system.

这天线辐射电阻影响通信系统的整体性能。

3.During the testing phase, we measured the antenna radiation resistance of various models.

在测试阶段，我们测量了不同型号的天线辐射电阻。

4.The engineer calculated the antenna radiation resistance to optimize the signal strength.

工程师计算了天线辐射电阻以优化信号强度。

5.Understanding antenna radiation resistance is crucial for designing efficient antennas.

理解天线辐射电阻对设计高效天线至关重要。

作文

Antenna technology plays a crucial role in modern communication systems, and understanding the concept of antenna radiation resistance is essential for anyone involved in this field. The term antenna radiation resistance refers to the part of the antenna's input impedance that is associated with the radiation of electromagnetic waves. It is an important parameter because it determines how effectively an antenna can convert electrical power into radio waves. In simpler terms, antenna radiation resistance can be seen as the measure of how well an antenna can 'radiate' energy into space. When we talk about antennas, we often think about their design and shape, but the underlying physics is just as important. The antenna radiation resistance is influenced by various factors, including the antenna's size, shape, and the frequency of operation. For instance, a half-wave dipole antenna has a characteristic antenna radiation resistance of about 73 ohms at its resonant frequency. This means that when the antenna is properly matched to this resistance, it can radiate energy efficiently. However, if the antenna radiation resistance is not matched correctly to the transmission line, it can lead to reflections of the signal, resulting in reduced performance and potential damage to the transmitter. Therefore, engineers often use matching networks to ensure that the antenna radiation resistance aligns with the impedance of the rest of the system. Moreover, the antenna radiation resistance is not a constant value; it can vary with different operating conditions. For example, environmental factors such as nearby objects or changes in ground conductivity can affect the effective antenna radiation resistance. This variability is why testing and tuning are critical steps in antenna design and deployment. In practical applications, understanding antenna radiation resistance can help in optimizing antenna performance for different uses, whether it be for broadcasting, mobile communications, or satellite links. Engineers must take into account not only the theoretical aspects of antenna radiation resistance but also real-world considerations, such as the impact of surrounding structures and the intended coverage area. In conclusion, the concept of antenna radiation resistance is fundamental in the field of telecommunications and antenna design. It serves as a bridge between the theoretical principles of electromagnetism and practical applications in communication technology. By grasping the significance of antenna radiation resistance, professionals in the field can enhance the efficiency and effectiveness of their antenna systems, leading to improved communication capabilities across various platforms. As technology continues to advance, the importance of understanding these parameters will only grow, making it imperative for future engineers to master the intricacies of antenna radiation resistance and its implications in the ever-evolving landscape of wireless communication.

天线技术在现代通信系统中发挥着至关重要的作用，理解“天线辐射电阻”这一概念对任何从事该领域的人来说都是必不可少的。术语“天线辐射电阻”是指与电磁波辐射相关的天线输入阻抗的一部分。它是一个重要的参数，因为它决定了天线将电能转换为无线电波的有效性。简单来说，“天线辐射电阻”可以被视为天线将能量“辐射”到空间的能力的衡量标准。当我们谈论天线时，我们通常会想到它们的设计和形状，但基础物理学同样重要。“天线辐射电阻”受到多种因素的影响，包括天线的大小、形状和工作频率。例如，半波偶极子天线在其谐振频率下具有约73欧姆的特征“天线辐射电阻”。这意味着当天线与此电阻正确匹配时，它可以有效地辐射能量。然而，如果“天线辐射电阻”未能与传输线正确匹配，则可能导致信号反射，从而降低性能并可能损坏发射器。因此，工程师通常使用匹配网络来确保“天线辐射电阻”与系统其余部分的阻抗一致。此外，“天线辐射电阻”并不是一个恒定值；它可以随着不同的操作条件而变化。例如，环境因素，如附近的物体或地面导电性的变化，都会影响有效的“天线辐射电阻”。这种可变性就是为什么测试和调整是天线设计和部署中的关键步骤。在实际应用中，理解“天线辐射电阻”可以帮助优化天线在不同用途上的性能，无论是广播、移动通信还是卫星链接。工程师必须考虑“天线辐射电阻”的理论方面，也要考虑现实世界的因素，例如周围结构的影响和预期的覆盖区域。总之，“天线辐射电阻”的概念在电信和天线设计领域是基础性的。它在电磁学的理论原则与通信技术的实际应用之间架起了一座桥梁。通过掌握“天线辐射电阻”的意义，行业专业人士可以提高其天线系统的效率和有效性，从而改善各种平台上的通信能力。随着技术的不断进步，理解这些参数的重要性只会增加，这使得未来的工程师必须掌握“天线辐射电阻”的复杂性及其在无线通信不断发展的格局中的影响。