hertz dipole

简明释义

赫兹偶极子

英英释义

例句

1.Using a hertz dipole can improve the signal strength in wireless communication.

使用赫兹偶极子可以提高无线通信中的信号强度。

2.In electromagnetic theory, the hertz dipole is often used as a fundamental model.

在电磁理论中，赫兹偶极子通常被用作基本模型。

3.Scientists measured the efficiency of the hertz dipole in various frequencies.

科学家测量了不同频率下赫兹偶极子的效率。

4.The antenna design for the radio transmitter was based on a simple hertz dipole.

这个无线电发射机的天线设计是基于一个简单的赫兹偶极子。

5.The radiation pattern of a hertz dipole antenna is omnidirectional.

一个赫兹偶极子天线的辐射模式是全向的。

作文

The concept of a hertz dipole is fundamental in the field of electromagnetism and antenna theory. A hertz dipole refers to a simple antenna model that consists of two conductive elements, typically of equal length, which are aligned in a straight line. This type of antenna is named after Heinrich Hertz, the physicist who first demonstrated the existence of electromagnetic waves. Understanding the hertz dipole is crucial for anyone studying radio frequency (RF) engineering or telecommunications. In essence, a hertz dipole operates by creating an oscillating electric field that radiates electromagnetic waves into the surrounding environment. When an alternating current flows through the dipole, it generates a varying electric field, which in turn produces a magnetic field. The interaction between these two fields enables the transmission of signals over long distances, making the hertz dipole an essential component in various communication systems.The length of a hertz dipole is typically half the wavelength of the frequency it is designed to transmit or receive. For example, if the operating frequency is 300 MHz, the corresponding wavelength is one meter, meaning the ideal length for the hertz dipole would be 0.5 meters. This relationship highlights the importance of understanding wave properties in designing effective antennas. One of the key advantages of the hertz dipole is its simplicity. It is easy to construct and can be made from readily available materials. Additionally, its radiation pattern is omnidirectional in the plane perpendicular to the axis of the dipole, allowing for effective signal distribution in multiple directions. However, it also has limitations; for instance, the hertz dipole is not very efficient at low frequencies due to its size relative to the wavelength, leading to challenges in certain applications.In practical applications, the hertz dipole is often used as a reference antenna for measuring the performance of other types of antennas. Its predictable radiation pattern and impedance characteristics make it a valuable tool in antenna testing and design. Engineers can compare the performance of more complex antennas against the baseline established by the hertz dipole, ensuring optimal functionality in real-world scenarios.Moreover, advancements in technology have led to the development of various modifications and enhancements to the basic hertz dipole. For instance, folded dipoles and Yagi-Uda antennas incorporate multiple elements to improve gain and directivity, while still relying on the fundamental principles established by the original hertz dipole. These innovations demonstrate how a simple concept can evolve to meet the demands of modern communication systems.In conclusion, the hertz dipole is a cornerstone of antenna theory and electromagnetic wave propagation. Its straightforward design and effective performance make it an invaluable resource for engineers and researchers alike. By grasping the principles behind the hertz dipole, one can better understand the complexities of modern wireless communication technologies and their underlying physics. As we continue to advance in the field of telecommunications, the legacy of the hertz dipole will undoubtedly remain influential, guiding future innovations in antenna design and wireless communication strategies.

‘hertz dipole’的概念在电磁学和天线理论领域中是基础性的。‘hertz dipole’指的是一种简单的天线模型，由两个导电元件组成，通常长度相等，并且直线排列。这种类型的天线以海因里希·赫兹命名，他是第一位证明电磁波存在的物理学家。理解‘hertz dipole’对于任何学习射频（RF）工程或电信的人来说都是至关重要的。从本质上讲，‘hertz dipole’通过创建一个振荡的电场来辐射电磁波到周围环境。当交流电流通过偶极子时，它会产生一个变化的电场，进而产生一个磁场。这两个场之间的相互作用使得信号能够在长距离上传输，使得‘hertz dipole’成为各种通信系统中的基本组成部分。‘hertz dipole’的长度通常是其设计传输或接收频率的半波长。例如，如果工作频率为300 MHz，则相应的波长为1米，这意味着理想的‘hertz dipole’长度为0.5米。这种关系突显了在设计有效天线时理解波属性的重要性。‘hertz dipole’的一个关键优点是其简单性。它易于构造，可以用现成的材料制作。此外，其辐射模式在偶极子的轴线垂直平面内是全向的，允许在多个方向上有效分配信号。然而，它也有局限性；例如，由于其相对于波长的大小，‘hertz dipole’在低频下的效率不高，这在某些应用中会导致挑战。在实际应用中，‘hertz dipole’常用作测量其他类型天线性能的参考天线。其可预测的辐射模式和阻抗特性使其成为天线测试和设计的宝贵工具。工程师可以将更复杂天线的性能与‘hertz dipole’建立的基准进行比较，以确保在实际场景中的最佳功能。此外，技术的进步导致对基本‘hertz dipole’进行各种修改和增强。例如，折叠偶极子和八木天线结合了多个元件，以提高增益和定向性，同时仍依赖于原始‘hertz dipole’建立的基本原理。这些创新展示了一个简单的概念如何演变以满足现代通信系统的需求。总之，‘hertz dipole’是天线理论和电磁波传播的基石。其简单的设计和有效的性能使其成为工程师和研究人员都非常重要的资源。通过掌握‘hertz dipole’背后的原理，人们可以更好地理解现代无线通信技术及其基础物理学的复杂性。随着我们在电信领域的不断进步，‘hertz dipole’的遗产无疑将继续发挥影响力，为未来天线设计和无线通信策略的创新提供指导。