antenna array

简明释义

天线阵

英英释义

例句

1.By using a phased antenna array, the direction of the beam can be electronically steered.

通过使用相控天线阵列，波束的方向可以被电子控制。

2.The satellite communication system uses a large antenna array to transmit signals effectively.

卫星通信系统使用一个大型天线阵列来有效地传输信号。

3.In modern mobile networks, an antenna array can enhance the coverage and capacity of the network.

在现代移动网络中，天线阵列可以增强网络的覆盖范围和容量。

4.Researchers are developing a new antenna array design that improves signal reception in urban environments.

研究人员正在开发一种新的天线阵列设计，以改善城市环境中的信号接收。

5.The antenna array used in radar systems allows for precise tracking of moving objects.

雷达系统中使用的天线阵列能够精确跟踪移动物体。

作文

In the realm of telecommunications and broadcasting, the term antenna array refers to a configuration of multiple antennas working together to improve signal reception and transmission. This technology has become increasingly significant in our modern world, where connectivity is paramount. The concept of an antenna array can be understood through its various applications, advantages, and the underlying principles that govern its operation.An antenna array consists of two or more antennas arranged in a specific geometric pattern. These antennas can be identical or different, and they work in unison to create a composite radiation pattern that enhances the overall performance. One of the primary benefits of using an antenna array is the ability to focus the transmitted signal in a particular direction, which increases the effective range and quality of communication.For instance, in mobile telecommunications, antenna arrays are employed in base stations to ensure that signals are transmitted efficiently over long distances. By directing the signal towards the intended user, these arrays minimize interference and enhance the clarity of the communication. Furthermore, antenna arrays are also utilized in radar systems, where they help in detecting objects by emitting and receiving signals more effectively than a single antenna could.The design of an antenna array involves careful consideration of several factors, including the spacing between antennas, their orientation, and the frequency of operation. These parameters significantly influence the array's beamwidth and gain. Beamwidth refers to the angle over which the array can effectively transmit or receive signals, while gain measures the increase in signal strength achieved by the array compared to a single antenna.Moreover, antenna arrays can be classified into two main types: linear and planar. Linear arrays consist of antennas arranged in a straight line, while planar arrays have antennas placed in a two-dimensional grid. Each type has its own set of advantages and is suited for different applications. For example, linear arrays are often used in long-range communication, while planar arrays are common in satellite communications, where coverage over a broader area is essential.The advancements in digital signal processing have further enhanced the capabilities of antenna arrays. Techniques such as beamforming allow for dynamic adjustment of the array's radiation pattern, enabling it to adapt to changing environments and user demands. This adaptability is crucial in urban settings, where buildings and other structures can obstruct signals, leading to variations in signal quality.In conclusion, the antenna array is a vital component in modern communication systems. Its ability to improve signal strength and directionality makes it indispensable in various fields, from mobile networks to satellite communications. As technology continues to evolve, the role of antenna arrays will likely expand, paving the way for even more efficient and reliable communication systems. Understanding the principles behind antenna arrays not only sheds light on their importance but also highlights the ongoing innovations in the field of telecommunications, ensuring that we remain connected in our increasingly digital world.

在电信和广播领域，术语天线阵列指的是多个天线共同工作以改善信号接收和传输的配置。这项技术在我们现代世界中变得越来越重要，因为连接性至关重要。天线阵列的概念可以通过其各种应用、优势以及支配其操作的基本原理来理解。一个天线阵列由两个或更多天线按照特定几何模式排列而成。这些天线可以是相同的或不同的，它们共同作用以创建一个复合辐射模式，从而增强整体性能。使用天线阵列的主要好处之一是能够将发射信号集中在特定方向，从而增加通信的有效范围和质量。例如，在移动电信中，天线阵列被用于基站，以确保信号高效地传输到远距离。通过将信号指向预期用户，这些阵列减少了干扰，提高了通信的清晰度。此外，天线阵列还在雷达系统中得到应用，通过比单个天线更有效地发射和接收信号来帮助探测物体。天线阵列的设计涉及对几个因素的仔细考虑，包括天线之间的间距、它们的方向以及工作频率。这些参数显著影响阵列的波束宽度和增益。波束宽度是指阵列能够有效地传输或接收信号的角度，而增益则衡量与单个天线相比，阵列所实现的信号强度的增加。此外，天线阵列可以分为两种主要类型：线性阵列和平面阵列。线性阵列由直线排列的天线组成，而平面阵列则有放置在二维网格中的天线。每种类型都有其自身的优点，并适用于不同的应用。例如，线性阵列通常用于长距离通信，而平面阵列在卫星通信中很常见，因为在更广泛的区域内覆盖是必需的。数字信号处理的进步进一步增强了天线阵列的能力。波束形成等技术允许动态调整阵列的辐射模式，使其能够适应不断变化的环境和用户需求。这种适应性在城市环境中尤为重要，因为建筑物和其他结构可能会阻碍信号，导致信号质量的变化。总之，天线阵列是现代通信系统中的重要组成部分。它提高信号强度和方向性的能力使其在从移动网络到卫星通信的各个领域中不可或缺。随着技术的不断发展，天线阵列的作用可能会扩大，为更高效、更可靠的通信系统铺平道路。了解天线阵列背后的原理不仅揭示了它们的重要性，还突显了电信领域的持续创新，确保我们在日益数字化的世界中保持连接。