radio antenna

简明释义

无线电天线

英英释义

例句

1.The technician installed a new radio antenna to improve the signal quality.

技术员安装了一个新的无线电天线以改善信号质量。

2.She climbed up to fix the radio antenna that had been damaged in the wind.

她爬上去修理那根在风中受损的无线电天线。

3.We need to adjust the radio antenna for better reception during the storm.

我们需要调整一下无线电天线以在暴风雨期间获得更好的接收效果。

4.Installing a high-gain radio antenna can significantly enhance your communication range.

安装一个高增益的无线电天线可以显著增强你的通信范围。

5.The radio antenna on the roof helps us connect to distant radio stations.

屋顶上的无线电天线帮助我们连接到遥远的广播电台。

作文

In the modern world, communication has become an integral part of our daily lives. One of the key components that enable effective communication over long distances is the radio antenna. A radio antenna (无线电天线) is a device that transmits and receives electromagnetic waves, allowing for the exchange of information through radio signals. This technology has evolved significantly since its inception, playing a crucial role in various fields such as broadcasting, telecommunications, and even space exploration.The history of the radio antenna can be traced back to the late 19th century when inventors like Heinrich Hertz demonstrated the existence of electromagnetic waves. Hertz's experiments laid the foundation for the development of radio technology. Subsequent advancements led to the creation of different types of antennas, each designed for specific purposes. For instance, dipole antennas are commonly used for broadcasting, while parabolic antennas are essential for satellite communications.Understanding how a radio antenna functions is vital for anyone interested in the field of communication technology. Essentially, a radio antenna works by converting electrical energy into electromagnetic waves and vice versa. When a radio transmitter sends out a signal, the radio antenna emits these waves into the surrounding environment. Conversely, when a radio receiver picks up these waves, the radio antenna captures them and converts them back into electrical signals that can be processed by audio equipment.The design of a radio antenna is influenced by several factors, including frequency, range, and the intended application. For example, a television station may use a tall, powerful radio antenna to broadcast signals over a wide area, while a personal radio might utilize a smaller, portable antenna for localized communication. The efficiency of an antenna is often measured by its gain, which indicates how well it can direct radio waves in a specific direction.In recent years, the advent of digital technology has transformed the landscape of radio communication. Digital signals require more precise transmission methods, leading to innovations in radio antenna design. Modern antennas can now support a broader range of frequencies and improve signal quality, ensuring clearer communication. Furthermore, the integration of antennas into devices such as smartphones and tablets has made communication more accessible than ever before.The importance of radio antennas extends beyond personal communication. They are also critical in emergency situations, where reliable communication channels can save lives. During natural disasters, for example, radio antennas facilitate the dissemination of vital information to affected populations, helping them to stay informed and safe.In conclusion, the radio antenna (无线电天线) is a fundamental component of modern communication systems. Its ability to transmit and receive signals over vast distances has revolutionized the way we connect with one another. As technology continues to advance, the radio antenna will undoubtedly evolve, further enhancing our ability to communicate effectively in an increasingly interconnected world. Understanding the principles behind radio antennas is essential for anyone looking to delve into the fascinating realm of communication technology.

在现代世界中，通信已成为我们日常生活中不可或缺的一部分。使远距离有效沟通成为可能的关键组件之一就是无线电天线。无线电天线（radio antenna）是一种传输和接收电磁波的设备，允许通过无线电信号进行信息交换。这项技术自诞生以来发生了显著的变化，在广播、电信甚至太空探索等多个领域发挥着至关重要的作用。无线电天线的历史可以追溯到19世纪末，当时像海因里希·赫兹这样的发明家证明了电磁波的存在。赫兹的实验为无线电技术的发展奠定了基础。随后的进步导致了不同类型天线的创建，每种天线都旨在特定用途。例如，偶极天线通常用于广播，而抛物面天线则是卫星通信的必需品。理解无线电天线的工作原理对于任何对通信技术感兴趣的人来说都是至关重要的。基本上，无线电天线通过将电能转化为电磁波并反之亦然来工作。当无线电发射器发出信号时，无线电天线将这些波发射到周围环境中。相反，当无线电接收器接收到这些波时，无线电天线捕获它们并将其转换回可以由音频设备处理的电信号。无线电天线的设计受到多个因素的影响，包括频率、范围和预期应用。例如，电视台可能会使用高大、强大的无线电天线在广泛区域内广播信号，而个人无线电可能会利用较小、便携的天线进行局部通信。天线的效率通常通过增益来衡量，增益指示其在特定方向上引导无线电波的能力。近年来，数字技术的出现改变了无线电通信的格局。数字信号需要更精确的传输方法，从而导致无线电天线设计的创新。现代天线现在可以支持更广泛的频率并改善信号质量，确保更清晰的通信。此外，将天线集成到智能手机和平板电脑等设备中，使通信变得比以往任何时候都更加便捷。无线电天线的重要性不仅限于个人通信。在紧急情况下，它们也是至关重要的，可靠的通信渠道可以拯救生命。例如，在自然灾害期间，无线电天线促进了向受影响人群传播重要信息，帮助他们保持知情和安全。总之，无线电天线（radio antenna）是现代通信系统的基本组成部分。它在广阔距离内传输和接收信号的能力彻底改变了我们彼此联系的方式。随着技术的不断进步，无线电天线无疑会不断发展，进一步增强我们在日益互联的世界中有效沟通的能力。了解无线电天线背后的原理对于任何希望深入了解通信技术迷人领域的人来说都是必不可少的。