high frequency transmitter

简明释义

高频发射机

英英释义

例句

1.The high frequency transmitter is crucial for maritime communication.

这个高频发射器对海洋通信至关重要。

2.The radio station uses a high frequency transmitter to broadcast its signals over long distances.

这家广播电台使用一个高频发射器来远距离广播信号。

3.The military relies on a high frequency transmitter for secure communication in remote areas.

军方依赖于一个高频发射器在偏远地区进行安全通信。

4.During the experiment, the scientists tested the efficiency of the high frequency transmitter in transmitting data.

在实验中，科学家们测试了高频发射器在数据传输中的效率。

5.Amateur radio operators often build their own high frequency transmitters for personal use.

业余无线电爱好者经常为个人使用自己搭建高频发射器。

作文

In the world of communication technology, the term high frequency transmitter refers to a device that is capable of transmitting signals at high frequencies, typically in the range of 3 to 30 megahertz. These transmitters play a crucial role in various applications, including radio broadcasting, amateur radio, and even in some military communications. Understanding how a high frequency transmitter works can provide insights into the broader field of telecommunications and its impact on society.The basic principle behind a high frequency transmitter involves the modulation of a carrier wave with the information signal that needs to be transmitted. This modulation can take various forms, such as amplitude modulation (AM) or frequency modulation (FM). Once modulated, the carrier wave is amplified and sent out through an antenna, where it propagates through the air as electromagnetic waves. These waves can then be received by compatible receivers, which demodulate the signal to retrieve the original information.One of the key advantages of using a high frequency transmitter is its ability to cover long distances. High-frequency signals can reflect off the ionosphere, allowing them to travel beyond the horizon. This characteristic makes them particularly useful for long-range communication, especially in remote areas where other forms of communication might not be feasible. For instance, amateur radio operators often rely on high frequency transmitters to connect with others across vast distances, sometimes even around the globe.Moreover, high frequency transmitters are essential in emergency communication scenarios. During natural disasters or other emergencies, traditional communication infrastructure may fail. In such cases, high frequency transmitters can provide a reliable means of communication, allowing rescue teams to coordinate their efforts and keep in touch with affected individuals. The resilience and effectiveness of these transmitters in challenging conditions highlight their importance in modern communication systems.However, operating a high frequency transmitter comes with its challenges. The quality of transmission can be affected by various factors, including atmospheric conditions, interference from other signals, and the physical terrain. Operators must have a good understanding of these variables to optimize their communication efforts. Additionally, regulations governing the use of high frequency transmitters vary by country, requiring operators to obtain licenses and adhere to specific guidelines to ensure that they do not interfere with other communications.In conclusion, the high frequency transmitter is a vital component of the telecommunications landscape. Its ability to transmit signals over long distances makes it invaluable for both everyday communication and emergency situations. By understanding the principles behind these devices and their applications, we can appreciate the significant role they play in connecting people and facilitating information exchange in our increasingly interconnected world. As technology continues to evolve, the role of high frequency transmitters will likely adapt, but their fundamental importance in communication will remain unchanged.

在通信技术的世界中，短语高频发射器指的是一种能够以高频率（通常在3到30兆赫兹范围内）传输信号的设备。这些发射器在各种应用中发挥着至关重要的作用，包括广播、业余无线电，甚至某些军事通信。理解高频发射器的工作原理可以为我们提供对电信领域及其对社会影响的深入见解。高频发射器的基本原理涉及将信息信号调制到载波波上，这个载波波需要被传输。这种调制可以采取多种形式，例如幅度调制（AM）或频率调制（FM）。一旦调制完成，载波波就会被放大并通过天线发送出去，在空气中以电磁波的形式传播。这些波可以被兼容的接收器接收，接收器再对信号进行解调，以恢复原始信息。使用高频发射器的一个主要优势是它能够覆盖长距离。高频信号可以反射到电离层，使其能够超越地平线传播。这一特性使得它们在长途通信中尤其有用，特别是在其他通信方式可能不可行的偏远地区。例如，业余无线电操作员通常依赖于高频发射器与其他人建立联系，有时甚至可以跨越全球。此外，高频发射器在紧急通信场景中至关重要。在自然灾害或其他紧急情况下，传统的通信基础设施可能会失效。在这种情况下，高频发射器可以提供可靠的通信手段，使救援队能够协调工作并与受影响的个人保持联系。这些发射器在困难条件下的韧性和有效性突显了它们在现代通信系统中的重要性。然而，操作高频发射器也面临一些挑战。传输质量可能受到多种因素的影响，包括气象条件、其他信号的干扰和物理地形。操作员必须对这些变量有良好的理解，以优化他们的通信努力。此外，各国对高频发射器的使用规定不同，要求操作员获得许可证并遵循特定指南，以确保他们不会干扰其他通信。总之，高频发射器是电信领域的重要组成部分。其长距离传输信号的能力使其在日常通信和紧急情况下都具有不可或缺的价值。通过理解这些设备的原理及其应用，我们可以更好地欣赏它们在连接人们和促进信息交流方面所发挥的重要作用。在技术不断发展的背景下，高频发射器的角色可能会适应变化，但它们在通信中的基本重要性将保持不变。