frequency-modulated transmitter

简明释义

调频发射机

英英释义

例句

1.To reduce interference, the frequency-modulated transmitter uses advanced filtering techniques.

为了减少干扰，频率调制发射器采用了先进的滤波技术。

2.The frequency-modulated transmitter enables better sound quality over long distances.

频率调制发射器使得在长距离传输中获得更好的音质。

3.In amateur radio, a frequency-modulated transmitter can help improve communication clarity.

在业余无线电中，频率调制发射器可以帮助提高通信清晰度。

4.Engineers often test the range of a frequency-modulated transmitter during field trials.

工程师们通常在现场试验中测试频率调制发射器的范围。

5.The radio station uses a frequency-modulated transmitter to broadcast high-quality audio signals.

这个广播电台使用频率调制发射器来广播高质量的音频信号。

作文

In the world of telecommunications, the role of a frequency-modulated transmitter is crucial for ensuring clear and effective communication. A frequency-modulated transmitter is a device that encodes information in a carrier wave by varying its frequency. This modulation technique is widely used in radio broadcasting, television transmission, and even in two-way radios. The primary advantage of using a frequency-modulated transmitter is its ability to provide high-quality sound and resist interference from other signals. When we consider how a frequency-modulated transmitter works, it is essential to understand the basic principles of frequency modulation (FM). In FM, the amplitude of the carrier signal remains constant while the frequency changes according to the input signal. This means that the information is carried in the frequency variations rather than in amplitude changes, which can be more susceptible to noise and distortion.One of the most common applications of a frequency-modulated transmitter is in FM radio broadcasting. When a radio station transmits music or talk shows, it uses a frequency-modulated transmitter to encode the audio signals into a frequency-modulated wave. Listeners tune their radios to a specific frequency, allowing them to receive the encoded signals. Because FM is less affected by noise, listeners often enjoy clearer sound quality compared to amplitude modulation (AM) broadcasting.Moreover, the frequency-modulated transmitter is not limited to radio waves. It is also utilized in television broadcasting, where both audio and video signals are transmitted via FM. In this case, the video signal is typically modulated onto a carrier wave using a different frequency than that used for the audio signal. This allows both signals to coexist without interference, providing viewers with a seamless experience.In addition to broadcasting, frequency-modulated transmitters are extensively used in various communication systems, including mobile phones, walkie-talkies, and other wireless devices. The ability of FM to maintain signal integrity over long distances makes it ideal for these applications. For instance, when a user speaks into a walkie-talkie, the device’s frequency-modulated transmitter converts the voice into a frequency-modulated signal that can travel over the airwaves to another device, where it is demodulated back into sound.Furthermore, the advancements in technology have led to the development of digital frequency-modulated transmitters, which offer even greater efficiency and clarity. These modern transmitters can handle multiple channels simultaneously, allowing for more efficient use of the available bandwidth. As a result, they play a vital role in the growing demand for wireless communication in today’s digital age.In conclusion, the frequency-modulated transmitter is a fundamental component of modern communication systems. Its ability to modulate frequency rather than amplitude allows for clearer sound quality and greater resistance to interference. From radio and television broadcasting to mobile communication, the impact of frequency-modulated transmitters is profound and far-reaching. As technology continues to evolve, the importance of these devices will only grow, shaping the future of how we communicate and connect with one another.

在电信领域，频率调制发射机的作用对于确保清晰有效的通信至关重要。频率调制发射机是一种通过改变载波的频率来编码信息的设备。这种调制技术广泛应用于广播、电视传输甚至对讲机中。使用频率调制发射机的主要优点是能够提供高质量的声音，并抵御其他信号的干扰。当我们考虑频率调制发射机的工作原理时，理解频率调制（FM）的基本原理至关重要。在FM中，载波信号的幅度保持不变，而频率根据输入信号变化。这意味着信息以频率变化的形式传递，而不是幅度变化，这样可以减少噪声和失真的影响。频率调制发射机最常见的应用之一是在FM广播中。当一个广播电台播放音乐或谈话节目时，它使用频率调制发射机将音频信号编码为频率调制波。听众将收音机调到特定的频率，从而接收编码信号。由于FM不易受到噪声的影响，听众通常享受比幅度调制（AM）广播更清晰的音质。此外，频率调制发射机不仅限于无线电波。它还用于电视广播，在这种情况下，音频和视频信号通过FM进行传输。在这种情况下，视频信号通常被调制到一个载波波上，使用与音频信号不同的频率。这允许两个信号共存而不干扰，提供给观众无缝的体验。除了广播，频率调制发射机还广泛应用于各种通信系统，包括手机、对讲机和其他无线设备。FM在长距离内保持信号完整性的能力使其成为这些应用的理想选择。例如，当用户对着对讲机说话时，设备的频率调制发射机将声音转换为可以通过无线电波传播的频率调制信号，然后在另一台设备中解调回声音。此外，技术的进步导致了数字频率调制发射机的发展，这些发射机提供了更高的效率和清晰度。这些现代发射机可以同时处理多个频道，从而更有效地利用可用带宽。因此，它们在当今数字时代日益增长的无线通信需求中发挥着至关重要的作用。总之，频率调制发射机是现代通信系统的基本组成部分。它通过调制频率而非幅度的能力，使声音质量更清晰，抗干扰能力更强。从广播和电视到移动通信，频率调制发射机的影响深远而广泛。随着技术的不断发展，这些设备的重要性只会增加，塑造我们沟通和连接彼此的未来。