amplitude modulated carrier

简明释义

调幅载波

英英释义

例句

1.To improve sound quality, the technician adjusted the frequency of the amplitude modulated carrier.

为了提高音质，技术人员调整了幅度调制载波的频率。

2.Engineers often analyze the performance of an amplitude modulated carrier in various environmental conditions.

工程师们常常分析幅度调制载波在不同环境条件下的性能。

3.The radio station transmits its signal using an amplitude modulated carrier, which allows for clear audio reception.

该广播电台使用幅度调制载波传输信号，从而实现清晰的音频接收。

4.In many older televisions, the video signal is carried by an amplitude modulated carrier to ensure proper display.

在许多旧款电视中，视频信号通过幅度调制载波进行传输，以确保正确显示。

5.The amplitude modulated carrier is essential for transmitting information over long distances.

对于远距离信息传输，幅度调制载波是必不可少的。

作文

In the realm of telecommunications, the concept of an amplitude modulated carrier plays a crucial role in the transmission of information over various distances. This term refers to a specific type of signal that is generated by varying the amplitude of a carrier wave in accordance with the information signal that needs to be transmitted. The basic principle behind this technique is to encode the information onto a high-frequency wave, which allows for efficient transmission and reception. Understanding how an amplitude modulated carrier works can provide insights into the foundations of modern communication systems.The process begins with a carrier wave, which is a continuous waveform that has a constant amplitude and frequency. When we introduce an information signal—such as audio or video—this signal modulates the amplitude of the carrier wave. The result is a new waveform that varies in amplitude according to the instantaneous value of the information signal. This modulation enables the information to be transmitted over long distances without significant loss of quality.Historically, amplitude modulation (AM) was one of the first techniques used in radio broadcasting. AM radio stations utilize amplitude modulated carriers to transmit audio signals to listeners. The advantages of using AM include its simplicity and the ability to cover large areas with relatively low power. However, there are also disadvantages, such as susceptibility to noise and interference, which can degrade the quality of the received signal.As technology advanced, other modulation techniques emerged, such as frequency modulation (FM) and phase modulation (PM). While these methods offer improved resistance to noise and better sound quality, amplitude modulated carriers remain relevant, especially in certain applications where simplicity and cost-effectiveness are prioritized.In addition to radio broadcasting, amplitude modulated carriers are also employed in various forms of data transmission. For instance, in analog television broadcasting, the video signal is transmitted using AM techniques. Similarly, some forms of two-way radio communications utilize amplitude modulated carriers to facilitate clear voice transmission between users.The understanding of amplitude modulated carriers extends beyond just radio and television. In the field of electronics, engineers utilize this concept in designing circuits and systems that require the transmission of signals over distance. The principles of modulation are applied in various technologies, including satellite communications, mobile phones, and even some forms of internet data transfer.Moreover, advancements in digital communication have led to the development of more sophisticated modulation techniques. However, the fundamental principles of amplitude modulated carriers still serve as a foundation for these modern methods. As we continue to explore the possibilities of wireless communication, the legacy of amplitude modulated carriers remains significant, reminding us of the importance of understanding the basics of signal transmission.In conclusion, the term amplitude modulated carrier encapsulates a vital aspect of communication technology that has evolved over the years. Its application in various fields demonstrates the enduring relevance of this concept in our increasingly connected world. By grasping the principles behind amplitude modulated carriers, we gain a deeper appreciation for the technologies that enable us to communicate effectively across vast distances.

在电信领域，幅度调制载波的概念在信息传输中起着至关重要的作用。这个术语指的是通过根据需要传输的信息信号变化载波波的幅度而生成的一种特定类型的信号。这一技术的基本原理是将信息编码到高频波上，从而实现高效的传输和接收。理解幅度调制载波的工作原理可以为我们提供对现代通信系统基础的洞察。这一过程始于一个载波波，它是一个具有恒定幅度和频率的连续波形。当我们引入一个信息信号（例如音频或视频）时，这个信号会调制载波波的幅度。结果是一个新的波形，其幅度根据信息信号的瞬时值而变化。这种调制使得信息能够在长距离上传输而不会显著损失质量。历史上，幅度调制（AM）是最早用于广播的技术之一。AM广播电台利用幅度调制载波将音频信号传输给听众。使用AM的优点包括其简单性以及用相对低的功率覆盖大面积的能力。然而，也存在一些缺点，例如易受噪声和干扰的影响，这可能会降低接收信号的质量。随着技术的发展，其他调制技术相继出现，如频率调制（FM）和相位调制（PM）。虽然这些方法提供了更好的抗噪声能力和更好的音质，但在某些应用中，尤其是在优先考虑简单性和成本效益的情况下，幅度调制载波仍然保持相关性。除了广播，幅度调制载波还被用于各种形式的数据传输。例如，在模拟电视广播中，视频信号通过AM技术进行传输。同样，一些形式的双向无线电通信也利用幅度调制载波来促进用户之间清晰的语音传输。对幅度调制载波的理解不仅限于广播和电视。在电子学领域，工程师在设计需要远距离信号传输的电路和系统时利用这一概念。调制原理被应用于各种技术，包括卫星通信、手机，甚至某些形式的互联网数据传输。此外，数字通信的进步导致了更复杂的调制技术的发展。然而，幅度调制载波的基本原理仍然为这些现代方法奠定了基础。随着我们继续探索无线通信的可能性，幅度调制载波的遗产依然重要，提醒我们理解信号传输基础的重要性。总之，术语幅度调制载波概括了一个在多年发展中的通信技术的重要方面。它在各个领域的应用表明了这一概念在我们日益互联的世界中的持久相关性。通过掌握幅度调制载波背后的原理，我们对使我们能够在广阔距离上有效沟通的技术有了更深入的认识。