frequency modulated carrier

简明释义

调频载波

英英释义

例句

1.In radio broadcasting, the sound is transmitted through a frequency modulated carrier which enhances the quality of the audio signal.

在广播中，声音通过一个频率调制载波传输，这提高了音频信号的质量。

2.Engineers often use a frequency modulated carrier in telecommunications to improve signal clarity.

工程师们常常在电信中使用频率调制载波来提高信号清晰度。

3.The frequency modulated carrier allows for better resistance to noise compared to amplitude modulation.

与幅度调制相比，频率调制载波对噪声具有更好的抗干扰能力。

4.For satellite communications, a frequency modulated carrier is used to transmit data over long distances.

在卫星通信中，使用频率调制载波来远距离传输数据。

5.The frequency modulated carrier technique is essential for modern digital communication systems.

在现代数字通信系统中，频率调制载波技术是必不可少的。

作文

In the realm of telecommunications, the concept of a frequency modulated carrier plays a crucial role in the transmission of information. A frequency modulated carrier refers to a type of signal that varies its frequency in accordance with the information being sent. This modulation technique is widely used in various forms of communication, such as radio broadcasting, television signals, and even in mobile communications. Understanding how a frequency modulated carrier operates can significantly enhance our comprehension of modern communication systems.To grasp the significance of a frequency modulated carrier, it is essential to first understand the basics of modulation. Modulation is the process by which a carrier wave is altered to encode information. In amplitude modulation (AM), the amplitude of the carrier wave changes, while in frequency modulation (FM), it is the frequency that varies. The frequency modulated carrier is particularly advantageous because it is less susceptible to noise and interference compared to its AM counterpart. This makes FM a preferred choice for high-fidelity audio transmissions, such as those used in FM radio stations.When a frequency modulated carrier is generated, it involves the use of a modulator, which alters the frequency of the carrier wave based on the input signal. For instance, if the input signal is an audio waveform, the modulator will adjust the frequency of the carrier wave in real-time to reflect the variations in the audio signal. This creates a new signal that carries the information of the original audio while maintaining the integrity of the transmission. The result is a clear and robust signal that can be transmitted over long distances without significant loss of quality.The application of frequency modulated carriers extends beyond audio broadcasting. In television broadcasting, FM is used for transmitting video signals as well. The visual information is encoded onto a carrier wave using frequency modulation, allowing for high-quality video transmission. Additionally, FM is utilized in two-way radio communications, where clarity and range are paramount. Emergency services, aviation, and maritime communications rely heavily on the effectiveness of frequency modulated carriers to ensure reliable communication.Moreover, the principles of frequency modulated carriers are also applied in digital communication systems. In these systems, data is transmitted using various modulation schemes, including frequency shift keying (FSK), which is a form of frequency modulation. FSK allows digital data to be transmitted over a frequency modulated carrier, enabling efficient data transfer in applications such as computer networking and wireless communications.In conclusion, the concept of a frequency modulated carrier is fundamental to understanding modern communication technology. Its ability to provide clear and reliable transmission of information makes it a cornerstone of various communication systems. As we continue to advance technologically, the importance of mastering concepts like the frequency modulated carrier becomes increasingly evident. By appreciating the intricacies of this modulation technique, we can better understand the mechanisms that underpin the communication systems we rely on every day.

在电信领域，频率调制载波的概念在信息传输中发挥着至关重要的作用。频率调制载波是指一种信号，其频率根据所发送的信息而变化。这种调制技术广泛应用于各种通信形式，如广播、电视信号，甚至移动通信。理解频率调制载波的工作原理可以显著增强我们对现代通信系统的理解。要掌握频率调制载波的重要性，首先需要了解调制的基本概念。调制是指通过改变载波波形来编码信息的过程。在幅度调制（AM）中，载波波形的幅度发生变化，而在频率调制（FM）中，变化的是频率。频率调制载波特别有优势，因为它比其AM对应物更不易受到噪声和干扰的影响。这使得FM成为高保真音频传输的首选，例如FM广播电台所使用的。当生成频率调制载波时，涉及到一个调制器，该调制器根据输入信号改变载波波形的频率。例如，如果输入信号是音频波形，调制器将实时调整载波波形的频率，以反映音频信号中的变化。这创建了一个新的信号，携带原始音频的信息，同时保持传输的完整性。结果是一个清晰而强大的信号，可以在长距离内传输而不会显著损失质量。频率调制载波的应用不仅限于音频广播。在电视广播中，FM也用于传输视频信号。视觉信息通过频率调制编码到载波波形上，从而实现高质量的视频传输。此外，FM还用于双向无线电通信，在这些通信中，清晰度和范围至关重要。紧急服务、航空和海事通信在很大程度上依赖于频率调制载波的有效性，以确保可靠的通信。此外，频率调制载波的原理也应用于数字通信系统。在这些系统中，数据通过各种调制方案进行传输，包括频率移位键控（FSK），这是一种频率调制形式。FSK允许数字数据通过频率调制载波进行传输，从而实现计算机网络和无线通信等应用中的高效数据传输。总之，频率调制载波的概念是理解现代通信技术的基础。它提供清晰和可靠的信息传输的能力，使其成为各种通信系统的基石。随着我们不断推进技术，掌握像频率调制载波这样的概念的重要性变得愈加明显。通过欣赏这一调制技术的复杂性，我们可以更好地理解支撑我们日常依赖的通信系统的机制。