double side-band

简明释义

双边带

英英释义

例句

1.The double side-band technique allows for better bandwidth utilization in communication systems.

双边带技术允许在通信系统中更好地利用带宽。

2.The radio transmitter operates in a double side-band mode to enhance signal clarity.

该无线电发射机以双边带模式运行，以增强信号清晰度。

3.Using double side-band can help reduce interference in crowded frequency bands.

使用双边带可以帮助减少拥挤频段中的干扰。

4.In AM broadcasting, double side-band is commonly used for transmitting audio signals.

在调幅广播中，双边带通常用于传输音频信号。

5.Engineers prefer double side-band modulation for its efficiency in data transmission.

工程师们更喜欢双边带调制，因为它在数据传输中效率高。

作文

In the realm of communication technology, various methods are employed to transmit information effectively. One such method is known as double side-band, which plays a crucial role in amplitude modulation (AM). The term double side-band refers to a type of modulation where two sidebands carry the same information, allowing for more efficient use of bandwidth. This technique is particularly significant in radio broadcasting, where it enables the transmission of audio signals over long distances.The concept of double side-band can be better understood by examining how it operates. In amplitude modulation, a carrier wave is altered in accordance with the amplitude of the input signal, which contains the information to be transmitted. When this process occurs, two sidebands are created: the upper sideband and the lower sideband. Both of these sidebands contain the same information but are positioned at different frequencies relative to the carrier wave. This duality allows for a robust transmission that can be received clearly by radio receivers.One of the primary advantages of using double side-band modulation is its efficiency in bandwidth usage. Since both sidebands carry identical information, they can effectively double the amount of data transmitted without requiring additional bandwidth. This is particularly valuable in crowded frequency environments where spectrum space is limited. By utilizing double side-band, broadcasters can maximize their signal strength and clarity, resulting in better reception for listeners.However, it is essential to recognize that double side-band is not without its drawbacks. One significant issue is the potential for interference. Since both sidebands are transmitted simultaneously, any noise or distortion affecting one sideband can also impact the other. This can lead to a decrease in overall signal quality, making it challenging for receivers to decode the transmitted information accurately. As a result, alternative methods such as single side-band (SSB) modulation have gained popularity, particularly in amateur radio and aviation communications, where clarity and reduced interference are paramount.Despite its limitations, double side-band remains a fundamental technique in the world of radio and communication. It serves as a foundation for understanding more advanced modulation methods and continues to be utilized in various applications. From traditional AM radio stations to modern digital communication systems, the principles of double side-band modulation are still relevant today.In conclusion, the term double side-band represents a vital aspect of amplitude modulation in communication technology. Its ability to efficiently transmit information through two sidebands has made it an enduring choice for radio broadcasting. While there are challenges associated with its use, the benefits it provides in terms of bandwidth efficiency and signal strength cannot be overlooked. As technology continues to evolve, the principles behind double side-band will undoubtedly remain integral to the field of communication, influencing the development of new and innovative transmission techniques.

在通信技术领域，各种方法被用于有效地传递信息。其中一种方法被称为双边带，它在调幅（AM）中发挥着至关重要的作用。术语双边带指的是一种调制类型，其中两个边带携带相同的信息，从而允许更有效地利用带宽。这一技术在广播中尤为重要，因为它能够将音频信号远距离传输。通过检查其工作原理，可以更好地理解双边带的概念。在调幅中，载波波形根据输入信号的幅度进行改变，而输入信号包含要传输的信息。当这一过程发生时，会产生两个边带：上边带和下边带。这两个边带都包含相同的信息，但相对于载波波形的位置不同。这种双重性允许强大的传输，使得收音机接收器能够清晰接收信号。使用双边带调制的主要优势之一是其在带宽使用上的效率。由于两个边带携带相同的信息，它们可以有效地将传输的数据量加倍，而无需额外的带宽。在频率环境拥挤的情况下，频谱空间有限，这一点尤其重要。通过利用双边带，广播商可以最大化信号强度和清晰度，从而为听众提供更好的接收效果。然而，必须认识到双边带并非没有缺点。一个显著的问题是潜在的干扰。由于两个边带同时传输，影响一个边带的任何噪声或失真也可能影响另一个。这可能导致整体信号质量下降，使接收器难以准确解码传输的信息。因此，单边带（SSB）调制等替代方法在业余无线电和航空通信中越来越受欢迎，在这些领域，清晰度和减少干扰至关重要。尽管存在局限性，双边带仍然是无线电和通信领域的一项基本技术。它作为理解更先进调制方法的基础，并继续在各种应用中得到利用。从传统的AM广播电台到现代数字通信系统，双边带调制的原理在今天依然相关。总之，术语双边带代表了通信技术中调幅的重要方面。它通过两个边带高效传输信息的能力使其成为广播的持久选择。尽管使用过程中存在挑战，但它在带宽效率和信号强度方面所提供的好处不可忽视。随着技术的不断发展，双边带背后的原理无疑将继续在通信领域中发挥重要作用，影响新技术的开发。