narrow band

简明释义

狭小汇率幅度

英英释义

例句

1.The radio station broadcasts on a specific frequency within a narrow band of the spectrum.

这个广播电台在频谱的一个特定频率内进行广播，属于一个窄带。

2.Scientists are studying narrow band emissions from distant stars.

科学家们正在研究来自遥远星星的窄带辐射。

3.The device operates in a narrow band to reduce interference from other signals.

该设备在一个窄带内运行，以减少来自其他信号的干扰。

4.The new technology allows for narrow band communication, which is more efficient for certain applications.

这项新技术允许进行窄带通信，这对于某些应用来说更加高效。

5.In telecommunications, a narrow band connection is often slower than a wide band connection.

在电信中，窄带连接通常比宽带连接更慢。

作文

In the realm of telecommunications and signal processing, the term narrow band refers to a limited range of frequencies that are used for transmitting information. Unlike wideband systems, which utilize a broad spectrum of frequencies, narrow band systems focus on a specific, smaller frequency range. This approach has both advantages and disadvantages depending on the application. For instance, narrow band communication is often more efficient in terms of power usage, making it ideal for applications where energy conservation is crucial, such as in remote sensors or battery-operated devices.The concept of narrow band can be observed in various technologies, including radio communications and data transmission. In radio communications, narrow band signals can penetrate through obstacles better than wideband signals, which makes them suitable for urban environments where buildings and other structures can disrupt signal propagation. Additionally, because narrow band systems require less bandwidth, they can accommodate more simultaneous users within the same frequency range, which is particularly beneficial in crowded communication channels.However, there are trade-offs when using narrow band technology. One significant drawback is the potential for lower data transfer rates compared to wideband systems. This limitation can pose challenges for applications that demand high-speed data transmission, such as video streaming or large file transfers. Consequently, while narrow band systems are effective for voice communication and certain types of sensor data, they may not be suitable for all modern data requirements.Another important aspect to consider is the impact of interference on narrow band systems. Since these systems operate over a limited frequency range, they can be more susceptible to interference from other signals operating within or adjacent to their frequency band. This susceptibility can lead to degraded performance and reduced reliability, particularly in environments with high levels of electromagnetic noise.Despite these challenges, the use of narrow band technology continues to grow, especially with the advent of the Internet of Things (IoT). Many IoT devices, which often require low power consumption and long-range communication capabilities, leverage narrow band networks to transmit small amounts of data over extended distances. Technologies such as LoRaWAN (Long Range Wide Area Network) and Sigfox exemplify how narrow band solutions can effectively support the needs of modern connectivity without overwhelming network resources.In conclusion, understanding the implications of narrow band technology is essential for anyone involved in the fields of telecommunications and data communications. While it presents certain limitations, its benefits in terms of efficiency, range, and user capacity make it a valuable option for many applications. As technology continues to evolve, the role of narrow band systems will undoubtedly adapt, finding new ways to meet the demands of an increasingly connected world.

在电信和信号处理领域，术语narrow band指的是用于传输信息的有限频率范围。与使用广泛频谱频率的宽带系统不同，narrow band系统专注于特定的较小频率范围。这种方法根据应用的不同具有优缺点。例如，narrow band通信通常在功耗方面更为高效，非常适合能源节约至关重要的应用，如远程传感器或电池供电设备。narrow band的概念可以在各种技术中观察到，包括无线电通信和数据传输。在无线电通信中，narrow band信号能够比宽带信号更好地穿透障碍物，这使得它们适合于城市环境，在这些环境中，建筑物和其他结构可能会干扰信号传播。此外，由于narrow band系统所需的带宽较少，它们可以在同一频率范围内容纳更多的同时用户，这在拥挤的通信频道中特别有利。然而，使用narrow band技术时存在权衡。一大显著缺点是，与宽带系统相比，数据传输速率可能较低。这一限制可能对需要高速数据传输的应用构成挑战，例如视频流或大文件传输。因此，尽管narrow band系统对于语音通信和某些类型的传感器数据非常有效，但可能并不适合所有现代数据需求。另一个重要方面是干扰对narrow band系统的影响。由于这些系统在有限的频率范围内操作，因此它们可能更容易受到在其频率带内或相邻频率运行的其他信号的干扰。这种易受干扰性可能导致性能下降和可靠性降低，特别是在电磁噪声水平较高的环境中。尽管面临这些挑战，narrow band技术的使用仍在不断增长，尤其是在物联网（IoT）兴起的背景下。许多物联网设备通常需要低功耗和长距离通信能力，利用narrow band网络来传输少量数据。LoRaWAN（长距离广域网）和Sigfox等技术证明了narrow band解决方案如何有效支持现代连接的需求，而不会压倒网络资源。总之，理解narrow band技术的含义对于任何参与电信和数据通信领域的人来说都是至关重要的。尽管它存在某些局限性，但在效率、范围和用户容量方面的优势使其成为许多应用的宝贵选择。随着技术的不断发展，narrow band系统的角色无疑将适应，寻找新的方式来满足日益互联的世界的需求。