digital phase-locked loop

简明释义

数字锁相环

英英释义

例句

1.For accurate timing, the system relies on a digital phase-locked loop to align the clock signals.

为了准确的时序，系统依赖于数字相位锁定环来对齐时钟信号。

2.Engineers often use a digital phase-locked loop to synchronize multiple signals in a circuit.

工程师们常常使用数字相位锁定环在电路中同步多个信号。

3.In modern communication systems, a digital phase-locked loop is crucial for maintaining signal integrity.

在现代通信系统中，数字相位锁定环对于保持信号完整性至关重要。

4.The digital phase-locked loop helps eliminate jitter in high-speed data transmission.

数字相位锁定环帮助消除高速数据传输中的抖动。

5.The design of the radio transmitter incorporates a digital phase-locked loop for frequency stabilization.

该无线电发射器的设计包含一个数字相位锁定环用于频率稳定。

作文

In today's rapidly advancing technological landscape, the importance of precise timing and synchronization in electronic systems cannot be overstated. One of the most significant innovations that have emerged in this field is the digital phase-locked loop. A digital phase-locked loop (数字锁相环) is an essential electronic circuit used for synchronizing an output signal with a reference signal in terms of both frequency and phase. This technology has found applications in various domains, including telecommunications, audio processing, and even consumer electronics.The fundamental principle behind a digital phase-locked loop involves the comparison of two signals: the reference signal and the output signal generated by the system. The loop essentially adjusts the output signal to match the phase and frequency of the reference signal. This is achieved through a feedback mechanism that continuously monitors the phase difference between the two signals and makes necessary adjustments to reduce this difference to zero.One of the critical components of a digital phase-locked loop is the phase detector, which identifies the phase difference between the reference and output signals. Once the phase difference is detected, it is processed by a loop filter, which smooths out the variations in the signal and helps stabilize the system. Finally, a voltage-controlled oscillator (VCO) generates the output signal, which is then fed back into the phase detector for continuous adjustment.The transition from analog to digital technology has significantly enhanced the performance of digital phase-locked loops. Digital implementations offer improved accuracy, stability, and noise immunity compared to their analog counterparts. Moreover, the integration of digital phase-locked loops into modern microcontrollers and digital signal processors has made them more accessible and easier to implement in various applications.One of the standout advantages of using a digital phase-locked loop is its ability to maintain lock under varying conditions. For instance, in telecommunications, maintaining a stable connection is crucial for ensuring data integrity. A digital phase-locked loop can effectively lock onto a carrier signal, even when there are fluctuations in the signal due to interference or other environmental factors.Furthermore, the versatility of digital phase-locked loops allows them to be used in a wide range of applications. In audio processing, they are utilized in synthesizers and effects processors to create stable pitch and timing. In consumer electronics, digital phase-locked loops are found in devices such as televisions and radios, where they help in tuning and demodulating signals.As we look to the future, the role of digital phase-locked loops is expected to grow even further. With the advent of 5G technology and the Internet of Things (IoT), the demand for precise timing and synchronization will only increase. The ability of digital phase-locked loops to provide reliable performance in these challenging environments will make them indispensable in next-generation communication systems.In conclusion, the digital phase-locked loop (数字锁相环) is a crucial technology in modern electronics that facilitates precise synchronization of signals. Its ability to adapt to changing conditions and its widespread applicability make it a vital component in many electronic systems today. As technology continues to evolve, the significance of digital phase-locked loops will undoubtedly expand, paving the way for new innovations and advancements in the field of electronics.

在当今快速发展的技术环境中，电子系统中精确的时序和同步的重要性不容小觑。出现在这一领域的最重要创新之一就是数字锁相环。数字锁相环（digital phase-locked loop）是一种重要的电子电路，用于将输出信号与参考信号在频率和相位上进行同步。这项技术在多个领域找到了应用，包括电信、音频处理，甚至消费电子产品。数字锁相环的基本原理是比较两个信号：参考信号和系统生成的输出信号。该环路通过反馈机制不断监测这两个信号之间的相位差，并做出必要的调整，以将相位差减少到零。数字锁相环的关键组件之一是相位检测器，它识别参考信号与输出信号之间的相位差。一旦检测到相位差，就会由环路滤波器处理，该滤波器平滑信号中的变化，并帮助稳定系统。最后，一个电压控制振荡器（VCO）生成输出信号，然后反馈到相位检测器进行持续调整。从模拟技术向数字技术的过渡显著提升了数字锁相环的性能。数字实现相比其模拟版本提供了更高的精度、稳定性和抗噪声能力。此外，将数字锁相环集成到现代微控制器和数字信号处理器中，使其在各种应用中变得更加可及和易于实现。使用数字锁相环的一个突出优势是它在变化条件下保持锁定的能力。例如，在电信领域，保持稳定连接对于确保数据完整性至关重要。数字锁相环能够有效地锁定载波信号，即使信号因干扰或其他环境因素而波动。此外，数字锁相环的多功能性使其可以在广泛的应用中使用。在音频处理中，它们被用于合成器和效果处理器中，以创建稳定的音调和时序。在消费电子产品中，数字锁相环出现在电视和收音机等设备中，帮助调谐和解调信号。展望未来，数字锁相环的作用预计将进一步增长。随着5G技术和物联网（IoT）的出现，对精确时序和同步的需求只会增加。数字锁相环在这些具有挑战性的环境中提供可靠性能的能力将使其在下一代通信系统中不可或缺。总之，数字锁相环（digital phase-locked loop）是现代电子技术中的一项关键技术，促进了信号的精确同步。它适应变化条件的能力及其广泛的适用性使其成为当今许多电子系统中的重要组成部分。随着技术的不断发展，数字锁相环的重要性无疑将扩展，为电子领域的新创新和进步铺平道路。