image frequency

简明释义

像频

英英释义

例句

1.The technician explained how image frequency can interfere with the desired signal.

技术人员解释了图像频率如何干扰所需信号。

2.To improve reception, we need to filter out any signals at the image frequency.

为了改善接收，我们需要过滤掉任何在图像频率上的信号。

3.Understanding image frequency is crucial for designing effective RF amplifiers.

理解图像频率对于设计有效的射频放大器至关重要。

4.In this application, we must consider the image frequency to avoid distortion.

在这个应用中，我们必须考虑图像频率以避免失真。

5.The radio engineer adjusted the circuit to minimize the effects of image frequency.

无线电工程师调整电路以最小化图像频率的影响。

作文

In the world of radio and television broadcasting, the term image frequency refers to an unwanted signal that can interfere with the reception of the desired signal. This phenomenon occurs when a broadcast frequency is close to a multiple of the image frequency, resulting in the potential for confusion between the two signals. Understanding image frequency is crucial for engineers and technicians who work in the field of telecommunications, as it directly impacts the quality of the signals being transmitted and received.To elaborate further, let’s consider how image frequency works in practical terms. When a radio or television receiver is tuned to a specific frequency, it is designed to filter out all other frequencies except the one that is intended for reception. However, if there exists another frequency, known as the image frequency, that is a certain distance away from the desired frequency, it can also be picked up by the receiver. This can lead to a situation where the receiver picks up both the intended signal and the image frequency, causing distortion or interference in the audio or visual output.For example, if a radio station broadcasts at a frequency of 100 MHz, the image frequency might occur at a frequency that is twice the intermediate frequency used in the receiver. If the intermediate frequency is 10 MHz, then the image frequency would be at 120 MHz. This means that if there is a strong signal at 120 MHz, it could potentially disrupt the clarity of the signal being received at 100 MHz, leading to poor sound quality or even complete loss of the desired signal.To mitigate the effects of image frequency, engineers often implement various filtering techniques in the design of receivers. These filters are designed to allow only the desired frequency to pass through while blocking any potential image frequency signals. This is essential for maintaining high-quality reception, especially in urban areas where many different signals may be present.Moreover, understanding image frequency is not only important for radio and television but also for other forms of communication technology, including mobile phones and satellite communications. As the demand for clearer and more reliable signals continues to grow, the need for effective management of image frequency becomes increasingly critical.In conclusion, the concept of image frequency plays a significant role in the field of telecommunications. It represents a challenge that must be addressed to ensure clear and uninterrupted communication. By employing advanced filtering techniques and a deeper understanding of the principles behind image frequency, professionals in the industry can enhance the quality of the signals we rely on every day. Ultimately, the goal is to provide users with a seamless experience, free from the disruptions that can arise from these unintended frequencies. As technology continues to evolve, so too will the methods we use to combat the challenges posed by image frequency and other similar phenomena.

在广播和电视广播的世界中，术语image frequency指的是一种不必要的信号，它可能干扰所需信号的接收。这种现象发生在当广播频率接近于图像频率的倍数时，从而导致这两个信号之间可能出现混淆。理解image frequency对于从事电信领域的工程师和技术人员至关重要，因为它直接影响到传输和接收信号的质量。进一步阐述，让我们考虑一下image frequency在实际中的工作方式。当收音机或电视接收器调谐到特定频率时，它被设计为过滤掉除所需接收频率以外的所有其他频率。然而，如果存在一个称为图像频率的另一个频率，距离所需频率一定距离，它也可能被接收器捕获。这可能导致接收器同时接收到预期信号和image frequency，从而导致音频或视频输出中的失真或干扰。例如，如果某个广播电台在100 MHz的频率上广播，则image frequency可能出现在接收器使用的中间频率的两倍的频率上。如果中间频率是10 MHz，那么image frequency将在120 MHz上。这意味着如果在120 MHz上有一个强信号，它可能会干扰在100 MHz上接收到的信号的清晰度，从而导致音质差甚至完全丧失所需信号。为了减轻image frequency的影响，工程师通常在接收器的设计中实施各种过滤技术。这些滤波器旨在仅允许所需频率通过，同时阻止任何潜在的image frequency信号。这对于保持高质量的接收尤其重要，特别是在城市地区，许多不同的信号可能同时存在。此外，理解image frequency不仅对广播和电视重要，而且对其他形式的通信技术（包括手机和卫星通信）也同样重要。随着对更清晰、更可靠信号的需求不断增长，有效管理image frequency的必要性变得越来越关键。总之，image frequency的概念在电信领域扮演着重要角色。它代表着一个必须解决的挑战，以确保清晰和不间断的通信。通过采用先进的过滤技术和对image frequency背后原理的深入理解，行业专业人士可以提高我们每天依赖的信号的质量。最终目标是为用户提供无缝的体验，免受这些意外频率可能带来的干扰。随着技术的不断发展，我们用于应对image frequency和其他类似现象所带来的挑战的方法也将不断演进。