heterodyne

简明释义

英[ˈhetərəʊˌdaɪn]美[ˈhetərəˌdaɪn]

v. 使（交变无线电信号）混合以产生外差效果

adj. （无线电传播中）外差的，外差法的

第 三 人 称 单 数 h e t e r o d y n e s

现 在 分 词 h e t e r o d y n i n g

过 去 式 h e t e r o d y n e d

过 去 分 词 h e t e r o d y n e d

英英释义

单词用法

同义词

反义词

例句

1.Heterodyne efficiency is reduced by aberration of receiving antenna for space coherent optical communication.

空间相干光通信中接收天线像差会使光外差效率下降。

2.The super-heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system.

在现代通信系统中，毫米波频段通常采用超外差接收机，混频器作为第一级就成为关键部件。

3.The principle and experimental results of all-fibre optical heterodyne sys-tem, in which ordinary single mode fibres are used, are presented.

本文介绍了由普通单模光纤构成的全光纤光外差检测系统的基本原理和实验研究结果。

4.The pulse laser heterodyne waveform is present.

同时给出了脉冲外差波形。

5.The principle and experimental results of phase modulation optical heterodyne detection technique for measuring reflection of optical cavity are described.

本文叙述了用位相调制光外差技术探测光学谐振腔反射特性的原理及实验结果。

6.The Doppler frequency can be obtained as a heterodyne or beat effect.

由于外差或频差效应，能够得到多普勒频率。

7.Aim To develop a laser diode modulated driver power for synthesis heterodyne interference.

目的为半导体激光器合成外差干涉研制一调制驱动电源。

8.A heterodyne interference is caused by a frequency modulation of a laser diode (LD) with a ramp injection current, and a linear phase detection is realized.

传感器利用注入结电流直接调频的半导体激光(LD)产生外差干涉，从而实现了干涉相位的线性检测。

9.The radio receiver uses a heterodyne 异频 technique to amplify weak signals.

该无线电接收器使用异频技术来放大微弱信号。

10.In radar systems, heterodyne 异频 methods are employed to improve target detection.

在雷达系统中，采用异频方法来提高目标检测能力。

11.The heterodyne 异频 approach allows for the mixing of two frequencies to produce new signals.

这种异频方法允许混合两个频率以产生新信号。

12.Using a heterodyne 异频 oscillator can significantly enhance the performance of communication systems.

使用异频振荡器可以显著提高通信系统的性能。

13.The heterodyne 异频 detection technique is crucial in fiber optic communications.

在光纤通信中，异频检测技术至关重要。

作文

The term heterodyne refers to a technique used in electronics and telecommunications for mixing two different frequencies to create new frequencies. This method is widely utilized in radio transmission and reception, where it plays a crucial role in the modulation and demodulation processes. By combining a carrier wave with a signal wave, the heterodyne process allows for the effective transmission of information over long distances. This is particularly important in modern communication systems, where clarity and range are essential for successful data exchange. In essence, the heterodyne technique works by taking two input signals: one is typically a high-frequency carrier wave, while the other is a lower frequency signal that contains the information to be transmitted. When these two waves interact, they produce new frequencies, known as intermediate frequencies (IF). These IFs can be more easily processed and filtered than the original high-frequency signals, making them ideal for use in various applications, such as radio receivers and transmitters. The advantages of using heterodyne techniques are numerous. For one, they significantly improve the sensitivity and selectivity of radio receivers. By converting high-frequency signals to lower frequencies, devices can better isolate and amplify the desired signal while minimizing noise and interference. This capability is vital in crowded frequency environments, such as urban areas where multiple signals may overlap. Moreover, heterodyne systems allow for greater flexibility in tuning and adjusting frequencies. Engineers can design receivers that can easily switch between different channels or frequencies without the need for complex mechanical adjustments. This adaptability has made heterodyne technology a cornerstone of modern radio and telecommunications equipment. Despite its many benefits, the heterodyne technique does come with some challenges. One significant issue is the potential for unwanted mixing products, known as spurious signals, which can arise during the mixing process. These spurious signals can interfere with the desired output and complicate the signal processing. Engineers must carefully design heterodyne systems to minimize these effects and ensure high-quality signal transmission. In conclusion, the concept of heterodyne is a fundamental aspect of modern electronics and communication systems. Its ability to mix frequencies and generate intermediate frequencies has revolutionized how we transmit and receive information. As technology continues to advance, the importance of heterodyne techniques will only grow, paving the way for more efficient and effective communication solutions in our increasingly connected world. Understanding this term and its applications is essential for anyone interested in the fields of electronics, telecommunications, and signal processing.

术语heterodyne指的是一种在电子和电信中使用的技术，用于混合两个不同的频率以产生新的频率。这种方法广泛应用于无线电传输和接收，在调制和解调过程中起着至关重要的作用。通过将载波波与信号波结合，heterodyne过程使得信息能够有效地在长距离内传输。这在现代通信系统中尤为重要，因为清晰度和范围对于成功的数据交换至关重要。 从本质上讲，heterodyne技术通过获取两个输入信号来工作：一个通常是高频载波波，而另一个是包含要传输的信息的较低频率信号。当这两种波相互作用时，它们会产生新的频率，称为中频（IF）。这些IF比原始高频信号更容易处理和过滤，使其在无线电接收器和发射器等各种应用中理想。 使用heterodyne技术的优点有很多。首先，它们显著提高了无线电接收器的灵敏度和选择性。通过将高频信号转换为低频信号，设备可以更好地隔离和放大所需信号，同时最小化噪声和干扰。这种能力在拥挤的频率环境中至关重要，例如多个信号可能重叠的城市地区。 此外，heterodyne系统允许在调谐和调整频率方面具有更大的灵活性。工程师可以设计出能够轻松切换不同频道或频率的接收器，而无需复杂的机械调整。这种适应性使得heterodyne技术成为现代无线电和电信设备的基石。 尽管有许多好处，但heterodyne技术也面临一些挑战。一个重大问题是在混合过程中可能产生的非期望混合产物，称为杂散信号，这可能干扰所需输出并使信号处理复杂化。工程师必须仔细设计heterodyne系统，以最小化这些影响并确保高质量的信号传输。 总之，heterodyne的概念是现代电子和通信系统的基本方面。它混合频率和生成中频的能力彻底改变了我们传输和接收信息的方式。随着技术的不断进步，heterodyne技术的重要性只会增加，为我们日益互联的世界提供更高效、更有效的通信解决方案。理解这个术语及其应用对任何对电子、电信和信号处理领域感兴趣的人来说都是必不可少的。