superheterodyne

简明释义

英[/ˌsuːpərˈhɛtərəˌdaɪn/]美[/ˌsuːpərˈhɛtərəˌdaɪn/]

adj. 超外差的

n. 超外差式收音机，超外差式接收机

英英释义

单词用法

同义词

反义词

例句

1.This paper first discusses the instinct disadvantage of a superheterodyne receiver, which is that it has more spurious response.

本文首先指出了超外差接收机的固有缺点，即它有更多的虚假响应。

2.The system adopts superheterodyne architecture. It consists of intermediate frequency (IF) band and radio frequency (RF) band hardware design.

该收发信机采用超外差结构，主要包括中频部分的硬件设计以及射频部分的硬件设计。

3.Edwin armstrong develops a receiving circuit-the superheterodyne.

艾德温？阿姆斯特朗开发接收机电路—超外差式收音机。

4.The system uses the emitter to send ultra high frequency signals after coding with signal coder and the secondary superheterodyne mixing receiver to accept the moving target signals.

系统中发射器采用编码器编码后发送超高频信号，接收器采用二次混频型超外差式接收移动目标信号。

5.Microstrip interdigital band-pass filters are compact and easy for batch manufacturing. They are suitable for applications in TVRO superheterodyne receivers as image-reject filters.

微带交指带通滤波器具有结构紧凑、易于批量生产的特点，适用于TVRO超外差接收机中作为镜像频率抑制滤波器。

6.Finally, it points out that, as far as wide open receiver is concerned, to suppress or reduce the spurious response is one of the most important tasks in designing a superheterodyne receiver.

最后指出对于宽开接收机而言，抑制或减少虚假响应是设计超外差接收机的重要任务之一。

7.Finally, it points out that, as far as wide open receiver is concerned, to suppress or reduce the spurious response is one of the most important tasks in designing a superheterodyne receiver.

最后指出对于宽开接收机而言，抑制或减少虚假响应是设计超外差接收机的重要任务之一。

8.This paper discussed the double sideband noise figures and single side band noise figures of the superheterodyne receivers in a ideal hypothesis and the practical case respectively.

分别讨论了在理想假设和实际情况下超外差接收机的双边带噪声系数和单边带噪声系数，给出了单边带接收机的某些设计方案。

9.A simple analysis of the superheterodyne AM radio circuit and the principle of assembly and debugging.

简朴分析了超外差式调幅收音机电路的工作原理及其组装和调试。

10.Many television sets utilize a superheterodyne 超外差 receiver to process incoming signals.

许多电视机利用superheterodyne 超外差接收器处理接收到的信号。

11.The superheterodyne 超外差 technique allows for better frequency selection in complex environments.

在复杂环境中，superheterodyne 超外差技术允许更好的频率选择。

12.In modern communication systems, the superheterodyne 超外差 method is widely used for its efficiency.

在现代通信系统中，superheterodyne 超外差方法因其高效性而被广泛使用。

13.The design of the superheterodyne 超外差 circuit is crucial for achieving high sensitivity.

设计superheterodyne 超外差电路对于实现高灵敏度至关重要。

14.The radio receiver employs a superheterodyne 超外差 architecture to improve signal clarity.

该收音机接收器采用了superheterodyne 超外差架构以提高信号清晰度。

作文

The term superheterodyne refers to a type of radio receiver that has become a fundamental technology in the field of radio communications. This method of reception was first developed in the early 20th century and has since revolutionized the way we receive and process radio signals. The basic principle behind a superheterodyne receiver is the mixing of a received radio frequency signal with a local oscillator signal to produce an intermediate frequency (IF) signal. This intermediate frequency can be more easily amplified and filtered than the original radio frequency, allowing for better performance and sensitivity.One of the key advantages of the superheterodyne design is its ability to provide selectivity and sensitivity across a wide range of frequencies. By converting incoming signals to a fixed intermediate frequency, the receiver can use the same amplification and filtering components regardless of the original signal frequency. This universality makes superheterodyne receivers highly effective for various applications, from AM/FM radios to television and even satellite communication systems.The superheterodyne receiver typically consists of several critical components, including an antenna, a mixer, a local oscillator, and multiple stages of amplification and filtering. The antenna captures the radio waves, which are then fed into the mixer. The mixer combines the incoming radio frequency signal with the output of the local oscillator, producing the intermediate frequency. This IF signal is then amplified and filtered to isolate the desired audio or data signal from unwanted noise and interference.In addition to its technical advantages, the superheterodyne architecture has also led to significant advancements in the design of radio equipment. For example, the use of integrated circuits has allowed for the miniaturization of superheterodyne receivers, making them suitable for portable devices such as smartphones and handheld radios. Furthermore, the flexibility of the superheterodyne design has enabled manufacturers to create multi-band receivers that can tune into various frequencies without requiring extensive hardware changes.Despite its many benefits, the superheterodyne receiver is not without its challenges. One issue that can arise is image frequency interference, where unwanted signals at certain frequencies can mix with the desired signal, leading to distortion or loss of clarity. Engineers have developed various techniques to mitigate this problem, such as using higher local oscillator frequencies and implementing advanced filtering methods.Overall, the superheterodyne receiver has played a crucial role in the evolution of radio technology. Its innovative approach to signal processing has paved the way for modern communication systems, enabling clearer and more reliable transmission of information. As technology continues to advance, the principles of superheterodyne reception will likely remain relevant, influencing future developments in wireless communication and beyond.

术语superheterodyne指的是一种无线电接收器，这种接收器在无线电通信领域已经成为一种基本技术。这种接收方法最早是在20世纪初开发的，并且自那时以来，它彻底改变了我们接收和处理无线电信号的方式。superheterodyne接收器的基本原理是将接收到的无线电频率信号与本地振荡器信号混合，以产生中频（IF）信号。这个中频信号比原始的无线电频率信号更容易放大和过滤，从而提高性能和灵敏度。superheterodyne设计的一个关键优势是它能够在广泛的频率范围内提供选择性和灵敏度。通过将来信号转换为固定的中频，接收器可以使用相同的放大和过滤元件，而不管原始信号频率如何。这种通用性使得superheterodyne接收器在各种应用中非常有效，从AM/FM收音机到电视甚至卫星通信系统。superheterodyne接收器通常由几个关键组件组成，包括天线、混频器、本地振荡器和多个放大和过滤阶段。天线捕获无线电波，然后将其传送到混频器。混频器将输入的无线电频率信号与本地振荡器的输出结合，产生中频信号。然后，这个IF信号被放大和过滤，以从不必要的噪声和干扰中隔离所需的音频或数据信号。除了技术优势之外，superheterodyne架构还导致了无线电设备设计的重大进步。例如，集成电路的使用使得superheterodyne接收器的小型化成为可能，使其适用于智能手机和手持无线电等便携式设备。此外，superheterodyne设计的灵活性使制造商能够创建多频段接收器，可以在不需要广泛硬件更改的情况下调谐到各种频率。尽管有许多好处，superheterodyne接收器也面临着一些挑战。一个可能出现的问题是图像频率干扰，即某些频率的干扰信号可能与所需信号混合，导致失真或清晰度丧失。工程师们开发了各种技术来减轻这个问题，例如使用更高的本地振荡器频率和实施先进的过滤方法。总体而言，superheterodyne接收器在无线电技术的发展中发挥了至关重要的作用。其创新的信号处理方法为现代通信系统铺平了道路，使信息的传输更加清晰和可靠。随着技术的不断进步，superheterodyne接收的原理可能仍然具有相关性，影响未来无线通信及其他领域的发展。