high performance superheterodyne receiver

简明释义

高性能超外差式接收机

英英释义

例句

1.Our research on wireless communication systems relies heavily on a high performance superheterodyne receiver.

我们对无线通信系统的研究在很大程度上依赖于高性能超外差接收器。

2.In our laboratory, we use a high performance superheterodyne receiver for precise frequency measurements.

在我们的实验室中，我们使用一个高性能超外差接收器进行精确的频率测量。

3.Engineers often prefer a high performance superheterodyne receiver for its ability to reject unwanted frequencies.

工程师们通常更喜欢使用高性能超外差接收器，因为它能够抑制不需要的频率。

4.The high performance superheterodyne receiver is essential for capturing weak signals in telecommunications.

在电信中，高性能超外差接收器对于捕捉微弱信号是必不可少的。

5.The new model of the radio includes a high performance superheterodyne receiver that significantly improves sound quality.

新型号的收音机配备了一个高性能超外差接收器，显著提升了音质。

作文

In the field of telecommunications and radio engineering, the term high performance superheterodyne receiver refers to a sophisticated type of radio receiver that is designed to convert a received signal into a lower frequency for easier processing. This technology is widely used in various applications, including broadcasting, telecommunications, and even in modern smartphones. Understanding the intricacies of a high performance superheterodyne receiver is essential for anyone interested in the development and functioning of communication systems.The superheterodyne receiver was invented in the early 20th century by Edwin Armstrong, and it revolutionized the way radio signals are processed. At its core, the superheterodyne receiver works by mixing the incoming radio frequency (RF) signal with a locally generated frequency from a local oscillator. This mixing process produces two new frequencies: the sum and the difference of the original frequencies. The difference frequency, known as the intermediate frequency (IF), is what the receiver ultimately processes. This method allows the receiver to be more selective and sensitive, making it capable of picking up weak signals amidst noise and interference.A high performance superheterodyne receiver typically employs advanced techniques to enhance its capabilities. For instance, it may incorporate multiple stages of amplification and filtering to improve the signal-to-noise ratio (SNR). High-quality components and precise tuning mechanisms are also crucial for achieving optimal performance. Additionally, digital signal processing (DSP) techniques can be integrated into these receivers to allow for more sophisticated signal manipulation and analysis.One of the primary advantages of using a high performance superheterodyne receiver is its ability to operate over a wide range of frequencies. This versatility makes it suitable for various applications, from AM and FM radio to satellite communications and radar systems. The receiver’s design enables it to handle multiple channels simultaneously, which is particularly beneficial in crowded frequency environments.Moreover, the high performance superheterodyne receiver is often equipped with automatic gain control (AGC) to adjust the receiver's sensitivity based on the strength of the incoming signal. This feature helps maintain consistent audio quality and clarity, regardless of fluctuations in signal strength. As a result, users experience fewer interruptions and clearer reception, whether they are listening to their favorite radio station or engaging in a video call.In conclusion, the high performance superheterodyne receiver is an integral component of modern communication systems. Its ability to effectively process and amplify radio signals has made it a standard in the industry. As technology continues to advance, we can expect further improvements in the design and functionality of these receivers, enhancing our ability to connect and communicate across the globe. Understanding the principles behind a high performance superheterodyne receiver not only enriches our knowledge of radio technology but also highlights the importance of innovation in the ever-evolving field of telecommunications.

在电信和无线电工程领域，术语高性能超外差接收机指的是一种复杂的无线电接收机，旨在将接收到的信号转换为较低的频率，以便于处理。这项技术广泛应用于广播、电信，甚至现代智能手机等各种应用中。理解高性能超外差接收机的复杂性对于任何对通信系统的发展和功能感兴趣的人来说都是至关重要的。超外差接收机是由埃德温·阿姆斯特朗在20世纪初发明的，它彻底改变了无线电信号的处理方式。在其核心，超外差接收机通过将接收到的无线电频率（RF）信号与来自本地振荡器的本地生成频率混合来工作。这一混合过程产生两个新频率：原始频率的和频和差频。差频被称为中频（IF），这是接收机最终处理的频率。这种方法使接收机更具选择性和灵敏度，使其能够在噪声和干扰中接收微弱信号。高性能超外差接收机通常采用先进技术来增强其能力。例如，它可能包含多个放大和滤波阶段，以提高信噪比（SNR）。高质量的组件和精确的调谐机制对于实现最佳性能也至关重要。此外，数字信号处理（DSP）技术可以集成到这些接收机中，以允许更复杂的信号处理和分析。使用高性能超外差接收机的主要优点之一是它能够在广泛的频率范围内工作。这种多功能性使其适用于各种应用，从AM和FM广播到卫星通信和雷达系统。接收机的设计使其能够同时处理多个频道，这在拥挤的频率环境中特别有利。此外，高性能超外差接收机通常配备自动增益控制（AGC），以根据接入信号的强度调整接收机的灵敏度。此功能有助于保持一致的音频质量和清晰度，无论信号强度波动如何。因此，用户在收听自己喜欢的广播电台或进行视频通话时，体验到更少的中断和更清晰的接收。总之，高性能超外差接收机是现代通信系统的重要组成部分。其有效处理和放大无线电信号的能力使其成为行业标准。随着技术的不断进步，我们可以期待这些接收机的设计和功能进一步改善，增强我们在全球范围内连接和沟通的能力。理解高性能超外差接收机背后的原理不仅丰富了我们对无线电技术的知识，也突显了创新在不断发展的电信领域中的重要性。