variable-frequency oscillator

简明释义

可调频率振荡器

英英释义

例句

1.In radar systems, a variable-frequency oscillator is essential for tuning into different target frequencies.

在雷达系统中，可变频率振荡器对于调谐不同目标频率至关重要。

2.Engineers often use a variable-frequency oscillator to test the frequency response of electronic components.

工程师们经常使用可变频率振荡器来测试电子元件的频率响应。

3.The radio transmitter uses a variable-frequency oscillator to adjust the signal frequency for better reception.

这台无线电发射机使用可变频率振荡器来调整信号频率，以获得更好的接收效果。

4.A variable-frequency oscillator can be found in many modern communication devices for frequency modulation.

许多现代通信设备中都可以找到可变频率振荡器用于频率调制。

5.The variable-frequency oscillator in the synthesizer allows musicians to create a wide range of sounds.

合成器中的可变频率振荡器使音乐家能够创造出各种声音。

作文

In the realm of electronics and communication systems, the term variable-frequency oscillator refers to a crucial component that generates oscillating signals at varying frequencies. This device plays an essential role in numerous applications, ranging from radio transmission to radar technology. Understanding how a variable-frequency oscillator operates can provide valuable insights into its significance in modern technology.A variable-frequency oscillator is designed to produce a continuous wave signal whose frequency can be adjusted over a predetermined range. The ability to change frequency is vital for applications that require tuning to different channels or frequencies. For instance, in radio broadcasting, a variable-frequency oscillator allows the transmitter to switch between different frequencies, enabling it to send signals to various radio stations without interference.The operation of a variable-frequency oscillator typically involves electronic components such as capacitors, inductors, and sometimes resistors. These components work together to create an oscillation circuit that can be fine-tuned. The frequency of the output signal is determined by the values of these components; by altering them, engineers can modify the frequency output as needed. This tunability is what sets the variable-frequency oscillator apart from fixed-frequency oscillators, which can only generate signals at a specific frequency.One of the most common types of variable-frequency oscillators is the phase-locked loop (PLL). A PLL can lock onto a frequency and track changes, making it an effective tool for maintaining synchronization in communication systems. Additionally, PLLs can help eliminate noise and improve the quality of the signal, which is particularly important in digital communications.The applications of variable-frequency oscillators extend beyond radio and communication technologies. They are also used in various industries, including automotive, aerospace, and consumer electronics. For example, in automotive systems, variable-frequency oscillators can be found in engine control units, where they help regulate engine timing and performance. In aerospace, these oscillators are critical for navigation systems, ensuring accurate positioning and tracking.Moreover, the rise of wireless technology has significantly increased the demand for variable-frequency oscillators. As wireless communication becomes more prevalent, the need for devices that can adapt to changing frequencies has grown. This adaptability is essential for maintaining stable connections in environments with multiple overlapping signals, such as urban areas.In conclusion, the variable-frequency oscillator is a fundamental component in the field of electronics, enabling a wide range of applications through its ability to generate adjustable frequency signals. Its importance cannot be overstated, as it facilitates communication, navigation, and control systems across various industries. As technology continues to evolve, the role of variable-frequency oscillators will likely expand, underscoring their significance in our increasingly connected world.

在电子和通信系统的领域中，术语可变频率振荡器指的是一种关键组件，它能够生成不同频率的振荡信号。该设备在众多应用中发挥着至关重要的作用，从无线电传输到雷达技术。理解可变频率振荡器的工作原理，可以为我们提供关于其在现代技术中的重要性的宝贵见解。可变频率振荡器旨在产生一个连续波信号，其频率可以在预定范围内进行调整。改变频率的能力对于需要调谐到不同频道或频率的应用至关重要。例如，在无线电广播中，可变频率振荡器允许发射机在不同频率之间切换，使其能够向各种无线电台发送信号而不发生干扰。可变频率振荡器的操作通常涉及电子元件，如电容器、电感器，有时还有电阻器。这些组件共同作用，创建一个可以微调的振荡电路。输出信号的频率由这些组件的值决定；通过改变它们，工程师可以根据需要修改频率输出。这种可调性使得可变频率振荡器与固定频率振荡器区分开来，后者只能在特定频率下生成信号。最常见的可变频率振荡器类型之一是锁相环（PLL）。PLL能够锁定到一个频率并跟踪变化，使其成为维护通信系统同步的有效工具。此外，PLL还可以帮助消除噪声，提高信号质量，这在数字通信中尤为重要。可变频率振荡器的应用超越了无线电和通信技术。它们还被广泛应用于汽车、航空航天和消费电子等各个行业。例如，在汽车系统中，可变频率振荡器可以在发动机控制单元中找到，在这里它们有助于调节发动机的时序和性能。在航空航天中，这些振荡器对导航系统至关重要，确保准确的位置和跟踪。此外，无线技术的兴起显著增加了对可变频率振荡器的需求。随着无线通信的普及，能够适应变化频率的设备的需求也在增长。这种适应性对于在多个重叠信号环境（如城市地区）中保持稳定连接至关重要。总之，可变频率振荡器是电子领域中的基本组件，通过其生成可调频率信号的能力，促进了广泛的应用。它的重要性不容小觑，因为它支持各个行业的通信、导航和控制系统。随着技术的不断发展，可变频率振荡器的作用可能会扩展，进一步凸显其在我们日益互联的世界中的重要性。