heterodyne frequencymeter

简明释义

外差式频率计

英英释义

例句

1.In the lab, we calibrated the heterodyne frequencymeter 外差频率计 to ensure precise measurements.

在实验室，我们校准了外差频率计以确保精确的测量。

2.The engineer used a heterodyne frequencymeter 外差频率计 to accurately measure the frequency of the radio signal.

工程师使用了一个外差频率计来准确测量无线电信号的频率。

3.The heterodyne frequencymeter 外差频率计 is essential for testing communication equipment.

外差频率计对于测试通信设备至关重要。

4.We compared the results from the heterodyne frequencymeter 外差频率计 with theoretical values.

我们将外差频率计的结果与理论值进行了比较。

5.During the experiment, the heterodyne frequencymeter 外差频率计 helped us identify unwanted frequencies.

在实验过程中，外差频率计帮助我们识别不必要的频率。

作文

In the realm of electronics and communications, precision measurement is crucial for the development and performance of various devices. One of the essential tools used for this purpose is the heterodyne frequencymeter, which plays a significant role in measuring frequencies with high accuracy. The heterodyne frequencymeter operates on the principle of mixing two frequencies to produce a new frequency that is easier to measure. This technique allows for the detection of signals that may be too weak or too close in frequency for direct measurement. The basic operation of a heterodyne frequencymeter involves taking an input signal whose frequency needs to be measured and mixing it with a reference frequency generated by a local oscillator. The result of this mixing process is a difference frequency, which is the absolute value of the difference between the two original frequencies. By measuring this difference frequency, the heterodyne frequencymeter can provide a highly precise reading of the input frequency. One of the key advantages of using a heterodyne frequencymeter is its ability to measure a wide range of frequencies, from low frequencies in the kilohertz range to high frequencies in the gigahertz range. This versatility makes it an indispensable tool in various fields, including telecommunications, radio broadcasting, and laboratory research. Moreover, because the measurement is based on the difference frequency, the heterodyne frequencymeter can effectively reduce the impact of noise and improve measurement accuracy. The design of a heterodyne frequencymeter typically includes several components: a local oscillator, a mixer, and a frequency counter. The local oscillator generates a stable reference frequency, while the mixer combines this frequency with the input signal. The resulting difference frequency is then sent to a frequency counter, which displays the measured frequency. Some advanced models may also include additional features such as digital signal processing capabilities, allowing for even more refined measurements. In practical applications, the heterodyne frequencymeter is widely used in the field of radio frequency (RF) engineering. For instance, engineers utilize this tool to calibrate RF equipment, ensuring that transmitters and receivers operate at their intended frequencies. Additionally, it is used in the testing and development of new communication technologies, where precise frequency measurement is essential. Moreover, in research laboratories, scientists employ the heterodyne frequencymeter to study various phenomena related to electromagnetic waves. Its ability to accurately measure frequencies enables researchers to explore new materials and technologies, contributing to advancements in fields such as photonics and quantum computing. In conclusion, the heterodyne frequencymeter is a vital instrument in the world of frequency measurement. Its innovative approach to mixing frequencies allows for high-precision measurements across a broad spectrum of applications. As technology continues to evolve, the importance of tools like the heterodyne frequencymeter will only increase, driving further advancements in electronics and communications.

在电子和通信领域，精确测量对于各种设备的发展和性能至关重要。其中一种用于此目的的重要工具是异频计，它在高精度频率测量中发挥着重要作用。异频计的工作原理是将两个频率混合以产生一个更易于测量的新频率。这种技术允许检测可能太弱或频率过于接近而无法直接测量的信号。异频计的基本操作包括将需要测量频率的输入信号与本地振荡器生成的参考频率混合。这个混合过程的结果是一个差频率，它是两个原始频率之间绝对值的差。通过测量这个差频率，异频计可以提供输入频率的高精度读数。 使用异频计的一个关键优点是能够测量从千赫兹范围的低频到吉赫兹范围的高频的广泛频率。这种多功能性使其成为电信、广播和实验室研究等多个领域不可或缺的工具。此外，由于测量基于差频率，异频计可以有效减少噪声的影响，提高测量精度。 异频计的设计通常包括几个组件：本地振荡器、混频器和频率计。本地振荡器生成稳定的参考频率，而混频器则将该频率与输入信号结合。得到的差频率随后被发送到频率计，显示测量的频率。一些先进型号还可能包括额外的功能，如数字信号处理能力，从而实现更精细的测量。 在实际应用中，异频计广泛用于射频（RF）工程领域。例如，工程师利用这一工具校准射频设备，确保发射器和接收器在其预定频率下运行。此外，它还用于新通信技术的测试和开发，其中精确的频率测量至关重要。 此外，在研究实验室中，科学家们使用异频计研究与电磁波相关的各种现象。其准确测量频率的能力使研究人员能够探索新材料和技术，为光子学和量子计算等领域的进步做出贡献。 总之，异频计是频率测量领域的重要仪器。它创新的频率混合方法使得在广泛应用中进行高精度测量成为可能。随着技术的不断发展，像异频计这样的工具的重要性只会增加，推动电子和通信领域的进一步发展。