passband

简明释义

英[ˈpɑːsˌbænd]美[ˈpæsˌbænd]

n. 通频带，滤波通带

英英释义

单词用法

同义词

反义词

例句

1.The theoretical results show that for TM waves there exist frequency passband (s) and stopband (s) which can be switched into each other by varying the power.

理论分析表明，非线性TM表面波存在频率通带和禁带，通过调节导波功率可以实现通带和禁带之间的转换。

2.Then, a solution based on Digital Up Converter(DUC) was proposed, which implemented the conversion of a complex digital baseband signal to a real passband signal.

然后采用正交数字上变频（DUC）技术进行基带信号数字域调制和频率变换。

3.In order to achieve flatter tops and sharper rolloff in the passband, the multiple-ring higher order structure is employed.

为实现通带内频率响应平坦度高、滚降时间快的滤波效果，采用多环结构形成的高阶滤波器。

4.This reduces gain but widens the amplifier's passband.

这方法降低了增益，但加宽了放大器的通频带。

5.The Contour filtering system provides a gentle perturbation of the IF filter passband.

轮廓过滤系统提供了一个温和的摄动的IF滤波器通。

6.Also, the influence of the parameters of the coupling loops on the passband response is analyzed for a singles...

同时，分析了单级振子YIG滤波器中耦合环参数对通带响应的影响。

7.The modification of the notch filter made the extra phase-shifting introduced to the control system passband reduced and so the control performance was improved.

对陷波滤波器进行了改进，使得引入控制系统通频带的附加相移减小，降低了对系统控制性能的影响。

8.According to "virtual short" and "virtual-off" feature, available to the circuit passband voltage gain and pass-band cut-off frequency.

根据“虚短”和“虚断”的特点，可得到电路的通带电压放大倍数和通带截止频率。

9.The filter allows signals within the passband 通带 to pass through while attenuating others.

该滤波器允许在passband 通带内的信号通过，同时衰减其他信号。

10.In radio communications, the passband 通带 determines the range of frequencies that can be transmitted.

在无线电通信中，passband 通带 决定了可以传输的频率范围。

11.Adjusting the passband 通带 of the equalizer can enhance the audio experience significantly.

调整均衡器的passband 通带可以显著提升音频体验。

12.The passband 通带 of this amplifier is crucial for ensuring high-quality sound output.

此放大器的passband 通带 对于确保高质量声音输出至关重要。

13.A narrow passband 通带 can help reduce interference from unwanted signals.

窄的passband 通带 可以帮助减少来自不需要信号的干扰。

作文

In the field of telecommunications and signal processing, the concept of a passband (通带) plays a crucial role in determining how signals are transmitted and received. A passband refers to the range of frequencies that can pass through a filter without significant attenuation. Understanding this concept is essential for engineers and technicians who work with various types of filters, such as low-pass, high-pass, band-pass, and notch filters. To illustrate the importance of a passband, consider a scenario where a radio station broadcasts a signal. The station operates at a specific frequency, and it is essential that the receiver can filter out all other frequencies while allowing the broadcast frequency to pass through. This is where the passband comes into play. The passband of the receiver must be designed to encompass the frequency of the broadcast while rejecting interference from other signals. Moreover, the width of the passband is equally important. A wider passband allows more frequencies to pass through, which may be beneficial in certain applications, such as audio processing where a broad spectrum of sounds is desired. However, a wider passband may also allow unwanted noise to enter the system, which can degrade the quality of the signal. Conversely, a narrower passband can result in a cleaner signal but may exclude some desired frequencies. In the realm of digital communications, the concept of a passband is also applicable. For instance, when data is transmitted over a network, it is often modulated onto a carrier wave that operates within a specific passband. This modulation technique allows multiple signals to occupy the same physical medium without interfering with each other, a process known as multiplexing. By carefully designing the passband of each channel, engineers can maximize the efficiency of data transmission. Furthermore, the concept of a passband extends beyond telecommunications into areas such as audio engineering and medical imaging. In audio engineering, equalizers manipulate the passband of audio signals to enhance or suppress certain frequencies, allowing sound engineers to achieve the desired tonal balance in music production. In medical imaging, particularly in techniques like MRI, the passband of the imaging system determines the range of frequencies used to create images of the body, affecting both the resolution and quality of the images produced. In conclusion, the term passband (通带) is a fundamental concept that spans various fields, including telecommunications, audio engineering, and medical imaging. Its significance lies in its ability to define the range of frequencies that can be effectively transmitted or processed, impacting the quality and integrity of signals. As technology continues to evolve, the understanding and application of passband will remain vital for advancements in these domains. Engineers and technicians must continue to explore and innovate around this concept to improve the performance of systems that rely on precise frequency management.