Construction of Noise Figure
The noise figure of an element is a necessary parameter and various methods can be used for measuring this parameter. Let us see how
Noise Figure Measurement circuit
The basic step before using any device is to send an input signal to the device. The final value of the noise figure is generated by certain instruments some of which have been mentioned below
- Noise figure measurement meter: A meter is designed in laboratories that calculate the noise figure of a given system and the signal associated with the system. These devices are necessary tools since they are efficient and easy to use. In addition to this, they provide accurate results.
- Noise figure analyzers: These are devices that provide a very quick and efficient method for measuring the noise figure of an item. They are an ideal choice mainly because of the accurate results they can provide with minimum error.
- Spectrum analyzer: It is another practical device that is useful for measuring noise figures. The built-in circuit of this device makes it easy to predict the noise figure.
Noise Figure
Often while dealing with signals in electronics and communication systems, we encounter distortion in signals due to noise. Noise is an unwanted disturbance that can attenuate our signal which disrupts making it difficult to study the signals. In this article, we will study the noise figure which is an important instrument used for measuring the quality of signals.
Later, we will understand the work behind calculating the noise figure. Through a diagram, we will also see the formula used for calculating noise figures with a physical understanding of the formula. Some solved examples have been provided to enhance the understanding of readers about the topic. We will look at the advantages, disadvantages, and applications of noise figures in the real world. In the end, we will conclude the article with some frequently asked questions that readers can refer to
Table of Content
- Noise Figure
- Working Principle
- Mathematical Expression
- Construction
- Solved Examples
- Applications
- Advantages
- Disadvantages