In the low noise amplifier (LNA) design, one of the critical metrics engineers grapple with is noise figure (NF). NF quantifies how much a device degrades the signal-to-noise ratio, crucial in applications where signal fidelity is paramount. Circles of Constant …

In electronic engineering, understanding noise figure is paramount, especially when it comes to designing communication systems and amplifiers. In a 2-port network, noise figure plays a pivotal role in determining the system’s overall noise performance. Let’s delve deeper into the …

The concept of Noise Figure holds significant importance in the evaluation and optimization of electronic devices such as Low Noise Amplifiers (LNAs), Mixers, and receivers, which play crucial roles in signal processing and communication systems. Ensuring minimal Noise Figure in …

Introduction: Noise Figure (NF) is a fundamental metric that measures the degradation of the signal-to-noise ratio (SNR) as it traverses through a device or system. It serves as a vital parameter in evaluating the noise performance of various electronic components, …

Gain Method: Noise Figure (NF) can be measured, with a spectrum analyser, by using a procedure called Gain-Method. Note that following condition needs to be met by the Device-under-Test (DUT) for correct measurement: DUT (e.g., Receiver) output noise floor should …

Example 2: Calculate the total NF for the below-given diagram: To calculate the total noise figure for this cascaded stage, we’re going to calculate the total noise factor. The linear expression for total noise factor is equal to the noise …

Example 1: Calculate the following for the below given RF circuit: Total Noise Figure (NF) of the system Input noise floor (Bandwidth = 5 MHz) Total PIIP3 Important points to remember: As you can see from the given inputs, the …

Noise Floor: The noise floor is the input-referred total noise power. If we have total noise at the output, we can refer it to the input. Total noise power means that the noise power of the Rs and the noise …

The concept of noise in cascaded stages is similar to that of linearity, where the aim was to find the total IIP3. Read about Non-linearity in Cascaded stages. Here we need to find the total Noise Figure, NF. If we …

Find the Noise Figure for the given circuit This circuit consists of source Vs and two resistors Rs and Rp. Rs is the source resistance, and Rp is the parallel resistance. The noise effect at the output of the circuit …