Noise in any RF system is signals with random amplitude and frequency. It can be shown as voltage or current, which is changing all the time. Depending on frequency distribution, it can extend in various forms across the frequency spectrum, …
The design of an RF system consists of many different blocks, and sometimes it might include two amplifiers to amplify the weak signal. For example, the below figure shows the design with LNA and an additional amplifier for amplifying the …
Intermodulation products are unwanted signals. They leak into other channels and creates distortion. As we discussed, not all the components cause problems, and most of them can be ignored and filtered out as the amplitude of harmonics decreases as the …
Intermodulation is the most important drawback of a non-linear system. It is similar to the desensitization effect discussed in previous sections. In this case, instead of one signal, we have two unwanted signals with high amplitude than the desired signal, …
The third drawback of a non-linear system is the desensitization effect. The previous two drawbacks were Harmonic Distortion and Gain Compression. The below figure shows the condition where we have the desired signal and unwanted signal (noise). The unwanted off-channel …
Gain compression is the most important problem that is faced in a non-linear system. Read about the effects of Non-Linearity in RF systems. Harmonic distortion is one of the drawbacks of having a non-linear system that is discussed in the …
In the previous section effects of Non-Linearity in RF systems, we read about non-linearity and its impact on the RF system. This section shows the drawbacks or problems faced with having a non-linear system. In this example, there is a …
Linearity: Linearity is the property of a mathematical relationship or function, which can be graphically represented as a straight line. Linearity can be graphically represented as a straight line. We always expect to have this kind of outputs in our systems but …
MOS Transistor parasitic capacitances are formed due to the separation of mobile charges at various regions within the structure. Parasitic Capacitances are the unwanted component in the circuit which are neglected while working in low-frequency. But cannot be avoided when …
In this circuit, the Vgs is the input signal applied between gate and source terminal, and we know that the change in drain current is linearly proportional to Vgs. In this model, if you consider the effect of channel and …