![]() The FFT as bridge between the Time Domain and the Frequency Domain ![]() RC Low Pass Filter (Simulations in the Time and in the Frequency Domain / FFT) You can download them from this site (download possibility is following to the tutorial download).Įverything is now terminated and translated and thus you find these themes and projects in part 1 of the tutorial: Part 2 shows Harmonic Balance Simulations on 51 pages.įor chapter 14 (Narrow Bandpass Filter 10,7 MHz) you will need three additional programs. Part 1 shows simulations in the Time Domain and the Frequency Domain using a huge number of projects (= 230 pages, last added chapter is "development of a 1575 MHz You can download from this site an english tutorial in two parts: Here comes a new, powerfull and free of charge RF CAD program which simulates in the Frequency Domain and in the Time Domain and can use "Harmonic Balance". New: RF circuit simulation using qucsstudio Hopefully, this article was helpful in expanding your knowledge in regards to designing and simulating in PSpice.Leichter Einstieg in die SPICE-Simulation Lastly, an exercise is provided to reinforce the concept of low-pass filter design in this tutorial. You can utilize this concept to design and simulate more complex filters in PSpice. It covers step-by-step procedures with clear and concise explanations and examples to help us better understand the concept. In conclusion, this tutorial provides an in-depth overview of how to design and simulate a low-pass filter in PSpice. ![]() Try doing the frequency domain analysis of any of the circuits we have done previously.In the frequency domain, we can say that the input source is allowing all the frequencies to pass straight through it. The straight line represents that the input source is constant (neither increasing nor decreasing with time), unlike that of the capacitor voltage. The green line at the top represents the input AC sweep of the AC source connection. The output plot in frequency domain, or the bode plots of a simple low-pass filter, is given in the figure below. This frequency is present at -3 dB of the maximum magnitude, which is 0.707, or 70% of the maximum magnitude. The limit of the frequencies up to which the circuit allows is known as the critical frequency and is given by the formula. Introduction to Low-Pass FiltersĪ low-pass filter is such a filter that only allows frequencies with lower magnitude to pass through it and blocks the higher frequencies, as the name suggests. At the end of the tutorial, we have provided an exercise for you to do on your own, and in the next tutorials, we will assume that you have done those exercises, and we will not explain the concept regarding them. After that, we will simulate the circuits using PSpice with the step-by-step approach to simulate a circuit, and then we will compare the results with the theoretical discussion (which should be the same). At the start, we will provide a brief and concise introduction to filters, specifically low-pass filters, and bode plots with an explanation of the output they will show. The purpose of a low-pass filter is to allow only the lower frequencies to pass through the circuit and block the higher frequencies. In this tutorial, I will explain the workings of a low-pass filter.
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