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# Low pass filter

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Low Pass filter fo dummies

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### Low pass filter

1. 1. BEB20203 SIGNAL AND SYSTEM Low-PASS FILTER Team Members: 1) Muhamad Amir Hamzah Bin Ahmad Zamri CE120245 2) Muhd Iqbal Syarif bin Khairul Anuar AE110199 3) Mohamad Firdaus bin Daud AE110148 4) Nur Syafiah binti Tajul Urus CE120181 5) Nursyazwani bt. Abd. Jalil CE120010 Section : 03 Lecturer’s Name : Prof. Madya Dr Mohammad Faiz Liew Bin Abdullah
2. 2. INTRODUCTION  A low-pass filter is a filter that passes low frequency signal and selectively attenuates higher frequency signals.  It is short pulses are exceptionally rich in high frequency components, and a low pass filter can be used to filter out those high frequency components.  Example : - Blurring of images - Digital filters for smoothing sets of data - Acoustic barriers
3. 3. OBJECTIVE To study the characteristics of passive filter by obtaining the frequency response of low-pass filter. To measure the cut-off frequency, fc of low-pass filter. To plot the frequency of low-pass filter by using MATLAB and compare the results with the measurement. To study the output waveform when a certain waveform is apply to the input of the low- pass filter.
4. 4. FLOW CHART
5. 5. RESULT & ANALYSIS 2) FINDING THE VALUE OF THE NUMERATOR 1) CALCULATE THE VALUE OF COMPONENT 3) DESIGN CONSTRUCT CIRCUIT IN LAB 4) PLOT MAGNITUDE AND PHASE VS FREQUENCY IN MATLAB
6. 6. Frequency/Hz CH2/Peak-Peak CH1/Volt(Input) 100 -38.42 5 150 -39.93 5 200 -39.93 5 250 -40.07 5 300 -40.21 5 350 -40.35 5 400 -40.5 5 450 -40.8 5 500 -40.95 5 RESULT FROM THE LAB
7. 7. THE GRAPH FOR LAB RESULTS
8. 8. Frequency Response Curve Using MATLAB
9. 9. CONCLUSION Based on this project we already build circuit consisting of resistors and capacitor. The value also has been measured by using MATLAB. There is a slightly different in the values of cut off frequency from several results because the resistors and capacitors obtained have it own tolerance. The project has been done successfully because the objective was achieved.
10. 10. CONCLUSION Based on this project we already build circuit consisting of resistors and capacitor. The value also has been measured by using MATLAB. There is a slightly different in the values of cut off frequency from several results because the resistors and capacitors obtained have it own tolerance. The project has been done successfully because the objective was achieved.