Third-Order Wideband Bandpass Filter circuit shows the function and features of the filter of broadband bandpass made through cascading the low-pass and a high-pass filter of second-order. Therefore, bandpass of 300 Hz to 3 kHz voice filter is created.

Arrange the generator operation to 1 kHz and the period base of oscilloscope to 0.2 ms/DIV. Enhance the input intensity to 1 kHz at the period up to 4 kHz and continuously noticing the highest resulted voltage. Now the question is how these intensities modified the influence the resulted voltage? Is this weakening? What is the benefit of filter at fin = 3 kHz? Is this near to 0.7? If it is so then what is the intensity known as? This is the greater cutoff intensity.

 Doing the similar notification including the input intensity to be reduced of nearly 100 Hz at the time decreased to nearly 250 Hz and accordingly managing the time base of the oscilloscope. Managing the input intensity unless and until the benefit of the filter gets the 0.7 voltage. What is the intensity known as? This is the decreased cutoff intensity.

 Presently, you should measure the bandwidth of the filter. What will you refer this intensity of 1 kHz? This is the resonant intensity. What happens at that intensity? The benefit of filter includes greater at resonant intensity. What is the equality determination (Q) for filters wideband? Q is similar to 0.5.


The Wide Range Tunable Band Pass Filter Seminar Topic is about the wide range band pass filter. There are different figures and waveforms shown in this study. They are input, magnitude response, and phase response. The waveforms show different frequencies.

Download Wide Range Tunable Band Pass Filter Electronics & Communication Engineering Final Year Seminar Topic.