Maximizing Bandpass Filter Bandwidth: Practical vs Theoretical Approaches

[romanus_romeo]

Cutoff Freq. = 1/2piRC.
Theoretical bandwidth = 5000 - 1000 (APP) = 4000

But when I do it practically Or simulate as in the pic
Bandwidth = 10000(Around).

I asked the teachers in my college they say I did the practicals wrong. Those teachers gave signatures to everyone in the class even when they got the answers as I had.

Please help. The date for the journal submission are near.

 

[romanus_romeo]

31 Views and not a single comment or answer ! Ahh Never mind I got the ans.

well I asked my teacher at college. She is very cool! She told me the following.

f = 1/2piRC for LowPass and HiPass Filter. When the cutoff frequency of lowpass and hipass sections in Bandpass is close to each other, then the input that the other section receives is not full (ie. Vo of one section should be app= Vin) which causes the Maximum output voltage to be very less. Also following formulas can be easily understood for one interested.

Vo R1 * XC2
-- = ------------------------------------------
Vin sqrt(R1^2 + Xc1^2) * sqrt(R2^2 + Xc2^2)

When the cutoff of high pass is reached then R1 = Xc1 and R2 = Xc2. Also there are related searches on the google.

One should get more that 0.707 Vi as output, inorder get the proper results.

 

[piercas]

it is important to approach any problem or experiment with a critical and analytical mindset. In this case, it seems that there may be some discrepancies between the theoretical and practical approaches to maximizing the bandwidth of a bandpass filter.

Firstly, it is important to understand that the theoretical approach involves calculations based on ideal conditions and assumptions, which may not always align with real-world scenarios. Therefore, it is not uncommon for there to be differences between the theoretical and practical results.

However, it is also important to ensure that the practical approach is conducted accurately and with precision. Small errors or discrepancies in the experimental setup or measurements can lead to significant differences in the results. In this case, it is concerning that the teachers in your college have given signatures to everyone in the class, even though there may have been errors in the practical approach.

it is important to critically evaluate the results and identify any potential sources of error. If there are discrepancies between the theoretical and practical results, it is important to investigate and understand the reasons behind them. This can lead to a deeper understanding of the concept and can also help to improve future experiments and approaches.

In terms of the upcoming journal submission, it may be beneficial to discuss the discrepancies and potential sources of error in your experimental setup in the paper. This can show your critical thinking skills and can also lead to a more comprehensive and accurate understanding of the topic. It is also important to communicate with your teachers and discuss any concerns or discrepancies in the results. Collaboration and open communication are key in scientific research and can lead to a better understanding of the topic.