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ENEX 301Bachelor in Electronics, Communication and Information Engineering ยท Semester 52 Papers Available

Filter Design

Past examination question papers and complete curriculum syllabus for Filter Design (ENEX 301), Bachelor in Electronics, Communication and Information Engineering Semester 5 under Institute of Engineering (IOE), Tribhuvan University.

Sem 5 Subjects (6)View Full Semester Overview โ†’
ENSH 304Probability and StatisticsENCT 305Artificial IntelligenceENEX 301Filter DesignENEX 302Embedded SystemsENEX 303Propogation and AntennnaENEX 325-344Elective I
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5th-sem_Filter Design.pdf

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Most Frequently Asked Questions

Top recurring IOE board exam questions for Filter Design with verified mark schemes, formula notation, and recurrence frequency.

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Year-wise & Session-wise Exam Papers

Complete questions from each exam session (Regular & Back exams from 2082 to 2069) for Filter Design. Click any session paper to expand.

Showing 377 questions across 23 exam session papers
Institute of Engineering โ€ข 2083 Baishakh Board Examination
Q1[2 Marks]Introduction
Discuss the reasons why analog filter design remains relevant in the modern digital era despite rapid advancements in the digital signal processing. Support your answer with suitable examples of real-world applications. Compare active and passive filters. What is frequency scaling? Explain with necessary derivations.
Q2[1 Marks]Approximation Methods
What is all-pass filter? State its importance. Derive a transfer function of a second order constant delay filter.
Q3[2 Marks]Properties and Synthesis of Passive Networks
Determine whether the following functions are RC driving point admittance functions or not. State with reason. (a) (b) Pick one of the valid RC admittance functions and realize it in parallel Foster form as well as RC ladder form.
Q4[1 Marks]Design of Resistively-Terminated Lossless Filters
What is transmission coefficient? What information do you get from the transmission coefficient? Design a second order Butterworth low pass filter using lossless ladder with equal termination of i.e. and (Refer Table 1)
Q5[1 Marks]Sensitivity
What do you understand when someone tells you that sensitivity of with respect to is -7? Compute the sensitivity expression for cutoff frequency and quality factor of RLC lowpass filter.
Q6[3 Marks]Introduction
Derive expression to calculate the order of a Butterworth low pass filter. Use this expression to calculate the order of Butterworth low pass filter with the following specifications: Maximum passband attenuation: 3 dB at 1 kHz Minimum stopband attenuation: 40 dB at 2.5 kHz Also determine the pole locations and transfer function.
Q7[4 Marks]Introduction
Design a band-pass filter with center frequency 10 kHz and bandwidth 4 kHz using a normalized low-pass filter with transfer function .
Q8[1 Marks]Design of Resistively- Terminated Lossless Filters
Define zeros of transmission. How zeros of transmission can be realized? Explain with suitable example.
Q9[4 Marks]Introduction
Realize an active filter using non-inverting op-amp configuration with a zero at and a pole at having high frequency gain of .
Q10[5 Marks]Introduction๐Ÿ“ Diagram in Paper
Draw the circuit diagram of Tow-Thomas Biquad circuit and derive its transfer function. Design a low pass filter using Tow Thomas Biquad circuit with poles at and dc gain of . The final circuit should contain practically realizable values.
Q11[2 Marks]Frequency Transformation
What is Bruton Transformation? How can you simulate grounded inductor using FDNR? Explain with necessary figures and derivations.
Q12[6 Marks]Approximation Methods
Design the fourth order Butterworth low-pass filter using a leapfrog simulation. Your final design should accommodate half power frequency of and should have practically realizable elements in it. [Refer Table 2]

Curriculum Syllabus & Course Topics

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Full Syllabus (PDF)Micro Syllabus (PDF)
Chapter-wise Units & Micro-Syllabus Topics (8 Units)

  1. 1. Introduction

    • 1.1Filter, its evolution and importance
    • 1.2Lowpass, highpass, bandpass, bandstop, allpass, passive and active filters
    • 1.3Filter response: Ideal (Brick wall) response and practical response
    • 1.4Filter parameters: Gain, attenuation, passband, stopband and transition band
    • 1.5Filter transfer function, frequency response, poles, zeros and their roles
    • 1.6Normalization and de- normalization in filter design
    • 1.7Impedance (Magnitude) scaling and frequency scaling

  2. 2. Approximation Methods

    • 2.1Approximation and its importance in filter design
    • 2.2Low pass approximations methods
    • 2.3Butterworth approximation
    • 2.4Chebyshev (Chebyshev type I) approximation
    • 2.5Inverse Chebyshev (Chebyshev type II) approximation
    • 2.6Cauer (Elliptic) approximation
    • 2.7Bessel-Thomson response
    • 2.8Delay equalization

  3. 3. Frequency Transformation

    • 3.1Frequency transformation and its importance in filter design
    • 3.2Low pass to high pass transformation
    • 3.3Low pass to band pass transformation
    • 3.4Low pass to band stop transformation

  4. 4. Properties and Synthesis of Passive Networks

    • 4.1One-port passive circuits
    • 4.2Two-port passive circuits

  5. 5. Design of Resistively- Terminated Lossless Filters

    • 5.1Properties of resistively- terminated lossless ladder circuit, transmission and reflection coefficients
    • 5.2Synthesis of LC ladder circuits to realize all-pole low pass functions and functions with finite transmission zeros

  6. 6. Design of Active Filters

    • 6.1First order active filters (Bilinear)
    • 6.2Second order active filters (Biquads)
    • 6.3Higher order active filters

  7. 7. Sensitivity

    • 7.1Sensitivity and importance of sensitivity analysis
    • 7.2Single parameter sensitivity
    • 7.3Centre frequency and Q- factor sensitivity
    • 7.4Sensitivity of biquads and passive filters

  8. 8. Other Filters

    • 8.1Switched Capacitor Filters
    • 8.2Current mode filters
    • 8.3Adaptive Filters
    • 8.4Current Conveyors

Examination Scheme & Marks Distribution

Evaluation Structure

  • Final Board Theory Exam: 60 Marks (Pass mark: 24)
  • Internal Assessment: 40 Marks (Pass mark: 16)
  • Practical / Lab Exam: 25 or 50 Marks (Continuous lab evaluation + viva, where applicable)

* This is the general current IOE 60/40 scheme; verify course-specific details in the syllabus above.

Exam Preparation Guidelines

  • Review the 2 available past examination papers to identify recurring patterns, core problem types, and chapter weightage.
  • Cross-reference key answers with official syllabus units, standard textbooks, and lecture notes.
  • Structure answers with labeled diagrams, concise bullet points, and highlight final answers in numerical solutions.
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Curriculum Syllabus & Marking Scheme