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Engineering BE Electronics and Computer Science Sem 8 December 2022 2022 Rf Design 1 Question Paper - Mumbai University | munotes

December 2022 Question Paper.pdf
ELECTRONICS ELECTRONICS & COMPUTER SCIENCE · 1 May 2025

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  1. Q1 Solve any four What is the stability in Amplifier? Why the stability parameter required though A and K are there? Explain the power amplifier performance parameters D working principal of Image Reject Mixer Draw one port oscillator circuit.Find value of maximizes oscillator power 20 marks
  2. Q2 A) Design a low pass filter whose input and output are matched toa 50.Q impedance with cut off frequency of 3 GHz, equi-ripple of and rejection of at least 40 dB at approximately twice the cut-off frequency 10 marks
    • B) Design an amplifier for a power gain of 15 dB at a frequency of if the 10 selected bipolar transistor with Vcr = 4V and Ic = 5 mA has following S parameters
  3. Q3 A) An amplifier is having gain of 11 dB at 4 GHz. Plot constant gain circles for 10 marks
    • B) An N =3 Chebyshev band pass filter is to be designed with 3 dB pass band ripple. 10 The centre frequency is at 2.4 GHz and the filter has to meet bandwidth requirement of 20%. The filter has to be inserted into 50Q characteristics line impedance Find the inductive and capacitive elements
  4. Q4 A) What is the indirect frequency synthesis? What is the effect of choice of reference frequency (fr) on the performance of frequency synthesizer? 10 marks
    • B) Explain in detail phase noise and its effect on oscillator design. 10
  5. Q5 A) Explain LISN in detail and how it is useful in conducting EMI tests. 10 marks
    • B) What is shielding? Explain shielding effectiveness. 10
  6. Q6 A) Explain variable modulus along with its expression. 10 marks
    • B) What is ESD? Model ESD waveform and explain equivalent circuit model forESD. 10 TABLE 8.4 Element Values for Equal-Ripple Low-Pass Filter Prototypes = 1, = 1, N = 1 to 10, 0.5 dB and 3.0 dB ripple)
    • 0.5 dB Ripple
    • 3.0 dB Ripple Source: Reprinted from G. L. Matthaei, Young, and E. M. T. Jones, Microwave Filters, Impedance-Matching Networks, and Coupling Structures, Artech House, Dedham. Mass.,1980, with penmission

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