1. Give the circuit diagram of a single amplifier biquad, obtain its transfer function and identify the filter parameters.

2. Design a 4-pole Butterworth high pass filter with cut-off frequency 30 kHz. What is the formula for its gain as a function of frequency? What is its attenuation (in dB) at f fc

3. Determine the transfer function V2 V1 for the circuit shown in Figure 1 considering non-ideal op-amp with A wt/s. Identify the nature of filter response and determine the filter parameters.
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4. Design a Sallen-Key low pass filter with the following specifications:

fc 4·8 kHz, Q 5 and d.c. gain H 3.

Also explain the concept of cascading technique in higher order filters.

5. Design a fourth order Butterworth filter with half power frequency of roo 2,00,000 rad/sec source load is R 3 kn. The design should make use of FDNRs.

6. Design a KHN (Universal Active Filter) with its transfer function and all necessary filter parameters.

7. Write short notes on any two of the following:

(a) Chebyshev Approximation Phase Error Compensation Frequency-Dependent Negative Resistors

8. Draw the circuit diagram of a Generalized Impedance Converter as given by Antoniou and show how a grounded inductor can be simulated using the above circuit.

9. Explain the method of synthesis of LC ladder network using gyrator. Discuss the leap-frog design technique of low pass filters.

10. The following specifications are given for a Chebyshev low pass filter:

wp ws 2·33, a max 0·5 dB, a min 22 dB What is the degree of the filter which realises these specifications Compare this degree with the degree of a maximally flat filter with same specifications.