STUPIDSID
1(a)
Explain the terms Insertion Loss, Ripple factor and Band -width related to filter design.
5 M
1 (b)
Compare Microstriplines with striplines.
5 M
1 (c)
Explain Simplified Eber's-moll model, for forward active mode of transister.
5 M
1 (d)
Draw equivalent circuit representation of two wire transmission line. Explain primary and secondary parameters for the same.
5 M
2 (a)
Explain Richards transformation and kurodas Identity. How they are used in realization of RF Filter?
10 M
2 (b)
Explain the role of scattering parameter and its's properties at RF and microwaves.
10 M
3 (a)
Derive power consideration for transmission line when.
(i) Load Impedance ZL & source Impedance ZS are mathched.
(ii) ZL is matched and ZS is mismatched.
(i) Load Impedance ZL & source Impedance ZS are mathched.
(ii) ZL is matched and ZS is mismatched.
10 M
3 (b)
A transmission line of characteristics Impedance Z0=50 Ω and d=0.15 λ is terminated with a load impedance of ZL=(25-j 30) Ω.
Find reflection coefficient, input impedance at distance 'd' and VSWR by using Z-smith chart.
Find reflection coefficient, input impedance at distance 'd' and VSWR by using Z-smith chart.
10 M
4 (a)
Explain in brief the principle operation of HEMT and MESFET along with their construction.
10 M
4 (b)
Find the attenuation of 4 element, 2.5 dB ripple, low pass chebyschew filter at \[ \dfrac {W}{W_C}=2.5 \]
10 M
5 (a)
Explain different types of diode model's (RF) and differentiate them with respect to junction capacitance, band gap energy and conductance.
10 M
5 (b)
Explain what is skin depth? Calculate the skin depth for copper and aliminium at 1GHz and 10 GHz and Find the resistance of 10cm wire with diameter of 1mm
\[ 6_{CU}=64.516 \times 10^6 s/m, 6_{Al}=40 \times 10^6 s/m. \]
\[ 6_{CU}=64.516 \times 10^6 s/m, 6_{Al}=40 \times 10^6 s/m. \]
10 M
6 (a)
Derive expression for internal, external and loaded quality factors for standard series and parallel resonant circuit.
10 M
6 (b)
For a transmission line circuit involving source and load terminations of ZG=60 Ω and ZL=50 Ω respectively and Z0=75 &Omgea;. Compute the input power and power delivered to load. Assume length of line to be [ dfrac {lambda}{4} ] with source of VG=8V
10 M
Write short note on :-
7 (a)
Schottky contacts
7 M
7 (b)
Equivalent circuit of Resistor's, Inductor and capacitor
7 M
7 (c)
ABCD parameter
6 M
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