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Week 5 Assignment

The document contains 10 multiple choice questions about microwave integrated circuits and filter design. Specifically, it covers topics like parallel resonant circuits, fractional bandwidth of series resonant circuits, series LC circuits acting as bandstop filters, calculating cutoff frequency of a low pass filter from component values, designing composite filters with constant impedance matching sections, calculating loaded Q factor from external and unloaded Q factors, deriving T-section filter values, transmission line filter periodic response, attenuation slope comparisons of lumped element and transmission line filters, and using Kuroda's identity to replace circuit elements.

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Suresh Thallapelli
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104 views2 pages

Week 5 Assignment

The document contains 10 multiple choice questions about microwave integrated circuits and filter design. Specifically, it covers topics like parallel resonant circuits, fractional bandwidth of series resonant circuits, series LC circuits acting as bandstop filters, calculating cutoff frequency of a low pass filter from component values, designing composite filters with constant impedance matching sections, calculating loaded Q factor from external and unloaded Q factors, deriving T-section filter values, transmission line filter periodic response, attenuation slope comparisons of lumped element and transmission line filters, and using Kuroda's identity to replace circuit elements.

Uploaded by

Suresh Thallapelli
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Microwave Integrated Circuits

Assignment - 5
1) For a parallel resonant circuit, the input impedance at resonance would be ________
a. Minimum
b. Maximum
c. Zero
d. Imaginary
Ans. b. Maximum

2) The fractional bandwidth of a series resonant circuit is _____


a. 1/ωRC
b. 1/RC
c. ωRC
d. RC
Ans. c. ωRC

3) A series LC circuit connected in shunt with the load will act like _______
a. bandstop filter
b. bandpass filter
c. low pass filter
d. high pass filter
Ans. a. bandstop filter

4) The values of L and C of a constant k-section low pass filter are 11μH and 2 nF respectively. The
value of the cut off frequency ωC is ___________ (use the values of L and C given in the question
directly in the formula of ωC)
a. 26.52 Mrad/s
b. 6.74 Mrad/s
c. 13.48 Mrad/s
d. 15.76 Mrad/s
Ans. c. 13.48 Mrad/s

5) The ½ pi section cascaded at the first and last stage of the composite filter have a value of m equal
to _________ generally to provide a nearly constant impedance match.
a. 0.5
b. 0.4
c. 0.6
d. Can't say
Ans. c. 0.6
6) A resonant circuit has an external Q factor of 2 and an unloaded Q factor of 4. The loaded Q factor
is __________
a. 6
b. 1.333
c. 3
d. 2.82
Ans. b. 1.333

7) An m derived T-section introduces an infinite attenuation pole at 2.05 MHz, while the cut of
frequency is 2 MHz. the value of m is _________
a. 0.21
b. 0.42
c. 0.11
d. 0.63
Ans. a. 0.21

8) A transmission line filter has periodic response ________


a. True
b. False
Ans. a. True

9. A lumped element filter provides steeper attenuation slope as compared to the transmission line
filter __________
a. True
b. False
Ans. b. False

10. Using Kuroda's identity, a shunt capacitor can be replaced by _____________


a. series capacitor
b. series inductor
c. shunt capacitor
d. shunt inductor
Ans. b. series inductor

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