Exercise: Microwave Communication

Questions for: Microwave Communication

For the strip line in the given figure the capacitance per unit length =
A:
B:
C:
D:
Answer: A

frads/unit length.

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In microwave system the function of mode filter is
A:
to suppress modes with lower cut off frequencies
B:
to suppress modes with higher cut off frequencies
C:
to change mode of wave transmission
D:
both (b) and (c)
Answer: D

Mode filter suppress modes with lower cutoff frequencies.

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Which of the following terminations makes the input impedance of a line equal to characteristic impedance Z0?
A:
line open circuited at far end
B:
line terminated in Z0
C:
line short circuited at far end
D:
line terminated in inductance
Answer: B

If ZL is load impedance and Z0 is characteristic impedance.

Input impedance =. If ZL = Z0 the input impedance = Z0.

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A loss less line is terminated in a circular lines are E lines
A:
SWR = 0
B:
SWE = 0
C:
SWR is finite
D:
SWR = ∞
Answer: C

= finite number and VSWR = finite number.

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The magnitudes of OC and SC input impedances of a transmission line an 100 Ω and 25 Ω. The characteristic impedance is
A:
25 Ω
B:
50 Ω
C:
75 Ω
D:
100 Ω
Answer: B

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