Link Budget Analysis

Analog Communication Systems

This set of Digital Communications Multiple Choice Questions & Answers (MCQs) focuses on “Link budget analysis”.

1. Link budget consists of calculation of
a) Useful signal power
b) Interfering noise power
c) Useful signal & Interfering noise power
d) None of the mentioned

2. Link budget can help in predicting
a) Equipment weight and size
b) Technical risk
c) Prime power requirements
d) All of the mentioned

3. Which is the primary cost for degradation of error performance?
a) Loss in signal to noise ratio
b) Signal distortion
c) Signal distortion & Loss in signal to noise ratio
d) None of the mentioned

4. Which factor adds phase noise to the signal?
a) Jitter
b) Phase fluctuations
c) Jitter & Phase fluctuations
d) None of the mentioned

5. Antennas are used
a) As transducer
b) To focus
c) As transducer & To focus
d) None of the mentioned

6. Mechanism contributing to a reduction in efficiency is called as
a) Amplitude tapering
b) Blockage
c) Edge diffraction
d) All of the mentioned

7. Space loss occurs due to a decrease in
a) Electric field strength
b) Efficiency
c) Phase
d) Signal power

8. Antenna’s efficiency is given by the ratio of
a) Effective aperture to physical aperture
b) Physical aperture to effective aperture
c) Signal power to noise power
d) Losses

9. Effective radiated power of an isotropic radiator can be given as a product of
a) Radiated power and received power
b) Effective area and physical area
c) Transmitted power and transmitting gain
d) Receiving power and receiving gain

10. According to reciprocity theorem, _____ and _____ are identical.
a) Transmitting power and receiving power
b) Transmitting gain and receiving gain
c) Effective area and physical area
d) None of the mentioned

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