Satellite Communication - Study Mode
[#151] Which of the following statement is not true about delay line cancellers?
Correct Answer
(C) Time delay in one channel of the delay line canceller is one half of the pulse repetition period
[#152] A receiving antenna with a gain of 40 dB looks at a sky with a noise temperature of 15 K. The loss between the antenna and LNA input due to the feed horn is 0.4 dB, and the LNA has a noise temperature of 40 K. The G/T value is
Correct Answer
(C) 20.6 dB/K
[#153] Match List-I with List-II and select the correct answer: List-I (Microwave band) List-II (Frequency used in satellite communication) a. C-band 1. 12 GHz to 14 GHz b. Ku-band 2. 24 GHz to 26 GHz c. Ka-band 3. 20 GHz to 30 GHz 4. 4 GHz to 6 GHz
Correct Answer
(C) a-4, b-1, c-3
[#154] The most probable band width of a transponder in a satellite communication system is:
Correct Answer
(D) 10 GHz
[#155] In satellite communication, scrambling is mainly used for-
Correct Answer
(D) bandwidth efficiency