Deemed University 2009 A.M.I.E.T.E Electronics & Communication Engineering Satellite & space communication – et (old scheme) - Question Paper

AMIETE – ET (OLD SCHEME)

Code: AE22 Subject: SATELLITE & SPACE COMMUNICATION
Time: three Hours Max. Marks: 100

NOTE: There are nine ques. in all.
· ques. one is compulsory and carries 20 marks. ans to Q. 1. must be written in the space given for it in the ans book supplied and nowhere else.
· Out of the remaining 8 ques. ans any 5 ques.. every ques. carries 16 marks.
· Any needed data not explicitly given, may be suitably presumed and said.


Q.1 select the accurate or the best option in the following: (210)

a. An era of expansion for telecommunication satellites was marked in

(A) the late 1930s. (B) the late 1970s.
(C) the late 1980s. (D) the late 1960s.

b. If an earth station is in the Northern Hemisphere with satellite to the SE of the earth station, then the azimuth look angle can be obtained from

(A) . (B) .
(C) . (D) with usual notations.

c. For a nominal geostationary orbit, the requirement on the central angle for the satellite to be visible is that be

(A) . (B) .
(C) . (D) .

d. The width of the ionosphere above the troposphere is typically

(A) 200 Km. (B) 310 Km.
(C) 400 Km. (D) 500 Km.

e. If the EIRP for a satellite downlink at 12 GHz is 56 dBW and the antenna gain is 48.2 dB, then the operating transmit power of the link is

(A) 3.5 W. (B) six W.
(C) 8.23 W. (D) 2.192 W.

f. A system sends digital data with a baseband bandwidth of 4.8 KHz using analog FM and the resulting RF signal bandwidth is 16.8 KHz. If the CNR for the signal from the satellite is 10dB, then for a peak frequency deviation of 3.6KHz, the SNR of the baseband waveform for the FM receiver is

Earning:   Approval pending.