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Calculate the attenuation loss and total losses

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Reference no: EM13263284

1. If in an isotropic mobile transmitting station, the power that it radiates is 100 Watt at 1.0GHz in free space, calculate the following
a) the power density of Electromagnetic wave at 10m away from the source.
b) The electrical field at 10 m away in free air space?

2. What is reduction of signal power for a person at 20 m away
a) holding the same mobile type of mobile phone
b) Holding the mobile phone that has double antenna gain AP

3. If the EM wave of 10 kW transmitted is hitting a truly reflecting building at 20o and 5m from normal, the coefficient of reflection is r=0.5, at which location the reflected ray is max and its power density at 5m in that direction?

4. If the EM wave is traveling from free air space (n1=1) to ionosphere D and the angle of incidence is 30degree but angle of refraction in second medium is 20degree, what is the speed of EM wave at ionosphere D?

5. What is polarization of EM wave when the antenna is arranged vertically? Do you think horizontal antenna can receive the signal sent by a vertical antenna? Why

6. If a person (A) stands at 10 km and another person (B) stands at 20km away from the source, what is the attenuation ratio in decibel (db) for the power received between second person (B) to first person (A) transmitted by an isotropic source.

7. Calculate the total loss in signal power of an isotropic source that transmitted a 10 kW signal if the attenuation caused 20 db drop and
polarization caused 10 db drop, absorption caused 6 db drop and reflection caused 4db drop.

8) A TV station radiated a TV signal at 10mW uniformly, the receiver is located at 2km away from the station. The TV antenna has gain of 28db against isotropic receiver. The absorption & reflection& etc (fade) losses is -38db to ensure 99.99% reliability. Your TV carrier signal is 600MHz.

a). Calculate the attenuation loss and total losses, what will be the power in dbm at the receiver?

b). Do you think a typical TV of 20db NF and IF of Bandwidth (B) of 5MHz can have a good picture?

Reference no: EM13263284

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