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(Answered)-1. For an antenna radiation efficiency of 0.8, evaluate the Gain


please kindly help me with this question.

  • At?VLF?ranges,?it?is??practically?not?possible?to?transmit?horizontally?polarized?waves.?Give??reasons.
  • and one question attached.?

1. For an antenna radiation efficiency of 0.8, evaluate the Gain of an antenna with the

 

normalized radiation intensity:

 


 

{

 


 

?

 

cos

 

?;

 

0<

 

?<

 

; 0<? < ?

 

U ( ? ,? )=

 

2

 

0, everywhere else

 


 

2. It is found that the attenuation on a 50 ohms distortion-less transmission line is 0.01 (dB/m).

 

The line has a capacitance of 0.1 (pF/m).

 

a. Find the resistance, inductance, and conductance per meter of the line

 

b. Find the velocity of wave propagation

 

Determine the percentage to which the amplitude of a voltage traveling wave decreases in 1 km and in

 

5km

 


 

 


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DATE ANSWERED

Oct 07, 2020

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