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	   "source": [
       "# Chapter 13: Antenna Measurement"
	   ]
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		   "source": [
			"## Example 13.4_1: Gains_of_Antennas.sce"
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"//Example No. 13.4.1\n",
"clc;\n",
"clear;\n",
"close;\n",
"format('v',7);\n",
"Pr1=0.0297/1000;//W(Recieved power)\n",
"Pr2=0.0471/1000;//W(Recieved power)\n",
"Pr3=0.0374/1000;//W(Recieved power)\n",
"Pt=1;//W(Transmitted power)\n",
"R=10;//m(Radius)\n",
"f=980;//MHz(Frequency)\n",
"f=f*10^6;//Hz(Frequency)\n",
"c=3*10^8;//m/s(Speed of light)\n",
"lambda=c/f;//m(Wavelength)\n",
"A=20*log10(4*%pi*R/lambda)+10*log10(Pr1/Pt);//(A=G1dB+G2dB)\n",
"B=20*log10(4*%pi*R/lambda)+10*log10(Pr2/Pt);//(B=G1dB+G3dB)\n",
"C=20*log10(4*%pi*R/lambda)+10*log10(Pr3/Pt);//(C=G2dB+G3dB)\n",
"G1dB=(A+B-C)/2;\n",
"G2dB=(A-B+C)/2;\n",
"G3dB=(-A+B+C)/2;\n",
"disp(round(G3dB),round(G2dB),round(G1dB),'Gain of antennas, G1db, G2dB & G3dB(in dB) are :  ');"
   ]
   }
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