Q3 (a) (b) (d) A Hertzian dipole of X/100 length is located at the origin and fed with a current of 0.25 sin 10³t A. Det

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Q3 A B D A Hertzian Dipole Of X 100 Length Is Located At The Origin And Fed With A Current Of 0 25 Sin 10 T A Det 1 (159.59 KiB) Viewed 45 times

Q3 (a) (b) (d) A Hertzian dipole of X/100 length is located at the origin and fed with a current of 0.25 sin 10³t A. Determine the Eg and Ho at far field region for R=N/5 and 0 = 30°. (5 marks) A centre-fed dipole with a length of 1 m operates in the FM broadcast band at 150 MHz. The dipole is made of copper wite with a radius of I min Determine (i) (ii) the antenna gain in dB, the antenna current required for the antenna to radiate 80 W, and the power the generator has to supply to the antenna. Discuss the characteristics of Hertzian dipole and halfwave dipole. (8 marks) (6 marks) An antenna operating at 100 MHz radiates a total power of 80 dBm so that a maximum radiated electric field strength of 12 mV/m is measured 20 km from the antenna. This antenna is to achieve 98% efficiency. Is this a practical antenna? (6 marks)