(a) What is a Hertzian dipole? You may draw a diagram to illustrate your answer. (b)...

 

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(a) What is a Hertzian dipole? You may draw a diagram to illustrate your answer. (b) For a dipole, the power density of a radiated field is given by nß² sin² a,. Sketch the approximate shape for 1² 1² S =- 327²7-2 the radiated power pattern in the x-z plane. (c) A magnetic field strength of H=5μA / m is required at a point which is r= 2Km from an antenna in air. If the on 8 = 2 antenna is a half-wave dipole (length =), calculate the power the antenna must transmit. Given the radiation resistance, Rad =7392, use the given formulas and neglect ohmic loss. 95 I, cos cos 2πr sin and Prad = R (2 marks) (3 marks) (5 marks) (a) What is a Hertzian dipole? You may draw a diagram to illustrate your answer. (b) For a dipole, the power density of a radiated field is given by nß² sin² a,. Sketch the approximate shape for 1² 1² S =- 327²7-2 the radiated power pattern in the x-z plane. (c) A magnetic field strength of H=5μA / m is required at a point which is r= 2Km from an antenna in air. If the on 8 = 2 antenna is a half-wave dipole (length =), calculate the power the antenna must transmit. Given the radiation resistance, Rad =7392, use the given formulas and neglect ohmic loss. 95 I, cos cos 2πr sin and Prad = R (2 marks) (3 marks) (5 marks)

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a Hertzian dipole It is a theoretical construct antenna It is just like small dipole is shrin... View the full answer