The power density of a directional antenna at a distance of 20 km from the antenna is 0.5 mW/m². Calculate the directivity of the antenna
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The power density of a directional antenna at a distance of 20 km from the antenna is 0.5 mW/m². Calculate the directivity of the antenna
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- A transmitting antenna with an effective height of 10 m has 50 A current at the base. If the frequency of transmission is 600 MHz, then find out the transmitted power.An antenna transmits a power of 2W from an antenna of 20db , towards a receiver located 40 km from the receiver , calculate the power received by an antenna of effective antenna 10 m^2 if the operating frequency is 11 KHzA parabolic reflector antenna has a diameter of 2.7 m. The antenna operates at 700 MHz. Calculate the directivity of the antenna?
- An antenna whose radiation resistance is 100 Ω operates at a frequency of 2.4 GHz and with a current of 1 A. Calculate the radiated power.The total power delivered to the radiator of an isotropic antenna is 200,000 W. Determine the power density at a distance of 100 m.Calculate the electric field strength at a distance of 100 km away from an antenna which is radiating 10 kW of power.
- 2.) A short vertical transmitting antenna erected on the surface of a perfectly conducting earth produce an rms field strength E = 100 sine mV/m at a distance of 0.5 km from the antenna. Determine the total radiated power by the antenna.For a transmitting horn antenna, find out the electric field strength 60 km away from the transmitting station of 35 kW power.Find out the available power per unit area at a point which is 1 km away from a transmitting antenna that is transmitting 2.3 W of power and has a gain of 100.
- Calculate the electric field strength at 100 km away from an antenna which is transmitting 10 kW of power.Calculate the front to back ratio of an antenna which radiates 3 kW in the most desired direction and 0.5 kW in the opposite direction .At a distance of 10 m from a transmitting antenna, the maximum radiated power is measured as 160 microW/cm2. If the transmitting antenna is radiating 120 W power, then determine the gain of the transmitting antenna.