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If radiation resistance is 200 Ω and operating with 6 A of current at 4 GHz frequency, then what is the power radiated by an antenna?
The gain of antenna (G) is the ratio of power radiated in a particular direction to the power radiated from an isotropic antenna.
In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as
If the radiation resistance of a Hertzian dipole is 100Ω, then the radiation resistance of short dipole is ____Ω.
If the power input to an antenna is 100 mW and if the radiated power is measured to be 90 mW, then the efficiency of the antenna is:
The radiation resistance dissipates same amount of power as it radiated by the antenna.
Consider a lossless antenna with a directive gain of +6 decibel. If 1 milliwatt of power is fed to it, the total power radiated by the antenna will be (in milliwatt)
The radiation resistance of an antenna having a power of 120 units and antenna current of 5A is
Radiation resistance doesn’t depend on direction of power radiated but depends on the frequency.
“What is the different between height and radius of solid cylinder?” Which of the following option is sufficient alone to find the answer? A) A solid cylinder is made by melting a solid sphere. The radius of cylinder is 3 times the radius of a circle whose area is 154 sq.m. Height of cylinder is equal to the height of cone whose volume is 2772 cubic meters. B) Area of a rectangle whose longer side is ¾ times the radius of a solid cylinder, is 168 sq.m and, Volume of solid cylinder is 2772 cubic meters and its height is 18 m. C) A metallic cone of radius 15m and height 35m is melted into the solid cylinder of radius equal to the radius of a circle whose area is equal to the area of rectangle whose sides are in the ratio 4 : 3 respectively. D) The curved surface area of the solid cylinder is 3 time the surface area of a sphere of radius 7m and height of cylinder is equal to the height of a metallic cone whose curved surface area is 308 sq.m.