What is the ratio of output to input called?
An average measure of the efficiency of production is called productivity. It is expressed as the ratio of output to inputs used in the process of production i.e output per unit of input typically over a specific period of time..
What is ratio of electric power output to the radiation power input called as?
Energy conversion efficiency (η) is the ratio between the useful output of an energy conversion machine and the input, in energy terms. The input, as well as the useful output may be chemical, electric power, mechanical work, light (radiation), or heat.
What is the total radiated power per unit area?
The radiated power per unit area is the Planck energy density multiplied by c/4. It can be approximated numerically by taking a sum of values of the Planck radiation density times a wavelength interval. The result of dividing the wavelength interval into 100 steps is as follows.
How does the power radiated by an antenna vary with wavelength?
Communication Systems. How does the effective power radiated by an antenna vary with wavelength? Effective power radiated by an antenna is inversely proportional to the square of the wavelength. Height of receiving antenna should be LOS of transmitting antenna.
What is the ratio of the power radiated by the antenna to the total input power?
Explanation: Radiation efficiency is defined as the ratio of power radiated to the total input power to the antenna. Total input power is the sum of the radiated power Pr and the ohmic losses Pl. 4.
How is total radiated power calculated?
Total Radiated Power is measured on an antenna test range, most often an anechoic chamber. The transmitter is excited in some fashion, outputting power to the antenna. The antenna then radiates this power.
What is the maximum power gain of antenna?
2. Directive Gain (Gd): It is the ratio of radiation intensity in a particular direction to the average radiated power. Gd does not depend upon the power input to the antenna & its ohmic losses. The maximum value of directive gain is the directivity D of the antenna.
How do you calculate effective radiated power?
ERP measures the combination of the power emitted by the transmitter and the ability of the antenna to direct that power in a given direction. It is equal to the input power to the antenna multiplied by the gain of the antenna.