Question
Download Solution PDFWhich of the following is a measure of the antenna’s radiated power in a given direction?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- Gain of an antenna is the ratio of the radiation intensity in a given direction to the radiation intensity that would be obtained if the power were radiated isotropically.
- The gain of an antenna takes the directivity into account.
- The term antenna gain describes how much power is transmitted in the direction of peak radiation to that of an isotropic source.
Mathematically, the gain is defined as:
G = ηeD
ηe = Antennas efficiency
D = Directivity of the antenna
Directivity: The ratio of the radiation intensity in a given direction from an antenna to the radiation intensity averaged over all directions is termed as directivity.
Antenna's Efficiency: Antenna's Efficiency is the ratio of the radiated power of the antenna to the input power accepted by the antenna.
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