Question

Array gain of an antenna is

• A. directly proportional to power radiated by isotropic antenna
• B. invesely proportional to power radiated by isotropic antenna
• C. directly proportional to power radiated by practical antenna
• D. inversely proportional to square of power radiated by practical antenna

Answer 1

The correct option is A directly proportional to power radiated by isotropic antenna

$G=10{\log }_{10}\left(\frac{P_0}{P_n}\right)dbs$

$G\propto P_0$ ($\to$ power radiated by isotropic antenna)

$G\propto \frac{1}{P_n}$ ($\to$ power radiated by practical antenna)