Antenna Theory - FAQ's With Answers - 1.
This page contains basic questions and short notes on some of the keywords on antenna theory: 1) Define an antenna? Antenna is a transition device or a transducer between a guided wave and a free space wave or vice-versa. Antenna is also said to be an impedance transforming device. 2) What is meant by radiation pattern? Radiation pattern is the relative distribution of radiated power as a function of distance in space .It is a graph which shows the variation in actual field strength of the EM wave at all points which are at equal distance from the antenna. The energy radiated in a particular direction by an antenna is measured in terms of FIELD STRENGTH. (E Volts/m) 3) Define Radiation intensity? The power radiated from an antenna per unit solid angle is called the radiation intensity U (watts per steradian or per square degree). The radiation intensity is independent of distance. 4) Define Beam efficiency? The total beam area (WA) consists of the main beam area (...