A loop antenna, supplemented with a variable capacitor to tune into resonance with the received signal, converts the energy of an electromagnetic wave into signal voltage much more efficiently, that is, its effective length is much more than that of an ordinary loop antenna. Here, in the third part, the determining of how much more […]

In the first part, the definition of the effective length of the receiving antenna in general was given, the relationship between the electric and magnetic fields induced by the electromagnetic wave at the receiving point was shown, and an expression was obtained for calculating the effective length of the loop antenna, consisting of one turn […]

How to compare the efficiency of different receiving antennas? When comparing electric receiving antennas with each other the effective length of an antenna is used as a coefficient of ratio between the voltage induced on the open-circuited terminals of the antenna and the power of the electromagnetic wave at the receiving point. And note that […]