Antennas more complex than the dipole or vertical designs are usually intended to increase the directivity and consequently the gain of the antenna.
32.
Directivity is also defined for an antenna receiving electromagnetic waves, and its directivity when receiving is equal to its directivity when transmitting.
33.
Directivity is also defined for an antenna receiving electromagnetic waves, and its directivity when receiving is equal to its directivity when transmitting.
34.
Directivity is also defined for an antenna receiving electromagnetic waves, and its directivity when receiving is equal to its directivity when transmitting.
35.
It is a compromise between the properties of the Bethe-hole and Schwinger couplers with both coupling and directivity varying with frequency.
36.
A well designed spiral array could have an almost constant directivity pattern with frequency, with some small lobes exhibited at low frequencies.
37.
An array antenna is a set of multiple identical gain ( directivity ), more of the power radiated in a specific direction.
38.
Directive gain or directivity is a different measure which does " not " take an antenna's electrical efficiency into account.
39.
The directivity is therefore the maximum directive gain when taken over all directions, and is always " at least " 1.
40.
Neglecting electrical inefficiency, the antenna gain is equal to the array of dipoles ) can be considered when more substantial directivity is desired.
