00:01
So here firstly in this part we are considering about the antenna array.
00:05
So what basically antenna array is? so an antenna array is a group of antennas.
00:13
So it is a group of antennas which are connected and arranged in a regular structure.
00:25
So they are connected and arranged in a regular structure to form a single antenna.
00:36
So this is what basically an antenna array is.
00:42
Now that is able to produce radiation pattern not produced by the individual antennas.
00:49
So an antenna array is used to increase the overall gain and we can say that they provide diversity reception, cancel out interferences, maneuver the array in a particular direction, gives the direction of arrival of the incoming signal and to maximize the signal to interference plus noise ratio.
01:14
So an antenna array can achieve higher gain, higher gain directively that is a narrower beam of a radio wave that could be achieved by a single antenna.
01:26
So in general the larger the, larger the number of individual antennas, so larger the number of the individual antennas, so larger the antennas, higher the gain and higher the gain and narrower the beam.
01:56
So this is basically what an array antenna is or we can say that some antenna array are composed of the thresholds of the individual antennas.
02:07
Array can be used to achieve higher gain to give the path diversity which increase the communication reliability, to cancel interference from specific direction, to steer the radio beam electronically, to point the difference direction and for a radio direction finding.
02:23
So this is antenna array.
02:25
Now we are considering about the different, difference between the driven and the parasitic element in an array antenna.
02:40
So what basically are driven elements? so as we know that antennas radiate individually and while in array the radiation of all the elements sum up to form a beam radiation...