Antenna arrays are used to increase the gain of the antenna. They also increase directivity and reduce beamwidth.
Antennas operate in HF, VHF and UHF spectrum (3 MHz – 1 GHz). Above 1 GHz is the microwave range.
It is observed that in recent years a good number of problems have appeared in GATE examination.
Problems of 1 mark and 2 mark are put in two groups. An elaborate and simple solution to each problem is given.
Some typical and recent GATE problems will be considered for video solutions.