Module 7 : Antenna
Lecture 51 : Antenna Arrays
   Recap
   In this course you have learnt the following
What is an antenna array?
Why antenna arrays are required?
Uniform linear array.
End fire and broadside array.
Direction main beam, directions of nulls and sidelobes.
Amplitudes of side lobes.
Half Power Beam Width (HPBW).
Directivity of a uniform array.
Grating lobe and condition for avoiding grating lobe.