2. 1-Find the HPBW of an antenna has a radiation intensity of the form:
U A0 sin 0 , 0 2
Solution:
A sin A
sin 1 max 90
1
A sin A
2
1
sin
1/2 30
2
HPBW 2 max 1/ 2
HPBW 2 90 30
HPBW 120
2- The normalized radiation intensity of an antenna is given by:
U sin sin 2 0 , 0 2
Find the
HPBW in azimuth and elevation planes
Solution:
1)Azimuth 90
U sin 2
sin 2 1 sin 1 max 90
sin 2 1/ 2 1 1/ 2 sin 0.707 1/2 45
HPBW 2 max 1/ 2
HPBW 2 90 45 90
3. 2)Elevation 90
U sin
sin 1 max 90
sin 1/ 2 1/2 30
HPBW 2 90 30 120
3- The normalized radiation intensity of an antenna is given by:
U sin 2 sin 2 0 , 0 2
Find the HPBW in azimuth and elevation planes
Solution:
1)Azimuth 90
U sin 2
sin 2 1 sin 1 max 90
sin 2 1/ 2 sin 1/ 2 1/ 2 45
HPBW 2 90 45 90
2)Elevation 90
U sin 2
sin 2 1 sin 1 max 90
sin 2 1/ 2 sin 1 / 2 1/ 2 45
HPBW 2 90 45 90