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Arrays of point sources. n Elements Uniform Linear Arrays of point sources. Geometric series. CASE 1 :- n Elements Uniform Linear Arrays of point sources – BROADSIDE ARRARY . For example Let /2 ; . = 60 or 120. For example Let /2 ; . Then . if m=1.
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n Elements Uniform Linear Arrays of point sources Geometric series
CASE 1:- n Elements Uniform Linear Arrays of point sources – BROADSIDE ARRARY
For example Let /2 ; = 60 or 120
For example Let /2 ; Then if m=1
Thus +41.4 , -41.4 are the 4 minor lobe maxima of the array of 4 Isotropic sources, in phase, spaced /2 apart.
CASE 2:- n Elements Uniform Linear Arrays of point sources – END-FIRE ARRAY Same Equation of Normalize resultant Field Pattern For an array to be end fire, the phase angles is such that makes the maximum radiation in the of array i.e. Thus for an array to be and or 180
For example if n=4, d=/2, Thus +75.5 & -75.5 are the 4 minor lobe maxima of the array of 4 Isotropic sources, 180 deg out of phase, spaced /2 apart.
NOTE:- Here the complementary angle , as has been used in broadside case, is not required. Because the beam width of a end fire array is larger than broadside.
