Comparison(Phased arrays)...your point of view required

Hi friends

I need some very accurate and practical comparisons of

Dipole constituted phased arrays

OVER

Loop antenna ,Folded Dipole Antenna constituted phased arrays.

we normally use half wave dipole antenna arrays......why dont other not much in practice?

Plz reply details or upload a document purely on performance comparison.

Best regards

oh, i think the dipole is more simpe, but when we use multiple beam antenna arrary, we use the Log antenna, depend on your application

I have seen an phased array composed of folded dipoles in a paper in IEEE transaction.