Modified Elliott's technique for sector beam synthesis

Abstract

ain s t a r t i n g p a t t e r n . A u n i f o r m a p e r t u r e e x c i t a t i o n r e s u l t i n g a n a r r o w beam w i th 13 dB f i r s t s i d e l o b e l e v e l , e t c . was t a k e n o n s t a r t i n g p a t t e r n a n d o f p e n c i l beam w i t h a r b i t r a r y s i d e l o b e c o n f i g u r a t i o n , b o t h s y m m e t r i c a s E e l 1 a s a s y m m e t r i c s i d e l o b e , was r e a l i s ad. E l l i o t t f 2 3 a l s o g e n e r a t e d n a r r o w beam w i t h asymmet r ic s ide lobes , whose peaks f i t a p r e s c r i b e d enve lope [ i n h i s c s c 2 p a t t e r n 2 s u b s e q u e n t l y some of t h e z e r o s o n t h e u n i t c i r c l e were s h i f t e d r a d i a l l y o u t w a r d o r i n w a r d t o o b t a i n n u l l f i l l i n g a n d a reaso n a b l y s h a p e d p a t t e r n was ob ta ined .