— ARRANGEMENT OF ARRAY — 



— EQUATION OF DIAGRAM 

 SIN (nttA sin 0) 



N SIN(irA SIN t] 



COS ^ (cos 0-1) 



S = RATIO OF AREA OF UNIT CIRCLE TO THAT OF DIRECTIONAL DIAGRAM 

 R = RATIO OF AREA OF SUBORDINATE LOOPS TO THAT OF MAIN LOOP 





TRANSMISSION 



Fig. S — Horizontal plane diagrams — number of couplets 



separation in wave-lengths. 



