RADIATION CHARACTERISTICS OF AN ANTENNA. 



207 



4:A 



(36) 



If now we expand in series the quantities involving A in (36) and sub- 

 stitute in (35), we obtain, if 



k = 2.4 

 q = 2G 



(37) 



p = 



2/2 



COS'' 



cir 



+ 

 + 



COS 



I X 



ii 



(Ct — To) 



r 



+ 



1 j _ F 



_4 ^ 3! 

 M 2P_ 

 2!2 



2 M 



5! 



71 

 2A;« 



+ 



2k^ 



4!4 "^ 6!6 



4 I 

 sin 9 j 



k 



2! ^4! 6! ^ 



_ ^ 4. i' _ ^' j_ 

 3! 5! 7! 



1 - 



+ 



COS q j 



sin g j 2k 



T~ I 21 



_ cosq j (^ _ {2ky 



4 \ 2!2 4!4 "^ 



cos q j Z:^ ^"^ 



{2ky ^ (2ky ^ 



3! 



4! 



+ 



+ 



2 I 2!2 

 sin 9 



4!4 



+ 



sin q j 



2k - 



k - 



3!3 



^ + 



3!3 



5! 



{2ky 



6! 

 (2^ 

 6!6 



6!6 



mi 



5! 5 

 5!5 



\ 



(38) 



