h d 



10 - -b 100 



-50 

 -4.0 



-30 

 -20 



= — 10 



:F-5 



-4 

 -^2 



,i 



BELOW THE INTERFERENCE REGION 



105 



h'd' 

 10 =fe 100 



lj-50 

 "m^40 



30 

 =-20 



= ^10 



2— i- 



1^5 

 i-4 



-2 



.4^ 



:.5 



-.4 

 -.2 



20 1og/'3hN^/3 



k 

 r-l 



-4/3 



—2 



5-H 



5-4- 

 ^5 



10 — 



— 10 



—20 



^30 



20- 



^40 

 ^50 



25 — — 100 



30- 



-.05 



•2 J^ .04 



= ^.03 



-.02 



.1—1^.01 



Figure 43. Relation of h,d to h',d' as a function of fc. 



35- 



-200 



=-300 



E-400 

 ^500 



1000 



