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BELL SYSTEM TECHNICAL JOURNAL 



the corner reflector would remain the same size, whereas the cyUnder and 

 the sphere would have to be larger in order to maintain the same effective 

 areas. At a wavelength of 1 centimeter the sphere would have to have a 

 radius of about 60 feet. 



S^ 10 



40 -30 -20 -10 10 20 30 

 ANGLE, 0, IN DEGREES 



Fig. 17 — Properties of the biconical comer reflector. 



BicoNiCAL Corner Reflector 



A reflector, combining the 360° horizontal response characteristic of the 

 cylinder with a vertical response like that of the corner reflector, was evolved 

 and is illustrated in Fig. 17. As shown here, the device consists of two coni- 

 cal surfaces placed in juxtaposition such that the generatrices of one cone 

 intersect those of the other at right angles. The operation of the reflector is 

 somewhat like that of a dihedral corner reflector in that a ray, upon striking 

 one of the cones, is reflected to the other and then returns in the direction of 



