Patent ID: 11936108
Assignee: ROHDE & SCHWARZ GMBH & CO. KG
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 16:
17. An RCS reduction surface for reducing a radar cross section of an object, said RCS reduction surface comprising:
at least one absorber portion, said absorber portion being configured to absorb radar waves; and
at least one reflecting portion, said reflecting portion being configured to reflect radar waves,
wherein a first plane being associated with a top surface of said absorber portion and a second plane being associated with a top surface of said reflecting portion are spaced from each other by a predefined distance, and
wherein said predefined distance is configured such that radar waves with a predefined wavelength range that are reflected at said absorber portion and at said reflecting portion interfere destructively with each other, wherein said predefined distance is dependent on a wavelength of said radar waves, wherein said predefined distance is approximately equal to, 2
      ⁢
      n
     
     +
     1
    
    4
   
   ⁢
   
    λ
    0
   
  
  ,
 

 or approximately equal to, 2
      ⁢
      n
     
     +
     1
    
    4
   
   ⁢
   
    
     λ
     0
    
    ·
    
     cos
     ⁡
     (
     θ
     )
    
   
  
  ,
 

 wherein λ0 is the wavelength of said radar waves in air, wherein θ is a predefined incident angle, and wherein n is an integer bigger than or equal to zero.