Patent ID: 11879924
Assignee: KEYSIGHT TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. The method of claim 8, wherein deriving the EIRP of the AUT at a far-field distance (df) comprises solving for EIRP(df) as follows:, EIRP
      ⁡
      (
      
       d
       f
      
      )
     
     =
     
      
       EIRP
       ⁡
       (
       
        d
        1
       
       )
      
      +
      
       
        ∫
        
         d
         1
        
        
         d
         f
        
       
       
        
         
          ∂
          p
         
         
          ∂
          d
         
        
        ⁢
        d
        ⁢
        Δ
        ⁢
        d
       
      
     
    
   
   
    
     Equation
     ⁢
        
     
      (
      1
      )
     
    
   
  
 

wherein EIRP(d1) is measured EIRP at a first near-field distance (d1) of a plurality of near-field distances, d is the plurality of near-field distances, dΔd is differentiation of the distance distances d, and, ∂
   p
  
  
   ∂
   d, is a derivation of power to distance, determined as follows:, ∂
       p
      
      
       ∂
       d
      
     
     =
     
      
       a
       ⁢
       
        d
        
         -
         2
        
       
      
      +
      
       Δ
       ⁡
       (
       d
       )
      
     
    
   
   
    
     Equation
     ⁢
        
     
      (
      2
      )
     
    
   
  
 

wherein a is a coefficient of expansion to be determined, and Δ(d) is redundant term of, ∂
   p
  
  
   ∂
   d, which consist of terms lower order than d−2, wherein Δ(d) is ignored.