Patent ID: 11906558
Assignee: INNOWIRELESS CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. The method of claim 1, wherein h[n]′, which is a coefficient of the RBW filter, is determined by h[n]′=h[n]*w[n]′,
the RBW filter is configured based on a window function of, w
    [
    n
    ]
   
   =
   
    
     a
     0
    
    -
    
     
      a
      1
     
     ⁢
     
      cos
      ⁡
      (
      
       
        2
        ⁢
        π
        ⁢
        n
       
       N
      
      )
     
    
    +
    
     
      a
      2
     
     ⁢
     
      cos
      ⁡
      (
      
       
        4
        ⁢
        π
        ⁢
        n
       
       N
      
      )
     
    
    -
    
     
      a
      3
     
     ⁢
     
      cos
      ⁡
      (
      
       
        6
        ⁢
        π
        ⁢
        n
       
       N
      
      )
     
    
   
  
  ,, where a0=0.3635819, a1=0.4891775, a2=0.1365995, and a3=0.0106411,
a final window function is determined by w[n]′=w[n]α, where α is a constant for obtaining a bandwidth of the RBW filter,
H[n], which is a frequency domain value of the RBW filter, and a length of the filter are determined by a RBW sampling rate and the RBW, and
h[n], which is a time domain value, is obtained through inverse fast Fourier transform (IFFT).