Patent ID: 11962088
Assignee: ANHUI UNIVERSITY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. The dual-mode OAM convergence metasurface preparation method according to claim 9, wherein the conducting fine-tuning based on the first rough phase value until a first precise phase value is reached is conducted according to the following formula:, ϕ
   ith
   a
  
  =
  
   {
   
    
     
      
       
        0
        ⁢
        °
       
       ,
       
        
         337.5
         °
        
        <
        
         ϕ
         
          i
          ⁢
          t
          ⁢
          h
         
        
        ≤
        
         360
         ⁢
         °
        
       
       ,
       
        
         0
         ⁢
         °
        
        <
        
         ϕ
         
          i
          ⁢
          t
          ⁢
          h
         
        
        ≤
        
         22.5
         °
        
       
      
     
    
    
     
      
       
        45
        ⁢
        °
       
       ,
       
        
         22.5
         °
        
        <
        
         ϕ
         
          i
          ⁢
          t
          ⁢
          h
         
        
        ≤
        
         67.5
         °
        
       
      
     
    
    
     
      
       
        90
        ⁢
        °
       
       ,
       
        
         67.5
         °
        
        <
        
         ϕ
         
          i
          ⁢
          t
          ⁢
          h
         
        
        ≤
        
         112.5
         °
        
       
      
     
    
    
     
      ⋮
     
    
    
     
      
       
        315
        ⁢
        °
       
       ,
       
        
         292.5
         °
        
        <
        
         ϕ
         
          i
          ⁢
          t
          ⁢
          h
         
        
        ≤
        
         337.5
         °
        
       
      
     
    
   
  
 

wherein ϕith denotes the first rough phase value, and ϕitha denotes the first precise phase value.