Patent ID: 11901625
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. The antenna apparatus of claim 1, wherein a difference ϕR between a reflection phase of the resonant structure to the RF signal of the preset frequency band and an incident phase of the resonant structure to the RF signal of the preset frequency band satisfies:, ϕ
      ⁢
      R
    
    =
    
      
        
          
            4
            ⁢
            
              π
              ⁢
              h
            
          
          c
        
        ⁢
        f
      
      -
      
        
          (
          
            
              2
              ⁢
              N
            
            -
            1
          
          )
        
        ⁢
        π
      
    
  
  ;

wherein h represents the length of a center line from a radiation surface of the antenna module to a surface of the resonant structure facing the antenna module, c represents the speed of light, and f represents a frequency of the RF signal, the center line being a straight line perpendicular to the radiation surface of the antenna module.