Patent ID: 11883148
Assignee: REGENTS OF THE UNIVERSITY OF MINNESOTA
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 4:
5. The coil system of claim 1 wherein a quantitative relationship between all capacitances and inductances in the coil system under unloaded conditions, where the induced reactance is zero, is given by:, 1
     
      
       1
       
        
         1
         
          
           1
           
            
             ω
             0
            
            ⁢
            
             L
             2
            
           
          
          -
          
           
            ω
            0
           
           ⁢
           
            C
            4
           
          
         
        
        +
        
         
          ω
          0
         
         ⁢
         
          L
          1
         
        
       
      
      -
      
       
        ω
        0
       
       ⁢
       
        C
        L
       
      
     
    
    -
    
     1
     
      
       ω
       0
      
      ⁢
      
       C
       5
      
     
    
    -
    
     1
     
      
       ω
       0
      
      ⁢
      
       C
       S
      
     
    
   
   =
   0
  
  ;
 

wherein ω0 represents each of the multiple resonant frequencies of the coil, CS is a capacitance of a matching capacitor, CL is a capacitance of a tuning capacitor, L1 is inductance of the two conductive legs, L2 is inductance of the conductive loop, and C4 is a capacitance connected to the two conductive legs and the RF resonant antenna.