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DuisburgEssen University Faculty of Engineering Department of Electrical Engineering and Informa;on Technology Ins;tute of Microwave and RF Technology

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Page 1: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

       

Duisburg-­‐Essen  University  Faculty  of  Engineering  

Department  of  Electrical  Engineering    and  Informa;on  Technology  

Ins;tute  of  Microwave  and  RF  Technology      

   

Page 2: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

       

 300  MHz  IQ-­‐Demodulator  for  7-­‐Tesla  MRI  Smart  Amplifier  

 Presendted  by:  Khalid  Zain  Elabdin  

Supervised  by:  Prof.  Dr.-­‐Ing.  Klaus  Solbach      

   

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Page 3: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

IntroducLon      

l  Task  assignment  

l  7-­‐Tesla  MRI    

l  I/Q-­‐demodulator  

l  Circuit  design  

l  Test  and  results  

l  Conclusion  

 

 

   

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Page 4: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Assignment  

to  design  a  printed  circuit  for  the  I/Q-­‐demodulator  using  the  ICs  and  other  surface-­‐mount  device  (SMD)  components  and  using  microstrip  line  on  a  dielectric  laminate  as  the  printed  circuit  technology  and  using  SubMiniature  version  A  SMA  coaxial  connectors  for  

signal  input  and  output.    

   

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Page 5: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

7-­‐Tesla  MRI    

 

   

   

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Page 6: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

The  System    

   

   

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Page 7: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

I  Q  Demodulator    

   

§ HMC597LP4  Ø HIGH  LINEARITY  Ø Low  noise  figure    

 

   

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Page 8: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

AD8132    

 

§ AD8132  DifferenLal  amplifier  Ø Low  cost  –  High  speed    Ø Internal  common-­‐mode  feedback    

 

   

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Page 9: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Final  SchemaLc  Design  

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Page 10: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Layout  Design  

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Page 11: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Printed  Circuit  Board    

   

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Page 12: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

   

 Test    

 Measurement              and  Results    

     

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Page 13: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Input  Matching  

 

 

   

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Page 14: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Measurment  Setup  

 

 

   

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Page 15: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Common  Mode  RejecLon  RaLo  

   

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Page 16: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Output  Power  RF    

 

 

   

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Page 17: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

RF  Gain  Measurment    

 

 

   

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Page 18: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Output  Power  LO    

   

   

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Page 19: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

LO  Gain  measurment  

 

 

   

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Page 20: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Quadrature  Accuracy  

 

                                         ∆ø=86.4°                              

   

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Page 21: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Baseband  Bandwidth    

 

 

   

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Page 22: DuisburgEssenUniversity! Faculty!of!Engineering ......DuisburgEssenUniversity! Faculty!of!Engineering! DepartmentofElectricalEngineering andInformaonTechnology! Ins;tute!of!Microwave!and!RFTechnology!

Conclusion      

Ø  An I Q Demodulator was designed for the 7 tesla Ø  The layout was designed by eagle Ø  The RF gain -11.3 dBm Ø  The baseband bandwidth 17 MHz Ø  The 1 dB compression point 12.3 dBm

     

 

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